Hallo zusammen,

ich habe bei meinem Thinkpad E495 ein komisches Problem. Im Bios werden mir 8GB ram angezeigt. Jedoch erkennt das System nur 6GB von 8GB RAM.

Im Bios hab ich auch schon einen Memory Test drüber laufen lassen (jedoch nur den Schnelltest) und der hat mir keine Fehler gezeigt.

Kann es sein dass die Hardware einfach noch zu neu ist und darum nicht der komplette RAM erkannt wird? Verbaut ist folgende Hardware:
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 PCIe GPP Bridge [6:0]
00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 PCIe GPP Bridge [6:0]
00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 PCIe GPP Bridge [6:0]
00:01.6 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 PCIe GPP Bridge [6:0]
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Internal PCIe GPP Bridge 0 to Bus A
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 61)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 7
01:00.0 Non-Volatile memory controller: SK hynix Device 1327
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)
04:00.0 Network controller: Intel Corporation Wireless-AC 9260 (rev 29)
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Picasso (rev c2)
05:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio Controller
05:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor
05:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Raven USB 3.1
05:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Raven USB 3.1
05:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor
05:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller
Und das zeigt mir die meminfo:
MemTotal:        6041028 kB
MemFree:         4686304 kB
MemAvailable:    4979716 kB
Buffers:           30244 kB
Cached:           480772 kB
SwapCached:            0 kB
Active:           715104 kB
Inactive:         358540 kB
Active(anon):     563560 kB
Inactive(anon):    24116 kB
Active(file):     151544 kB
Inactive(file):   334424 kB
Unevictable:          80 kB
Mlocked:              80 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:               328 kB
Writeback:             0 kB
AnonPages:        562700 kB
Mapped:           318352 kB
Shmem:             25056 kB
KReclaimable:      40400 kB
Slab:             107760 kB
SReclaimable:      40400 kB
SUnreclaim:        67360 kB
KernelStack:        8580 kB
PageTables:        15492 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     3020512 kB
Committed_AS:    3628996 kB
VmallocTotal:   34359738367 kB
VmallocUsed:           0 kB
VmallocChunk:          0 kB
Percpu:             9024 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:               0 kB
DirectMap4k:      192572 kB
DirectMap2M:     3876864 kB
DirectMap1G:     2097152 kB
Der Grafikkarte ist der RAM jedenfalls nicht zugeteilt:
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Picasso (rev c2) (prog-if 00 [VGA controller])
	Subsystem: Lenovo Picasso
	Flags: bus master, fast devsel, latency 0, IRQ 50
	Memory at c0000000 (64-bit, prefetchable) [size=256M]
	Memory at d0000000 (64-bit, prefetchable) [size=2M]
	I/O ports at 1000 [size=256]
	Memory at d0500000 (32-bit, non-prefetchable) [size=512K]
	[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: amdgpu
	Kernel modules: amdgpu
Was mich zusätzlich ein wenig wundert. Eigentlich müsste eine Raden verbaut sein und keine Lenove Picasso (was auch immer das sein soll)

Grüße und danke im voraus für jegliche Antworten.
Wegen Picasso,
kannst du noch ein cat /proc/cpuinfo mit durchgeben?
Ich kann mir nicht vorstellen, dass die Grafikeinheit sich 2 GB abzwackt. Zumal bei deinem Ausdruck was von 256M steht.
Ein Ryzen2 System ist sicherlich nicht zu neu so dass ein Linux das nicht richtig erkennen soll.
Da müßte aber im Bios auch zu erkennen sein, wieviel Speicher für die Grafikeinheit zugewiesen sein soll.
Nachtrag:
Hier habe ich was gelesen, dass die APU sich Picasso nennt.
https://www.pcwelt.de/news/AMD-Ryzen-Alle-Prozessoren-samt-Testberichte-und-Ausblick-auf-2018-10337800.html#RyzenAPUVega
2.5 Ryzen APU mit integrierter Radeon-Vega-Grafik für Desktop und Notebook
Bereits Anfang 2019 sind Ryzen 3000-APU-Mobile-Chips (Codename: Picasso) mit integrierter Vega-Grafik für Notebooks erschienen , mit Zen+-Architektur und im 12-nm-Verfahren von Globalfoundries gefertigt, mit zwei bis vier Kernen und vier bis acht Threads sowie Taktraten von 2,1 bis 2,6 GHz. Im Turbomodus kommen die Spitzenmodelle Ryzen 7 3700U und 3750U auf bis zu 4 GHz.
Die Ryzen APU für Desktop-PCs ("Picasso", Zen+, 12 nm) sollen 2019 folgen. Laut Computerbase könnte AMD die neuen Ryzen-3000-Prozessoren mit APU auf der Computex 2019 zeigen, als Produktname werden Ryzen 5 3400G (4 Kerne, 8 Threads, 3,7 GHz Basistakt, Turboboost 4,2 GHz, 512 KB L2-Cache pro Kern, 4 MB L3-Cache) und Ryzen 3 3200G (4 Kerne, 4 Threads, Basistakt 3,6 GHz, Turboboost 4,0 GHz, kein Simultaneous Multithreading SMT) gehandelt. Auf der Computex hält AMD am 27.5.2019 eine Präsentation. Als Sockel für die Picasso-APUs kommt AM4 zum Einsatz.
Also im Bios hatte ich als erstes geschaut. In dem Bios des Laptops kann man jedoch nirgends den RAM der Graka zuordnen.

