[Expired for mutter (Ubuntu) because there has been no activity for 60
days.]
** Changed in: mutter (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/2023776
Title:
Ubuntu 23.04 + Gnome + Nvidia 525 + Vsync = low fps in Xorg sessions
Status in mutter package in Ubuntu:
Expired
Bug description:
Currently using Nvidia driver 525, which is the "tested" and
recommended driver according to Ubuntu's additional driver tool (as of
this writing).
- manually resizing "files" windows = low fps and a little bit of
pixelation
- moving windows around = drop in fps every now and then
- opening the Gnome overview = sometimes buttery smooth 60fps but
sometimes stuttery low fps that takes time to "catch up" to smoothness
again
- resizing Chromium or Firefox window = low fps, glitchy window
behaviour etc.
How to fix it? Well, this is what I found works thus far:
- disable both "vsync" and "allow flipping" in Nvidia-settings
- now everything is buttery smooth again; all animations, apps, games
and more
- doing this will introduce lots of tearing on the Gnome desktop and
applications though
- then force full composition pipeline to get rid of the tearing by
adding this start-up line to Ubuntu's start-up applications: nvidia-
settings --assign CurrentMetaMode="nvidia-auto-select +0+0
{ForceFullCompositionPipeline=On}"
- Use Wayland alternatively: Wayland doesn't have any of these issues
at all, it's a buttery smooth fully vsynced experience ootb, but a
bunch of new problems arise instead: Can't set global hotkeys for
recording in OBS, OBS recording performance is pretty bad, Gnome
folder windows start flickering somestimes, Gnome windows glitch out
when trying to resize them manually, Steam flickering sometimes,
browsers such as Firefox and Chromium have to be set to Wayland mode
in order to solve stuttering video playback issues, Nvidia-settings is
missing a bunch of settings and features when compared to X11... and
more
Hard- and Software:
- Ubuntu 23.04
- Nvidia driver version 525 (tested) from Ubuntu's additional drivers tool
- Core i7 7700
- 32 GB DDR4 RAM
- Lenovo Nvidia RTX A2000 workstation GPU
- TWO fullHD monitors connected via display port
ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: gnome-shell 44.1-0ubuntu1
ProcVersionSignature: Ubuntu 6.2.0-20.20-generic 6.2.6
Uname: Linux 6.2.0-20-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Jun 14 14:58:08 2023
DisplayManager: gdm3
InstallationDate: Installed on 2023-05-20 (24 days ago)
InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418)
ProcEnviron:
LANG=de_DE.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 44.1-0ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
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