Bug 471809

Summary:	[Wayland] [NVIDIA] Compositing fails under vram exhaustion, nv_gbm_bo_create fails, Failed to allocate NVKMS memory for GEM object
Product:	[Plasma] kwin	Reporter:	spryor
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	kde, nate, xaver.hugl
Priority:	NOR
Version First Reported In:	5.27.6
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description spryor 2023-07-01 02:53:15 UTC

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.

Comment 1 Zamundaaa 2023-07-02 21:57:41 UTC

> Windows/menus/etc work and are visible

I don't think that's possible. If an application can't allocate buffers, there's nothing for KWin to show. I'm a bit confused how you get invisible windows though - without new buffers, applications can't resize windows.

Comment 2 spryor 2023-07-02 21:59:47 UTC

Yeah, it's really weird, I get the titlebar and border, but everything else is invisible for chrome, might be due to it being a GTK application. The start menu just doesn't render anything though

Comment 3 David Edmundson 2023-07-07 09:47:24 UTC

This is now quite old and very driver centric. Please reopen if an issue remains.

Comment 4 spryor 2023-07-07 11:08:44 UTC

Wait, what? What version did you attempt with?

Comment 5 spryor 2023-07-07 13:43:57 UTC

Please elaborate on the configuration you used, I'm using the current versions in the Fedora repos, but I would like to retest with your environment

Comment 6 Zamundaaa 2023-09-19 12:28:59 UTC

There's nothing we can do about this. Please report the problem to NVidia

Comment 7 spryor 2023-09-19 18:17:58 UTC

Gotcha, ty!