Das hier ist die CPU
processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 23
model		: 24
model name	: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx
stepping	: 1
microcode	: 0x8108102
cpu MHz		: 1315.499
cache size	: 512 KB
physical id	: 0
siblings	: 8
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pstate sme ssbd sev ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 xsaves clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov succor smca
bugs		: sysret_ss_attrs null_seg spectre_v1 spectre_v2 spec_store_bypass
bogomips	: 4194.19
TLB size	: 2560 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 43 bits physical, 48 bits virtual
power management: ts ttp tm hwpstate eff_freq_ro [13] [14]
Bezüglich Fehlermeldungen wird mir das hier beim dmesg ausgeworfen:
dmesg | grep err
[    0.026775] ACPI: IRQ0 used by override.
[    0.026776] ACPI: IRQ9 used by override.
[    0.732240] ACPI: EC: interrupt blocked
[    0.732471] ACPI: Using IOAPIC for interrupt routing
[    0.756720] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 7 10 11 12 14 15) *0
[    0.756786] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 7 10 11 12 14 15) *0
[    0.756834] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 7 10 11 12 14 15) *0
[    0.756897] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 7 10 11 12 14 15) *0
[    0.756955] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 7 10 11 12 14 15) *0
[    0.756998] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 7 10 11 12 14 15) *0
[    0.757041] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 7 10 11 12 14 15) *0
[    0.757084] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 7 10 11 12 14 15) *0
[    0.759107] ACPI: EC: interrupt unblocked
[    1.158144] AMD-Vi: Interrupt remapping enabled
[    1.166834] fbcon: Deferring console take-over
[   20.715637] acpi_cpufreq: overriding BIOS provided _PSD data
[   20.856747] tpm tpm0: tpm_try_transmit: send(): error -5
[   20.856749] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
[   21.083933] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
                Either enable ECC checking or force module loading by setting 'ecc_enable_override'.
                (Note that use of the override may cause unknown side effects.)
                Either enable ECC checking or force module loading by setting 'ecc_enable_override'.
                (Note that use of the override may cause unknown side effects.)
[   22.252339]  note_interrupt.cold+0xb/0x69
[   22.252367]  common_interrupt+0xf/0xf
[   22.252388]  ? common_interrupt+0xa/0xf
[   22.252397]  smp_apic_timer_interrupt+0x8b/0x180
[   22.252399]  apic_timer_interrupt+0xf/0x20
sieht (bei 22.25) nach kernel panic aus ... ohne grep?

