Hallo zusammen, ich hoffe hier wird mir geholfen. Ich habe seit längerer Zeit Arch Linux, das seinen Dienst tadellos versehen hat. Nun ist (vermutlich nach einem Update?) ein Fehler aufgetreten, den ich nicht beheben kann. Ich habe lange getüftelt, schlussendlich Arch neu installiert und der Fehler bleibt...

Ich habe Arch auf meinem Lenovo T470 (16 GB Ram, 2 TB SSD, kein Swap) installiert, als Desktop bevorzuge ich XFCE (bin zur Zeit auf KDE, damit läuft die Kiste etwas stabiler, so mein subjektiver Eindruck).

Der Fehler äußert sich darin, dass Laptop auf einmal hängen bleibt und auf keine Eingabe mehr reagiert. Nur ein langer Druck auf den Ausschalter hilft, der Rechner startet neu und ich habe etwa 12 Stunden Ruhe.

atop lieferte folgendes:

ATOP - archy  2025/11/27 09:37:06          -----------------7  12h20m36s elapsed
PRC | sys    3m49s | user  15m36s | #proc    314 | #tidle   124 | no  procacct |
CPU | sys      26% | user     82% | irq       5% | idle    284% | wait      3% |
cpu | sys       6% | user     22% | irq       1% | idle     70% | cpu001 w  1% |
cpu | sys       7% | user     21% | irq       1% | idle     71% | cpu003 w  1% |
cpu | sys       6% | user     20% | irq       2% | idle     71% | cpu000 w  1% |
cpu | sys       6% | user     20% | irq       1% | idle     72% | cpu002 w  1% |
CPL | numcpu     4 | avg1    2.25 | avg5    2.67 | csw 45617600 | intr 16688e3 |
MEM | tot    15.4G | free  229.4M | avail   1.9G | cache   2.9G | slab  202.8M |
MEM | numnode    1 | shmem   1.1G | shswp   0.0M | pgtab  53.0M | anthp  74.0M |
SWP | tot     0.0M | free    0.0M | swcac   0.0M | vmcom  18.8G | vmlim   7.7G |
PAG | pgin  461323 | pgout 510782 | zswout     0 | swout      0 | oomkill    0 |
PSI | cpusome   1% | memsome   0% | memfull   0% | iosome    0% | iofull    0% |
LVM |         root | busy      1% | read   41097 | write 124148 | avio 0.25 ms |
LVM |  Datenpladde | busy      0% | read      67 | write     42 | avio 0.68 ms |
DSK |      nvme0n1 | busy      0% | read   33147 | write 105726 | avio 0.23 ms |
DSK |          sdb | busy      0% | read     837 | write      0 | avio 5.00 ms |
DSK |          sda | busy      0% | read     228 | write     25 | avio 0.42 ms |
NET | transport    | tcpi   45869 | tcpo   46670 | udpi   46227 | udpo   34792 |
NET | network      | ipi    94357 | ipo    80584 | ipfrw      0 | deliv  94145 |
NET | wlan0     0% | pcki  427840 | pcko   84344 | si   90 Kbps | so    3 Kbps |
NET | lo      ---- | pcki     916 | pcko     916 | si    0 Kbps | so    0 Kbps |
*** System and Process Activity since Boot ***    Restricted view (unprivileged)
    PID SYSCPU USRCPU RDELAY BDELAY  VGROW  RGROW S CPUNR  MEM CMD            
    642 13.94s 10m56s  2m07s  0.00s  10.1G  10.1G R     1  65% systemd-udevd  
  38377  2.64s 19.26s 45.04s  0.00s   3.4G 623.5M S     3   4% betterbird-bin 
  38378  5.78s 22.66s 65.20s  0.00s   4.8G 587.1M S     2   4% librewolf      
  38076  1.31s  6.28s 42.21s  0.00s   2.7G 436.2M R     0   3% plasmashell    
  37958  7.58s 10.32s  8.97s  0.00s   2.0G 350.4M S     2   2% kwin_wayland   
  38362  3.22s  8.71s 41.34s  0.00s   1.6G 300.3M S     0   2% plasma-systemm 
  39821  0.29s  1.26s  2.22s  0.00s   2.9G 277.5M S     3   2% krunner        
  38044  0.37s  1.48s 76.59s  0.00s   1.5G 238.6M S     0   2% kded6
...

