The guest crashes with the following error: - Gentoo guest: Jan 06 07:21:09 usv kernel: [TTM] Buffer eviction failed Jan 06 07:21:09 usv kernel: qxl 0000:00:01.0: object_init failed for (385024, 0x00000001) Jan 06 07:21:09 usv kernel: [drm:qxl_gem_object_create [qxl]] *ERROR* Failed to allocate GEM object (384020, 1, 4096, -12) Jan 06 07:21:09 usv kernel: [drm:qxl_alloc_ioctl [qxl]] *ERROR* qxl_alloc_ioctl: failed to create gem ret=-12 Jan 06 07:21:10 usv systemd-coredump[538260]: elfutils disabled, parsing ELF objects not supported Jan 06 07:21:10 usv systemd-coredump[538260]: [🡕] Process 1432 (X) of user 1000 dumped core. Jan 06 07:21:10 usv systemd[1388]: Failed to start Xdg Desktop Portal For KDE. ... (some unrelated messages removed) Jan 06 07:21:26 usv systemd-coredump[539685]: elfutils disabled, parsing ELF objects not supported Jan 06 07:21:26 usv systemd-coredump[539685]: [🡕] Process 539430 (spice-vdagent) of user 1000 dumped core. The guest runs the latest stable kernel available when this report is created (6.6.67) and KDE/Plasma at the time of the crash and the SDDM login shows up or a black screen with a very slow response or it simply stalls so it must be forcibly stopped/restarted. - KDE Neon guest ian 05 19:48:23 neon-pc kernel: [TTM] Buffer eviction failed ian 05 19:48:23 neon-pc kernel: qxl 0000:00:01.0: object_init failed for (262144, 0x00000001) ian 05 19:48:23 neon-pc kernel: [drm:qxl_gem_object_create [qxl]] *ERROR* Failed to allocate GEM object (262100, 1, 4096, -12) ian 05 19:48:23 neon-pc kernel: [drm:qxl_alloc_ioctl [qxl]] *ERROR* qxl_alloc_ioctl: failed to create gem ret=-12 ian 05 19:48:23 neon-pc spice-vdagentd[2322]: Error getting active session: No data available ian 05 19:48:23 neon-pc spice-vdagentd[2322]: Error getting active session: No data available ian 05 19:48:24 neon-pc systemd-coredump[89227]: [🡕] Process 1330 (Xorg) of user 0 dumped core. Module libgcc_s.so.1 from deb gcc-14-14.2.0-4ubuntu2~24.04.amd64 Module libstdc++.so.6 from deb gcc-14-14.2.0-4ubuntu2~24.04.amd64 Module libzstd.so.1 from deb libzstd-1.5.5+dfsg2-2build1.1.amd64 Module libsystemd.so.0 from deb systemd-255.4-1ubuntu8.4.amd64 Module libudev.so.1 from deb systemd-255.4-1ubuntu8.4.amd64 Stack trace of thread 1330: #0 0x000079ccd3a9eb1c __pthread_kill_implementation (libc.so.6 + 0x9eb1c) #1 0x000079ccd3a4526e __GI_raise (libc.so.6 + 0x4526e) #2 0x000079ccd3a288ff __GI_abort (libc.so.6 + 0x288ff) #3 0x0000609be81e4c9e OsAbort (Xorg + 0x1e4c9e) #4 0x0000609be81ea7e7 n/a (Xorg + 0x1ea7e7) #5 0x0000609be81eb867 FatalError (Xorg + 0x1eb867) #6 0x0000609be81e1e1b n/a (Xorg + 0x1e1e1b) #7 0x000079ccd3a45320 __restore_rt (libc.so.6 + 0x45320) #8 0x000079ccd36f2bfd n/a (qxl_drv.so + 0x8bfd) #9 0x000079ccd36f309c n/a (qxl_drv.so + 0x909c) #10 0x000079ccd37000d0 n/a (qxl_drv.so + 0x160d0) #11 0x0000609be81bd89d miCopyRegion (Xorg + 0x1bd89d) At the time of the crash, the guest runs KDE/Plasma and the latest kernel available when this report is created (Linux neon-pc 6.8.0-51-generic #52-Ubuntu SMP PREEMPT_DYNAMIC Thu Dec 5 13:09:44 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux ). Plymouth shows up or a black screen with a very slow response or it simply stalls so it must be forcibly stopped/restarted. On both guests, the crash happens at least once per hour. Similar issues reported here: https://forum.proxmox.com/threads/ttm-buffer-eviction-failed.152720/ https://ubuntuforums.org/showthread.php?t=2497311
I don't see any upstream issues that look similar. I don't think qxl is actively maintained, but could you please file an issue upstream at https://gitlab.freedesktop.org/xorg/driver/xf86-video-qxl/-/issues ?