cat /proc/iomem (als root, sonst 000) evtl. auch noch.
Moin,
0000000-00000fff : Reserved
00001000-0009efff : System RAM
0009f000-0009ffff : Reserved
000a0000-000bffff : PCI Bus 0000:00
000e0000-000fffff : Reserved
  000f0000-000fffff : System ROM
00100000-09bfffff : System RAM
09c00000-09d80fff : Reserved
09d81000-09efffff : System RAM
09f00000-09f0afff : ACPI Non-volatile Storage
09f0b000-b85a8fff : System RAM
b85a9000-b87a8fff : Unknown E820 type
b87a9000-bbd7dfff : Reserved
bbd7e000-bdd7dfff : ACPI Non-volatile Storage
  bdc36000-bdc36fff : USBC000:00
bdd7e000-bddfdfff : ACPI Tables
bddfe000-beffffff : System RAM
bf000000-bfffffff : Reserved
c0000000-f7ffffff : PCI Bus 0000:00
  c0000000-d01fffff : PCI Bus 0000:05
    c0000000-cfffffff : 0000:05:00.0
    d0000000-d01fffff : 0000:05:00.0
  d0200000-d05fffff : PCI Bus 0000:05
    d0200000-d02fffff : 0000:05:00.3
      d0200000-d02fffff : xhci-hcd
    d0300000-d03fffff : 0000:05:00.4
      d0300000-d03fffff : xhci-hcd
    d0400000-d04fffff : 0000:05:00.2
    d0500000-d057ffff : 0000:05:00.0
    d0580000-d05bffff : 0000:05:00.5
    d05c0000-d05c7fff : 0000:05:00.6
      d05c0000-d05c7fff : ICH HD audio
    d05c8000-d05cbfff : 0000:05:00.1
      d05c8000-d05cbfff : ICH HD audio
    d05cc000-d05cdfff : 0000:05:00.2
  d0600000-d06fffff : PCI Bus 0000:04
    d0600000-d0603fff : 0000:04:00.0
      d0600000-d0603fff : iwlwifi
  d0700000-d07fffff : PCI Bus 0000:03
    d0700000-d0700fff : 0000:03:00.0
      d0700000-d0700fff : rtsx_pci
  d0800000-d08fffff : PCI Bus 0000:02
    d0800000-d0803fff : 0000:02:00.0
    d0804000-d0804fff : 0000:02:00.0
      d0804000-d0804fff : r8169
  d0900000-d09fffff : PCI Bus 0000:01
    d0900000-d0903fff : 0000:01:00.0
      d0900000-d0903fff : nvme
  d0a00000-d0bfffff : PCI Bus 0000:04
f8000000-fbffffff : PCI MMCONFIG 0000 [bus 00-3f]
  f8000000-fbffffff : pnp 00:00
fc000000-fdffffff : PCI Bus 0000:00
  fd100000-fd17ffff : amd_iommu
  fd200000-fd2fffff : Reserved
feb00000-feb00007 : SB800 TCO
fec00000-fec003ff : IOAPIC 0
fec01000-fec013ff : IOAPIC 1
fec10000-fec1001f : pnp 00:03
fed00000-fed003ff : HPET 2
  fed00000-fed003ff : pnp 00:03
fed40000-fed44fff : STM7308:00
  fed40000-fed44fff : STM7308:00
fed61000-fed613ff : pnp 00:03
fed80000-fed80fff : Reserved
  fed80000-fed80fff : pnp 00:03
fed81500-fed818ff : AMDI0030:00
fee00000-fee00fff : Local APIC
  fee00000-fee00fff : pnp 00:00
ff000000-ffffffff : pnp 00:03
100000000-1beffffff : System RAM
  173000000-173c00e30 : Kernel code
  173c00e31-17434a13f : Kernel data
  174878000-174bfffff : Kernel bss
1bf000000-1bfffffff : RAM buffer
ich hab mal nen größeren Auszug vom dmesg angehangen. Das 25.xx ist jetzt weiter unten wegen reboot:
[    2.212913] device-mapper: uevent: version 1.0.3
[    2.213038] device-mapper: ioctl: 4.40.0-ioctl (2019-01-18) initialised: dm-devel@redhat.com
[    2.217688] random: cryptsetup: uninitialized urandom read (4 bytes read)
[    2.427748] usb 3-1: new full-speed USB device number 2 using xhci_hcd
[    2.451604] random: plymouthd: uninitialized urandom read (8 bytes read)
[    2.451724] random: plymouthd: uninitialized urandom read (8 bytes read)
[    2.581151] usb 3-1: New USB device found, idVendor=8087, idProduct=0025, bcdDevice= 0.02
[    2.581155] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    2.707789] usb 3-2: new high-speed USB device number 3 using xhci_hcd
[    2.882255] usb 3-2: New USB device found, idVendor=04f2, idProduct=b604, bcdDevice= 0.27
[    2.882258] usb 3-2: New USB device strings: Mfr=3, Product=1, SerialNumber=2
[    2.882260] usb 3-2: Product: Integrated Camera
[    2.882261] usb 3-2: Manufacturer: Chicony Electronics Co.,Ltd.
[    2.882262] usb 3-2: SerialNumber: 0001
[    5.614556] random: fast init done
[    8.970833] random: crng init done
[   17.840395] NET: Registered protocol family 38
[   56.112666] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
[   56.231803] systemd[1]: systemd 242.84-1-arch running in system mode. (+PAM +AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=hybrid)
[   56.247778] systemd[1]: Detected architecture x86-64.
[   56.255077] systemd[1]: Set hostname to <arch-lenovo>.
[   56.364076] systemd[1]: Created slice User and Session Slice.
[   56.368612] systemd[1]: Condition check resulted in Journal Audit Socket being skipped.
[   56.368722] systemd[1]: Listening on udev Kernel Socket.
[   56.369013] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[   56.369129] systemd[1]: Listening on Journal Socket.
[   56.370280] systemd[1]: Starting Set Up Additional Binary Formats...
[   56.370996] systemd[1]: Mounting POSIX Message Queue File System...
[   56.382464] EXT4-fs (dm-0): re-mounted. Opts: (null)
[   56.667249] systemd-journald[597]: Received request to flush runtime journal from PID 1
[   56.758974] acpi_cpufreq: overriding BIOS provided _PSD data
[   56.817683] acpi PNP0C14:01: duplicate WMI GUID 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00)
[   56.818044] acpi PNP0C14:02: duplicate WMI GUID 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00)
[   56.818222] acpi PNP0C14:03: duplicate WMI GUID 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00)
[   56.818524] ACPI: AC Adapter [AC] (off-line)
[   56.821969] Non-volatile memory driver v1.3
[   56.836006] thinkpad_acpi: ThinkPad ACPI Extras v0.26
[   56.836009] thinkpad_acpi: http://ibm-acpi.sf.net/
[   56.836010] thinkpad_acpi: ThinkPad BIOS R11ET25W (1.05 ), EC R11HT25W
[   56.836011] thinkpad_acpi: Lenovo ThinkPad E495, model 20NEA001GE
