Graphics memory (VRAM) leak in mutter-x11-frames

[George Salukvadze]

I'm seeing degraded performance with NVIDIA Geforce 3008 Mobile and two screens.
After launching nvidia-smi, I can clearly see that there's a memory leak in mutter-x11-frames, which uses around 10-12 GB of VRAM.
nvidia-drivers-525
Ubuntu 23.04
X11

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 6.2.0-20.20-generic 6.2.6
Uname: Linux 6.2.0-20-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file.
.proc.driver.nvidia.capabilities.mig: Error: path was not a regular file.
.proc.driver.nvidia.gpus.0000.01.00.0: Error: path was not a regular file.
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 525.105.17 Tue Mar 28 18:02:59 UTC 2023
 GCC version: gcc version 12.2.0 (Ubuntu 12.2.0-17ubuntu1)
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Mon May 8 14:28:13 2023
DistUpgraded: 2023-04-20 10:00:59,509 DEBUG Running PostInstallScript: '/usr/lib/ubuntu-advantage/upgrade_lts_contract.py'
DistroCodename: lunar
DistroVariant: ubuntu
DkmsStatus: nvidia/525.105.17, 6.2.0-20-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 NVIDIA Corporation GA104M [GeForce RTX 3080 Mobile / Max-Q 8GB/16GB] [10de:24dc] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Lenovo GA104M [GeForce RTX 3080 Mobile / Max-Q 8GB/16GB] [17aa:3a58]
InstallationDate: Installed on 2023-02-09 (87 days ago)
InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020)
MachineType: LENOVO 82N6
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.2.0-20-generic root=UUID=2a43fd27-b65c-4d7a-bc19-b001521b0771 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to lunar on 2023-04-20 (18 days ago)
dmi.bios.date: 03/07/2023
dmi.bios.release: 1.60
dmi.bios.vendor: LENOVO
dmi.bios.version: GKCN60WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76461 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Legion 7 16ACHg6
dmi.ec.firmware.release: 1.60
dmi.modalias: dmi:bvnLENOVO:bvrGKCN60WW:bd03/07/2023:br1.60:efr1.60:svnLENOVO:pn82N6:pvrLegion716ACHg6:rvnLENOVO:rnLNVNB161216:rvrSDK0T76461WIN:cvnLENOVO:ct10:cvrLegion716ACHg6:skuLENOVO_MT_82N6_BU_idea_FM_Legion716ACHg6:
dmi.product.family: Legion 7 16ACHg6
dmi.product.name: 82N6
dmi.product.sku: LENOVO_MT_82N6_BU_idea_FM_Legion 7 16ACHg6
dmi.product.version: Legion 7 16ACHg6
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.114-1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.0.2-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 23.0.2-1ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.7-1ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1

[Tarassov Sergey (satarasov)]

Same for me, I see mutter-x11-frames VRAM usage inceases over time.
Laptop screen + external monitor used.

GTX 1650 Ti Mobile
Driver Version: 525.105.17
Ubuntu 23.04
Kernel: 6.2.0-20-generic
X11

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Peter de Kraker (peterdekraker)]

I have 3GB of GPU RAM usage by mutter-x11-frames (and my gpu only has 8GB total)
nvidia-smi:
```
 /usr/libexec/mutter-x11-frames 3348MiB
```
Ubuntu 23.04
Kernel 6.2.0-20-generic
Nvidia 530.41.03
GTX 3070 Ti
Desktop with one 4K screen, 200% scaling.

[Daniel van Vugt (vanvugt)]

Upstream thinks this should be fixed in mutter 44.1, but we're yet to confirm.

[Mateusz Łącki (mateusz-lacki)]

I have upgraded mutter to 44.1 from *-proposed repository. I have restarted my system. "GNOME version" is 44.1 in "Settings" (before restart it was 44.0). I have worked on the computer for a day after restart and this memory usage buildup does not occur. Actually, I do not see "mutter-x11-frames" listed in "nvidia-smi" at all. Previously they used up 1-2GB of VRAM out of my total 4GB.

[Daniel van Vugt (vanvugt)]

Great, thanks. It does sound like the change in 44.1 upstream mentioned was the fix.