Activities overview / switching workspaces runs on low framerate (30fps) on NVIDIA + Wayland

[Triangle Stone]

(Bug report can also be found on https://gitlab.gnome.org/GNOME/mutter/-/issues/2247)

Details:

- Ubuntu 22.04 LTS
- GNOME Shell 42.0
- Bug happens on Wayland only
- Dell XPS with i9-9980HK (using the GTX 1650 mobile, since gnome runs very slow on integrated graphics)
- NVIDIA driver version 510.60.02
- Using internal monitor (4k) + two external 4k monitors

Summary:
The activity overview / the process of switching workspaces runs at half the normal framerate (30fps) when running NVIDIA on Wayland.

Steps to reproduce:
- Run Wayland and NVIDIA
- Open activity overview or switch workspaces
- Lament the framerate

What I expected to happen:
I expect the overview and workspace switching process to run at the framerate that matches the monitor refresh rate (60Hz).

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gnome-shell 42.0-2ubuntu1
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Tue May 3 08:23:29 2022
DisplayManager: gdm3
InstallationDate: Installed on 2021-11-08 (175 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
RelatedPackageVersions: mutter-common 42.0-3ubuntu2
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to jammy on 2022-04-29 (3 days ago)

[Daniel van Vugt (vanvugt)]

Thanks for the bug report.

Your Wayland configuration:

[ 585.472074] xps gnome-shell[96968]: Running GNOME Shell (using mutter 42.0) as a Wayland display server
[ 585.488739] xps gnome-shell[96968]: Device '/dev/dri/card0' prefers shadow buffer
[ 585.488856] xps gnome-shell[96968]: Added device '/dev/dri/card0' (nvidia-drm) using non-atomic mode setting.
[ 585.489653] xps gnome-shell[96968]: Device '/dev/dri/card1' prefers shadow buffer
[ 585.579241] xps gnome-shell[96968]: Added device '/dev/dri/card1' (i915) using atomic mode setting.
[ 585.612068] xps gnome-shell[96968]: Created gbm renderer for '/dev/dri/card0'
[ 585.650099] xps gnome-shell[96968]: Created gbm renderer for '/dev/dri/card1'
[ 585.650209] xps gnome-shell[96968]: Boot VGA GPU /dev/dri/card1 selected as primary

tells me this is a duplicate of bug 1970291.

[Launchpad Janitor (janitor)]

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