[   56.837216] thinkpad_acpi: radio switch found; radios are enabled
[   56.837233] thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver
[   56.837234] thinkpad_acpi: Disabling thinkpad-acpi brightness events by default...
[   56.859891] snd_pci_acp3x 0000:05:00.5: enabling device (0000 -> 0002)
[   56.862220] piix4_smbus 0000:00:14.0: SMBus Host Controller at 0xb00, revision 0
[   56.862223] piix4_smbus 0000:00:14.0: Using register 0x02 for SMBus port selection
[   56.862447] snd_pci_acp3x 0000:05:00.5: Invalid ACP audio mode : 2
[   56.870559] r8169 0000:02:00.0: can't disable ASPM; OS doesn't have ASPM control
[   56.871941] tpm_tis STM7308:00: 2.0 TPM (device-id 0x0, rev-id 78)
[   56.872492] tpm tpm0: tpm_try_transmit: send(): error -5
[   56.872495] tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
[   56.876834] sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver
[   56.877075] sp5100-tco sp5100-tco: Using 0xfeb00000 for watchdog MMIO address
[   56.877273] sp5100-tco sp5100-tco: initialized. heartbeat=60 sec (nowayout=0)
[   56.892148] libphy: r8169: probed
[   56.892659] r8169 0000:02:00.0 eth0: RTL8168g/8111g, 98:fa:9b:35:80:f2, XID 509, IRQ 72
[   56.892663] r8169 0000:02:00.0 eth0: jumbo features [frames: 9200 bytes, tx checksumming: ko]
[   56.903665] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[   56.908464] thinkpad_acpi: Standard ACPI backlight interface available, not loading native one
[   56.928226] battery: new extension: ThinkPad Battery Extension
[   56.928302] input: ThinkPad Extra Buttons as /devices/platform/thinkpad_acpi/input/input7
[   56.936251] input: PC Speaker as /devices/platform/pcspkr/input/input8
[   56.943477] Bluetooth: Core ver 2.22
[   56.943539] NET: Registered protocol family 31
[   56.943541] Bluetooth: HCI device and connection manager initialized
[   56.943566] Bluetooth: HCI socket layer initialized
[   56.943570] Bluetooth: L2CAP socket layer initialized
[   56.943577] Bluetooth: SCO socket layer initialized
[   56.980239] media: Linux media interface: v0.10
[   57.013064] usbcore: registered new interface driver btusb
[   57.015326] Bluetooth: hci0: Bootloader revision 0.1 build 42 week 52 2015
[   57.018196] Bluetooth: hci0: Device revision is 2
[   57.018199] Bluetooth: hci0: Secure boot is enabled
[   57.018200] Bluetooth: hci0: OTP lock is enabled
[   57.018201] Bluetooth: hci0: API lock is enabled
[   57.018202] Bluetooth: hci0: Debug lock is disabled
[   57.018205] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
[   57.024736] Bluetooth: hci0: Found device firmware: intel/ibt-18-16-1.sfi
[   57.046536] videodev: Linux video capture interface: v2.00
[   57.096527] thinkpad_acpi: battery 1 registered (start 95, stop 100)
[   57.096570] battery: ACPI: Battery Slot [BAT0] (battery present)
[   57.115344] snd_hda_intel 0000:05:00.1: enabling device (0000 -> 0002)
[   57.115646] snd_hda_intel 0000:05:00.1: Handle vga_switcheroo audio client
[   57.128865] kvm: Nested Virtualization enabled
[   57.128888] kvm: Nested Paging enabled
[   57.128890] SVM: Virtual VMLOAD VMSAVE supported
[   57.128893] SVM: Virtual GIF supported
[   57.129029] snd_hda_intel 0000:05:00.6: enabling device (0000 -> 0002)
[   57.137643] MCE: In-kernel MCE decoding enabled.
[   57.159713] EDAC amd64: Node 0: DRAM ECC disabled.
[   57.159718] EDAC amd64: ECC disabled in the BIOS or no ECC capability, module will not load.
                Either enable ECC checking or force module loading by setting 'ecc_enable_override'.
                (Note that use of the override may cause unknown side effects.)
[   57.161561] input: HD-Audio Generic HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:08.1/0000:05:00.1/sound/card0/input10
[   57.161702] input: HD-Audio Generic HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:08.1/0000:05:00.1/sound/card0/input11
[   57.161826] input: HD-Audio Generic HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:08.1/0000:05:00.1/sound/card0/input12
[   57.163613] snd_hda_codec_generic hdaudioC1D0: autoconfig for Generic: line_outs=1 (0x17/0x0/0x0/0x0/0x0) type:speaker
[   57.163618] snd_hda_codec_generic hdaudioC1D0:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[   57.163620] snd_hda_codec_generic hdaudioC1D0:    hp_outs=1 (0x16/0x0/0x0/0x0/0x0)
[   57.163621] snd_hda_codec_generic hdaudioC1D0:    mono: mono_out=0x0
[   57.163622] snd_hda_codec_generic hdaudioC1D0:    inputs:
[   57.163625] snd_hda_codec_generic hdaudioC1D0:      Internal Mic=0x1a
[   57.163626] snd_hda_codec_generic hdaudioC1D0:      Mic=0x19
[   57.172670] uvcvideo: Found UVC 1.00 device Integrated Camera (04f2:b604)
[   57.180822] input: HD-Audio Generic Mic as /devices/pci0000:00/0000:00:08.1/0000:05:00.6/sound/card1/input13
[   57.180965] input: HD-Audio Generic Headphone as /devices/pci0000:00/0000:00:08.1/0000:05:00.6/sound/card1/input14
[   57.187823] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   57.187938] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[   57.187942] cfg80211: failed to load regulatory.db
[   57.190914] uvcvideo 3-2:1.0: Entity type for entity Realtek Extended Controls Unit was not initialized!
[   57.190920] uvcvideo 3-2:1.0: Entity type for entity Extension 4 was not initialized!
[   57.190924] uvcvideo 3-2:1.0: Entity type for entity Processing 2 was not initialized!
[   57.190927] uvcvideo 3-2:1.0: Entity type for entity Camera 1 was not initialized!
[   57.191146] input: Integrated Camera: Integrated C as /devices/pci0000:00/0000:00:08.1/0000:05:00.4/usb3/3-2/3-2:1.0/input/input15
