Xorg/GNOME applications slow after upgrade (intermittent)

[Gonzalo Garramuno]

This was already reported and a bug fix was placed (bug #2061137 and bug #2059847). However, the latest upgrade to Ubuntu once again shows the problem.

The problem does not show with the Terminal, but it shows on Emacs (slow to type characters) and on my own application (slow redrawing of

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 6.5.0-18.18~22.04.1-generic 6.5.8
Uname: Linux 6.5.0-18-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.0000.09.00.0: 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 535.171.04 Tue Mar 19 20:30:00 UTC 2024
 GCC version: gcc version 12.3.0 (Ubuntu 12.3.0-1ubuntu1~22.04)
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
BootLog: Error: [Errno 13] Permiso denegado: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed May 15 13:31:35 2024
DistUpgraded: Fresh install
DistroCodename: jammy
DistroVariant: ubuntu
DkmsStatus:
 nvidia/535.171.04, 6.5.0-18-generic, x86_64: installed
 nvidia/535.171.04, 6.5.0-35-generic, x86_64: installed
ExtraDebuggingInterest: No
GraphicsCard:
 NVIDIA Corporation GA102 [GeForce RTX 3080 Lite Hash Rate] [10de:2216] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Gigabyte Technology Co., Ltd GA102 [GeForce RTX 3080 Lite Hash Rate] [1458:404b]
InstallationDate: Installed on 2023-03-13 (428 days ago)
InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223)
MachineType: Gigabyte Technology Co., Ltd. B450M DS3H WIFI
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.5.0-18-generic root=UUID=c818488b-5ecb-4753-90ba-6dcfb95c3ed3 ro quiet splash
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/20/2022
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: F64d
dmi.board.asset.tag: Default string
dmi.board.name: B450M DS3H WIFI-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: Default string
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrF64d:bd07/20/2022:br5.17:svnGigabyteTechnologyCo.,Ltd.:pnB450MDS3HWIFI:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB450MDS3HWIFI-CF:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring:
dmi.product.family: B450 MB
dmi.product.name: B450M DS3H WIFI
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.113-2~ubuntu0.22.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.2.1-1ubuntu3.1~22.04.2
version.libgl1-mesa-glx: libgl1-mesa-glx 23.0.4-0ubuntu1~22.04.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.4-2ubuntu1.7~22.04.10
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2ubuntu1
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

[Gonzalo Garramuno (ggarra13)]

Here's a movie showing the behavior on my program when clicking on an FLTK tree and the slowdown on emacs when typing on a long emacs C++ file. The problem is not on FLTK or Emacs as the code was working fine before (and Wayland or XWayland has no issues):

https://mega.nz/file/qPoV2S5A#qdytFYmZthwIfis2JE9BNXWJd1oc6CXA7n-ruEL98YY

[Daniel van Vugt (vanvugt)]

Yes this was a regression that occurred in https://launchpad.net/ubuntu/+source/mutter/42.9-0ubuntu7.1 relative to the PPA which contained the fix. But it's still bug 2059847 that's unresolved in 22.04.