Folgende SystemD-Dienste werden gelistet:

  accounts-daemon.service                             loaded active running Accounts Service
  avahi-daemon.service                                loaded active running Avahi mDNS/DNS-SD Stack
  bluetooth.service                                   loaded active running Bluetooth service
  colord.service                                      loaded active running Manage, Install and Generate Color Profiles
  cups.service                                        loaded active running CUPS Scheduler
  dbus-broker.service                                 loaded active running D-Bus System Message Bus
  kmod-static-nodes.service                           loaded active exited  Create List of Static Device Nodes
  ldconfig.service                                    loaded active exited  Rebuild Dynamic Linker Cache
  lightdm.service                                     loaded active running Light Display Manager
  NetworkManager.service                              loaded active running Network Manager
  plymouth-quit-wait.service                          loaded active exited  Hold until boot process finishes up
  plymouth-quit.service                               loaded active exited  Terminate Plymouth Boot Screen
  plymouth-read-write.service                         loaded active exited  Tell Plymouth To Write Out Runtime Data
  plymouth-start.service                              loaded active exited  Show Plymouth Boot Screen
  polkit.service                                      loaded active running Authorization Manager
  rtkit-daemon.service                                loaded active running RealtimeKit Scheduling Policy Service
  syncthing@markus.service                            loaded active running Syncthing - Open Source Continuous File Synchronization for markus
  systemd-backlight@backlight:intel_backlight.service loaded active exited  Load/Save Screen Backlight Brightness of backlight:intel_backlight
  systemd-boot-random-seed.service                    loaded active exited  Update Boot Loader Random Seed
  systemd-cryptsetup@Datenpladde.service              loaded active exited  Cryptography Setup for Datenpladde
  systemd-journal-catalog-update.service              loaded active exited  Rebuild Journal Catalog
  systemd-journal-flush.service                       loaded active exited  Flush Journal to Persistent Storage
  systemd-journald.service                            loaded active running Journal Service
  systemd-logind.service                              loaded active running User Login Management
  systemd-modules-load.service                        loaded active exited  Load Kernel Modules
  systemd-random-seed.service                         loaded active exited  Load/Save OS Random Seed
  systemd-remount-fs.service                          loaded active exited  Remount Root and Kernel File Systems
  systemd-sysctl.service                              loaded active exited  Apply Kernel Variables
  systemd-sysusers.service                            loaded active exited  Create System Users
  systemd-timesyncd.service                           loaded active running Network Time Synchronization
  systemd-tmpfiles-setup-dev-early.service            loaded active exited  Create Static Device Nodes in /dev gracefully
  systemd-tmpfiles-setup-dev.service                  loaded active exited  Create Static Device Nodes in /dev
  systemd-tmpfiles-setup.service                      loaded active exited  Create System Files and Directories
  systemd-udev-load-credentials.service               loaded active exited  Load udev Rules from Credentials
  systemd-udev-trigger.service                        loaded active exited  Coldplug All udev Devices
  systemd-udevd.service                               loaded active running Rule-based Manager for Device Events and Files
  systemd-update-done.service                         loaded active exited  Update is Completed
  systemd-update-utmp.service                         loaded active exited  Record System Boot/Shutdown in UTMP
  systemd-user-sessions.service                       loaded active exited  Permit User Sessions
  systemd-userdb-load-credentials.service             loaded active exited  Load JSON user/group Records from Credentials
  systemd-userdbd.service                             loaded active running User Database Manager
  systemd-vconsole-setup.service                      loaded active exited  Virtual Console Setup
  udisks2.service                                     loaded active running Disk Manager
  upower.service                                      loaded active running Daemon for power management
  user-runtime-dir@1000.service                       loaded active exited  User Runtime Directory /run/user/1000
  user@1000.service                                   loaded active running User Manager for UID 1000
  wpa_supplicant.service                              loaded active running WPA supplicant

Vielleicht kann mir jemand helfen? Ich bin mit meinem Latein (auch nach tagelanger Recherche im Netz) am Ende - danke für die Aufmerksamkeit des geneigten Lesers. :-)

PS: Es sind (abgesehen von einer SD-Karte) keine USB-Geräte mit dem Gerät verbunden, eine NAS wird per SMB gemountet.