[   57.191321] usbcore: registered new interface driver uvcvideo
[   57.191323] USB Video Class driver (1.1.1)
[   57.240980] Intel(R) Wireless WiFi driver for Linux
[   57.240984] Copyright(c) 2003- 2015 Intel Corporation
[   57.241320] iwlwifi 0000:04:00.0: enabling device (0000 -> 0002)
[   57.275928] r8169 0000:02:00.0 enp2s0: renamed from eth0
[   57.290055] iwlwifi 0000:04:00.0: Found debug destination: EXTERNAL_DRAM
[   57.290062] iwlwifi 0000:04:00.0: Found debug configuration: 0
[   57.292512] iwlwifi 0000:04:00.0: loaded firmware version 46.a41adfe7.0 op_mode iwlmvm
[   57.423046] iwlwifi 0000:04:00.0: Detected Intel(R) Wireless-AC 9260 160MHz, REV=0x324
[   57.437398] iwlwifi 0000:04:00.0: Applying debug destination EXTERNAL_DRAM
[   57.438765] iwlwifi 0000:04:00.0: Allocated 0x00400000 bytes for firmware monitor.
[   57.485625] iwlwifi 0000:04:00.0: base HW address: 84:fd:d1:73:72:a6
[   57.573405] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[   57.574348] thermal thermal_zone0: failed to read out thermal zone (-61)
[   57.578358] iwlwifi 0000:04:00.0 wlp4s0: renamed from wlan0
[   57.964505] psmouse serio1: synaptics: queried max coordinates: x [..5678], y [..4694]
[   58.009129] psmouse serio1: synaptics: queried min coordinates: x [1266..], y [1162..]
[   58.009147] psmouse serio1: synaptics: Your touchpad (PNP: LEN205d PNP0f13) says it can support a different bus. If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@vger.kernel.org.
[   58.116365] psmouse serio1: synaptics: Touchpad model: 1, fw: 10.32, id: 0x1e2a1, caps: 0xf014a3/0x940300/0x12e800/0x500000, board id: 3471, fw id: 2909640
[   58.116384] psmouse serio1: synaptics: serio: Synaptics pass-through port at isa0060/serio1/input0
[   58.178570] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input9
[   58.200738] mousedev: PS/2 mouse device common for all mice
[   58.381840] irq 7: nobody cared (try booting with the "irqpoll" option)
[   58.381845] CPU: 6 PID: 764 Comm: systemd-cryptse Not tainted 5.2.3-arch1-1-ARCH #1
[   58.381846] Hardware name: LENOVO 20NEA001GE/20NEA001GE, BIOS R11ET25W (1.05 ) 04/04/2019
[   58.381847] Call Trace:
[   58.381851]  <IRQ>
[   58.381862]  dump_stack+0x5c/0x80
[   58.381866]  __report_bad_irq+0x35/0xaa
[   58.381868]  note_interrupt.cold+0xb/0x69
[   58.381871]  handle_irq_event_percpu+0x6f/0x80
[   58.381873]  handle_irq_event+0x37/0x54
[   58.381875]  handle_fasteoi_irq+0xb5/0x160
[   58.381879]  handle_irq+0x1f/0x30
[   58.381882]  do_IRQ+0x63/0x100
[   58.381885]  common_interrupt+0xf/0xf
[   58.381886]  </IRQ>
[   58.381888] RIP: 0033:0x7fe3b810bfed
[   58.381890] Code: c1 4d 0f af f7 4f 8d 0c 71 45 89 de 4c 31 ca 48 c1 ca 10 41 89 d7 49 01 d3 4d 0f af f7 41 89 cf 4f 8d 1c 73 45 89 e6 4c 31 d8 <48> d1 c0 4d 0f af f7 49 01 cc 4f 8d 24 74 41 89 ee 4c 31 e2 48 c1
[   58.381891] RSP: 002b:00007fe38de418e0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffffda
[   58.381893] RAX: 5fd2d6328284f35c RBX: 6242d8db09552873 RCX: 4f45ec9ed619f8de
[   58.381894] RDX: f3a93f410eef4d9a RSI: b9f7c5617d106005 RDI: 4ea8555bf0750232
[   58.381894] RBP: 5150c88def3f505f R08: 100d9c186aee2068 R09: b7a3673675ea90f6
[   58.381895] R10: d3f301d437dbfe0f R11: 76c5022216bb83d4 R12: 239a98ca33f0911c
[   58.381895] R13: 00007fe38de41b20 R14: 0000000033f0911c R15: 00000000d619f8de
[   58.381896] handlers:
[   58.381901] [<0000000028211206>] amd_gpio_irq_handler [pinctrl_amd]
[   58.381902] Disabling IRQ #7
[   58.770597] Bluetooth: hci0: Waiting for firmware download to complete
[   58.771133] Bluetooth: hci0: Firmware loaded in 1716938 usecs
[   58.771256] Bluetooth: hci0: Waiting for device to boot
[   58.787220] Bluetooth: hci0: Device booted in 15635 usecs
[   58.787992] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-18-16-1.ddc
[   58.799283] Bluetooth: hci0: Applying Intel DDC parameters completed
[   58.819235] psmouse serio2: trackpoint: Elan TrackPoint firmware: 0x11, buttons: 3/3
[   59.097908] input: TPPS/2 Elan TrackPoint as /devices/platform/i8042/serio1/serio2/input/input16
[   62.234798] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null)
[   63.106613] Generic Realtek PHY r8169-200:00: attached PHY driver [Generic Realtek PHY] (mii_bus:phy_addr=r8169-200:00, irq=IGNORE)
[   63.221748] r8169 0000:02:00.0 enp2s0: Link is Down
[   63.236576] iwlwifi 0000:04:00.0: Applying debug destination EXTERNAL_DRAM
[   63.356605] iwlwifi 0000:04:00.0: Applying debug destination EXTERNAL_DRAM
[   63.424644] iwlwifi 0000:04:00.0: FW already configured (0) - re-configuring
[   63.458589] iwlwifi 0000:04:00.0: Applying debug destination EXTERNAL_DRAM
[   63.580536] iwlwifi 0000:04:00.0: Applying debug destination EXTERNAL_DRAM
[   63.648411] iwlwifi 0000:04:00.0: FW already configured (0) - re-configuring
[   65.472542] fuse: init (API version 7.31)
[   66.601694] amdgpu: [powerplay] pp_dpm_get_sclk_od was not implemented.
[   66.601716] amdgpu: [powerplay] pp_dpm_get_mclk_od was not implemented.
[   70.634497] wlp4s0: authenticate with 18:9c:27:40:bf:ee
[   70.642348] wlp4s0: send auth to 18:9c:27:40:bf:ee (try 1/3)
[   70.685822] wlp4s0: authenticated
[   70.687757] wlp4s0: associate with 18:9c:27:40:bf:ee (try 1/3)
[   70.692232] wlp4s0: RX AssocResp from 18:9c:27:40:bf:ee (capab=0x11 status=0 aid=5)
[   70.694960] wlp4s0: associated
[   70.746145] IPv6: ADDRCONF(NETDEV_CHANGE): wlp4s0: link becomes ready
[   72.051729] tun: Universal TUN/TAP device driver, 1.6
OK, irgendeine IRQ-Geschichte die nicht abgeholt wird. Das wird mit dem RAM wohl nichts zu tun haben.

