https://bugs.kde.org/show_bug.cgi?id=471809
Bug ID: 471809
Summary: [Wayland] [NVIDIA] Compositing fails under vram
exhaustion
Classification: Plasma
Product: kwin
Version: 5.27.6
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: spr...@redhat.com
Target Milestone: ---
SUMMARY
Under vram exhaustion scenarios, windows, menus, etc, will all fail to render.
Windows show only titlebar and become completely transparent. The following
errors in the log:
Jun 30 21:37:51 graviton.localdomain kwin_wayland_wrapper[50295]:
src/nv_gbm.c:99: GBM-DRV error (nv_gbm_bo_create):
DRM_IOCTL_NVIDIA_GEM_ALLOC_NVKMS_MEMORY failed (ret=-1)
Jun 30 21:37:51 graviton.localdomain kernel:
[drm:nv_drm_gem_alloc_nvkms_memory_ioctl [nvidia_drm]] *ERROR* [nvidia-drm]
[GPU ID 0x00000100] Failed to allocate NVKMS memory for GEM object
Jun 30 21:37:51 graviton.localdomain kwin_wayland_wrapper[50295]: Error getting
buffer
STEPS TO REPRODUCE
1. Run KDE Wayland with Nvidia driver
2. Open applications/games/etc to exhaust vram
3. Attempt to manipulate other windows, minimize/maximize, attempt to open the
start menu, etc, they won't render on the screen
OBSERVED RESULT
Windows render only titlebar, no content. Start menu on the desktop gains the
blue tick like it's opened, but not visible
EXPECTED RESULT
Windows/menus/etc work and are visible
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 38 KDE Plasma Wayland
KDE Plasma Version: plasma-workspace-wayland-5.27.6-1.fc38.x86_64
KDE Frameworks Version: kde-runtime-17.08.3-26.fc38.x86_64
Qt Version: qt5-qtwayland-5.15.10-1.fc38.x86_64
ADDITIONAL INFORMATION
Even after vram is freed up, the windows need to be minimized/maximized again
for them to be visible. Not sure if other stuff is broken elsewhere in the
stack by this behavior. The windows still accept input, despite the broken
compositing.
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