Im iomem ist die höchste Adresse nur ~7.5GB und knapp 1GB geht an PCI Bus 0000:00 (c0000000-f7ffffff). Bleiben ~6312M dem System RAM. Kann aber auch sein daß ich das gerade falsch interpretiere.

Steht im lshw vielleicht noch was?
Jetzt wo ich weiß, dass du keinen Ryzen2 sondern Ryzen 3 also 3. Generation hast, könnte das Bootproblem vielleicht damit zu tun haben?
https://www.gamestar.de/artikel/linux-bootet-nicht-neue-ryzen-prozessoren-alte-amd-cpus-betroffen,3346349.html
Du könntest nach einem Biosupdate suchen ob es da bereits was gibt.
Ist allerdings im Widerspruch von dem, dass du mit dem Fallback kernel booten kannst. Demzufolge dürfte eigentlich nur ein Modul fehlen, dass merkwürdigerweise von der automatischen Hardwareerkennung nicht erkannt wird.
Hat auch nichts mit den 6GB Ram zu tun.
Du könntest auch noch zum Vergleich ein dmesg mit dem fallback Kernel zeigen.
Hi,

also ich habe zum testen auch mal den lts kernel verwendet. Da wird im system auch nicht mehr RAM angezeigt. Was ich gerade noch mache ist zum testen mal den mainline Kerlen 5.3-rc1 drauf zu bügeln und kucken ob es wirklich was mit der Hardwareunterstützung zu tun hat. Bis der fertig compiled ist hier mal die Ausgabe von lshw:
arch-lenovo                 
    description: Notebook
    product: 20NEA001GE (LENOVO_MT_20NE_BU_Think_FM_ThinkPad E495)
    vendor: LENOVO
    version: ThinkPad E495
    serial: PF1RF3NF
    width: 4294967295 bits
    capabilities: smbios-3.1 dmi-3.1 smp vsyscall32
    configuration: administrator_password=disabled chassis=notebook family=ThinkPad E495 power-on_password=disabled sku=LENOVO_MT_20NE_BU_Think_FM_ThinkPad E495 uuid=4C2A32AA-4B2B-B211-A85C-9E34010A9CA7
  *-core
       description: Motherboard
       product: 20NEA001GE
       vendor: LENOVO
       physical id: 0
       version: Not Defined
       serial: L1HF96A008S
       slot: Not Available
     *-memory
          description: System Memory
          physical id: 1
          slot: System board or motherboard
          size: 8GiB
        *-bank:0
             description: SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2400 MHz (0,4 ns)
             product: M471A1K43DB1-CTD
             vendor: Samsung
             physical id: 0
             serial: 7262AC17
             slot: DIMM 0
             size: 8GiB
             width: 64 bits
             clock: 2400MHz (0.4ns)
        *-bank:1
             description: [empty]
             product: Unknown
             vendor: Unknown
             physical id: 1
             serial: Unknown
             slot: DIMM 0
     *-cache:0
          description: L1 cache
          physical id: 3
          slot: L1 - Cache
          size: 384KiB
          capacity: 384KiB
          clock: 1GHz (1.0ns)
          capabilities: pipeline-burst internal write-back unified
          configuration: level=1
     *-cache:1
          description: L2 cache
          physical id: 4
          slot: L2 - Cache
          size: 2MiB
          capacity: 2MiB
          clock: 1GHz (1.0ns)
          capabilities: pipeline-burst internal write-back unified
          configuration: level=2
     *-cache:2
          description: L3 cache
          physical id: 5
          slot: L3 - Cache
          size: 4MiB
          capacity: 4MiB
          clock: 1GHz (1.0ns)
          capabilities: pipeline-burst internal write-back unified
          configuration: level=3
     *-cpu
          description: CPU
          product: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx
          vendor: Advanced Micro Devices [AMD]
          physical id: 6
          bus info: cpu@0
          version: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx
          serial: None
          slot: FP5
          size: 2388MHz
          capacity: 3700MHz
          width: 64 bits
          clock: 100MHz
          capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pstate sme ssbd sev ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 xsaves clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov succor smca cpufreq
          configuration: cores=4 enabledcores=4 threads=8
     *-firmware
          description: BIOS
          vendor: LENOVO
          physical id: d
          version: R11ET25W (1.05 )
          date: 04/04/2019
          size: 128KiB
          capacity: 15MiB
          capabilities: pci pnp upgrade shadowing cdboot bootselect edd int13floppy720 int5printscreen int9keyboard int14serial int17printer int10video acpi usb biosbootspecification uefi
     *-pci:0
          description: Host bridge
          product: Raven/Raven2 Root Complex
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 00
          width: 32 bits
          clock: 33MHz
        *-generic UNCLAIMED
             description: IOMMU
             product: Raven/Raven2 IOMMU
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 0.2
             bus info: pci@0000:00:00.2
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: msi ht bus_master cap_list
             configuration: latency=0
        *-pci:0
             description: PCI bridge
             product: Raven/Raven2 PCIe GPP Bridge [6:0]
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 1.1
             bus info: pci@0000:00:01.1
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:26 memory:d0900000-d09fffff
           *-storage
                description: Non-Volatile memory controller
                product: SK hynix
                vendor: SK hynix
                physical id: 0
                bus info: pci@0000:01:00.0
                version: 00
                width: 64 bits
                clock: 33MHz
                capabilities: storage pm msi msix pciexpress nvm_express bus_master cap_list
                configuration: driver=nvme latency=0
                resources: irq:31 memory:d0900000-d0903fff
        *-pci:1
             description: PCI bridge
             product: Raven/Raven2 PCIe GPP Bridge [6:0]
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 1.2
             bus info: pci@0000:00:01.2
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:27 ioport:2000(size=4096) memory:d0800000-d08fffff
           *-network
                description: Ethernet interface
                product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
                vendor: Realtek Semiconductor Co., Ltd.
                physical id: 0
                bus info: pci@0000:02:00.0
                logical name: enp2s0
                version: 10
                serial: 98:fa:9b:35:80:f2
                capacity: 1Gbit/s
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
                configuration: autonegotiation=on broadcast=yes driver=r8169 firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII
                resources: irq:70 ioport:2000(size=256) memory:d0804000-d0804fff memory:d0800000-d0803fff
        *-pci:2
             description: PCI bridge
             product: Raven/Raven2 PCIe GPP Bridge [6:0]
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 1.3
             bus info: pci@0000:00:01.3
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:28 memory:d0700000-d07fffff
           *-generic
                description: Unassigned class
                product: RTS522A PCI Express Card Reader
                vendor: Realtek Semiconductor Co., Ltd.
                physical id: 0
                bus info: pci@0000:03:00.0
                version: 01
                width: 32 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list
                configuration: driver=rtsx_pci latency=0
                resources: irq:52 memory:d0700000-d0700fff
        *-pci:3
             description: PCI bridge
             product: Raven/Raven2 PCIe GPP Bridge [6:0]
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 1.6
             bus info: pci@0000:00:01.6
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:29 ioport:3000(size=4096) memory:d0600000-d06fffff ioport:d0a00000(size=2097152)
           *-network
                description: Wireless interface
                product: Wireless-AC 9260
                vendor: Intel Corporation
                physical id: 0
                bus info: pci@0000:04:00.0
                logical name: wlp4s0
                version: 29
                serial: 84:fd:d1:73:72:a6
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=iwlwifi driverversion=5.2.3-arch1-1-ARCH firmware=46.a41adfe7.0 ip=192.168.0.26 latency=0 link=yes multicast=yes wireless=IEEE 802.11
                resources: irq:77 memory:d0600000-d0603fff
        *-pci:4
             description: PCI bridge
             product: Raven/Raven2 Internal PCIe GPP Bridge 0 to Bus A
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 8.1
             bus info: pci@0000:00:08.1
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: pci pm pciexpress msi normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:30 ioport:1000(size=4096) memory:d0200000-d05fffff ioport:c0000000(size=270532608)
           *-display
                description: VGA compatible controller
                product: Picasso
                vendor: Advanced Micro Devices, Inc. [AMD/ATI]
                physical id: 0
                bus info: pci@0000:05:00.0
                version: c2
                width: 64 bits
                clock: 33MHz
                capabilities: pm pciexpress msi msix vga_controller bus_master cap_list
                configuration: driver=amdgpu latency=0
                resources: irq:50 memory:c0000000-cfffffff memory:d0000000-d01fffff ioport:1000(size=256) memory:d0500000-d057ffff
           *-multimedia:0
                description: Audio device
                product: Raven/Raven2/Fenghuang HDMI/DP Audio Controller
                vendor: Advanced Micro Devices, Inc. [AMD/ATI]
                physical id: 0.1
                bus info: pci@0000:05:00.1
                version: 00
                width: 32 bits
                clock: 33MHz
                capabilities: pm pciexpress msi bus_master cap_list
                configuration: driver=snd_hda_intel latency=0
                resources: irq:74 memory:d05c8000-d05cbfff
           *-generic UNCLAIMED
                description: Encryption controller
                product: Family 17h (Models 10h-1fh) Platform Security Processor
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.2
                bus info: pci@0000:05:00.2
                version: 00
                width: 32 bits
                clock: 33MHz
                capabilities: pm pciexpress msi msix cap_list
                configuration: latency=0
                resources: memory:d0400000-d04fffff memory:d05cc000-d05cdfff
           *-usb:0
                description: USB controller
                product: Raven USB 3.1
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.3
                bus info: pci@0000:05:00.3
                version: 00
                width: 64 bits
                clock: 33MHz
                capabilities: pm pciexpress msi msix xhci bus_master cap_list
                configuration: driver=xhci_hcd latency=0
                resources: irq:53 memory:d0200000-d02fffff
              *-usbhost:0
                   product: xHCI Host Controller
                   vendor: Linux 5.2.3-arch1-1-ARCH xhci-hcd
                   physical id: 0
                   bus info: usb@1
                   logical name: usb1
                   version: 5.02
                   capabilities: usb-2.00
                   configuration: driver=hub slots=4 speed=480Mbit/s
              *-usbhost:1
                   product: xHCI Host Controller
                   vendor: Linux 5.2.3-arch1-1-ARCH xhci-hcd
                   physical id: 1
                   bus info: usb@2
                   logical name: usb2
                   version: 5.02
                   capabilities: usb-3.10
                   configuration: driver=hub slots=4 speed=10000Mbit/s
           *-usb:1
                description: USB controller
                product: Raven USB 3.1
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.4
                bus info: pci@0000:05:00.4
                version: 00
                width: 64 bits
                clock: 33MHz
                capabilities: pm pciexpress msi msix xhci bus_master cap_list
                configuration: driver=xhci_hcd latency=0
                resources: irq:49 memory:d0300000-d03fffff
              *-usbhost:0
                   product: xHCI Host Controller
                   vendor: Linux 5.2.3-arch1-1-ARCH xhci-hcd
                   physical id: 0
                   bus info: usb@3
                   logical name: usb3
                   version: 5.02
                   capabilities: usb-2.00
                   configuration: driver=hub slots=2 speed=480Mbit/s
                 *-usb:0
                      description: Bluetooth wireless interface
                      vendor: Intel Corp.
                      physical id: 1
                      bus info: usb@3:1
                      version: 0.02
                      capabilities: bluetooth usb-2.00
                      configuration: driver=btusb maxpower=100mA speed=12Mbit/s
                 *-usb:1
                      description: Video
                      product: Integrated Camera
                      vendor: Chicony Electronics Co.,Ltd.
                      physical id: 2
                      bus info: usb@3:2
                      version: 0.27
                      serial: 0001
                      capabilities: usb-2.01
                      configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
              *-usbhost:1
                   product: xHCI Host Controller
                   vendor: Linux 5.2.3-arch1-1-ARCH xhci-hcd
                   physical id: 1
                   bus info: usb@4
                   logical name: usb4
                   version: 5.02
                   capabilities: usb-3.10
                   configuration: driver=hub slots=1 speed=10000Mbit/s
           *-multimedia:1 UNCLAIMED
                description: Multimedia controller
                product: Raven/Raven2/FireFlight/Renoir Audio Processor
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.5
                bus info: pci@0000:05:00.5
                version: 00
                width: 32 bits
                clock: 33MHz
                capabilities: pm pciexpress msi cap_list
                configuration: latency=0
                resources: memory:d0580000-d05bffff
           *-multimedia:2
                description: Audio device
                product: Family 17h (Models 10h-1fh) HD Audio Controller
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.6
                bus info: pci@0000:05:00.6
                version: 00
                width: 32 bits
                clock: 33MHz
                capabilities: pm pciexpress msi bus_master cap_list
                configuration: driver=snd_hda_intel latency=0
                resources: irq:76 memory:d05c0000-d05c7fff
        *-serial
             description: SMBus
             product: FCH SMBus Controller
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 14
             bus info: pci@0000:00:14.0
             version: 61
             width: 32 bits
             clock: 66MHz
             configuration: driver=piix4_smbus latency=0
             resources: irq:0
        *-isa
             description: ISA bridge
             product: FCH LPC Bridge
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 14.3
             bus info: pci@0000:00:14.3
             version: 51
             width: 32 bits
             clock: 66MHz
             capabilities: isa bus_master
             configuration: latency=0
     *-pci:1
          description: Host bridge
          product: Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 101
          bus info: pci@0000:00:01.0
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:2
          description: Host bridge
          product: Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 102
          bus info: pci@0000:00:08.0
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:3
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 0
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 103
          bus info: pci@0000:00:18.0
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:4
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 1
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 104
          bus info: pci@0000:00:18.1
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:5
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 2
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 105
          bus info: pci@0000:00:18.2
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:6
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 3
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 106
          bus info: pci@0000:00:18.3
          version: 00
          width: 32 bits
          clock: 33MHz
          configuration: driver=k10temp
          resources: irq:0
     *-pci:7
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 4
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 107
          bus info: pci@0000:00:18.4
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:8
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 5
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 108
          bus info: pci@0000:00:18.5
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:9
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 6
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 109
          bus info: pci@0000:00:18.6
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:10
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 7
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 10a
          bus info: pci@0000:00:18.7
          version: 00
          width: 32 bits
          clock: 33MHz
  *-battery
       product: 01AV448
       vendor: Celxpert
       physical id: 1
       slot: Front
       capacity: 45730mWh
       configuration: voltage=11,1V
Was dabei spannend ist ist das hier:
     *-memory
          description: System Memory
          physical id: 1
          slot: System board or motherboard
          size: 8GiB
Achso, und das mit dem BIOS Update war das erste an das ich gedacht habe, da ist jedoch das aktuellste BIOS drauf :/
2GB für die Grafikkarte könnte plausibel sein, bei den Desktopboards ist das das Maximum was man zuteilen kann bei Ryzen (zumindest 2xxxG Serie, die 3xxx habe ich nicht). Falls du das im BIOS nicht ändern kannst, vermute ich, dass du da auch nicht rankommst.
Picasso ist übrigens den Codename für die integrierte AMD Grafikkarte.
Die 256M die oben bei Memory stehen sind nicht der zugewiesene Speicher des RAMs, habe ich eben bei mir selbst geprüft.

EDIT:
Einfach mal folgendes ausführen. Die Namen mit dem drm* können leicht abweichen 
# cat /sys/class/drm_dp_aux_dev/drm_dp_aux0/device/mem_info_vram_total
Kabbone du bist der beste 🙂
cat /sys/class/drm_dp_aux_dev/drm_dp_aux0/device/mem_info_vram_total
2147483648
Ergibt umgerechnet 2GB. Ich finde es zwar etwas extrem der Graka einfach pauschal 2GB RAM zu zu weisen, aber gut. Schade dass ich das nicht mal im BIOS ändern kann.
Ja, pauschal ohne Möglichkeit im BIOS es zu verändern finde ich auch etwas extrem, allerdings checkt das wahrscheinlich Otto Normal User nicht und wundert sich über die miese Performance in Spielen z.B.
Hmmm.

https://github.com/torvalds/linux/blob/master/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c

https://dri.freedesktop.org/docs/drm/gpu/amdgpu.html
The amdgpu driver supports the following module parameters:

vramlimit (int)

Restrict the total amount of VRAM in MiB for testing. The default is 0 (Use full VRAM).

vis_vramlimit (int)

Restrict the amount of CPU visible VRAM in MiB for testing. The default is 0 (Use full CPU visible VRAM).
Gibt das Speicher frei oder nutzt es ihn dann nur nicht? Tja. Kann ich nicht ausprobieren :-)

Und was genau ist jetzt vram und was vis_vram?

Unter dem /sys sollten noch mehr Sachen stehen ( `head /sys/class/drm_dp_aux_dev/drm_dp_aux0/device/*` )

Wieso das nicht im iomem und anderen Angaben aufscheinen soll, ist mir auch unklar, aber vielleicht lese ich es ja auch irgendwie verkehrt.
Naja sagen wir es so, es ist noch eine Bank für einen 8GB Ram Riegel frei....welcher zwischen 30 und 40 € kostet. Bevor ich jetzt ewig damit verbringe da rum zu spielen und
am Ende noch das System "verschlimmbessere" erweitere ich einfach den RAM. Da der Laptop für mich nur ein Unterwegs-Laptop ist und das anspruchsvollste Anwendungsszenario sein
wird, einen Film in 1080p zu gucken, werde ich erst mal beobachten ob mir der RAM reicht oder ich upgrade 🙂

Mir ging es mit dem Thread primär wirklich darum, ob ich mir einen Laptop mit kaputten RAM gekauft habe welchen ich zurück senden muss, oder ich zu doof war das Ding zu konfigurieren,
oder ob es einfach so ist und ich nichts ändern kann außer falls nötig den RAM zu erweitern.

Ich danke euch jedenfalls für die Unterstützung für die Lösung meines Problems!

Und nebenbei bemerkt...Ich mag das Forum hier sehr gern. Auch ohne einen Thread zu erstellen findet man jede Menge gute Tips und Tricks. Ihr seid echt ne tolle Community 🙂