Comment 0 for bug 2004532

Snap packages which use hardware accelerated graphics are broken after the last routine system upgrade via apt. My system is using AMD Radeon RX 5500 XT graphics card from ASUS, with stock amdgpu kernel drivers. Two snap packages which are now unusable are Mozilla Firefox and Chromium browsers. Both display animated speckled color garbage inside their windows, overlayed with the correct image. Disabling hardware acceleration in the settings for the snap version of Firefox fixed it. Also, Firefox version installed from the original Mozilla tarball into /opt/ works just fine with the acceleration enabled on the same system, as well as glmark2 benchmark. Looks like the issue is only affecting snap packages.

$ snap list firefox chromium
Name Version Rev Tracking Publisher Notes
chromium 109.0.5414.119 2295 latest/stable canonical✓ -
firefox 109.0.1-1 2311 latest/stable mozilla✓ -

$ dpkg -l snapd|grep ^ii
ii snapd 2.58+22.10 amd64 Daemon and tooling that enable snap packages

$ dpkg -l mesa\* | grep ^ii
ii mesa-utils 8.5.0-1 amd64 Miscellaneous Mesa utilities -- symlinks
ii mesa-utils-bin:amd64 8.5.0-1 amd64 Miscellaneous Mesa utilities -- native applications
ii mesa-va-drivers:amd64 22.2.5-0ubuntu0.1 amd64 Mesa VA-API video acceleration drivers
ii mesa-vdpau-drivers:amd64 22.2.5-0ubuntu0.1 amd64 Mesa VDPAU video acceleration drivers
ii mesa-vulkan-drivers:amd64 22.2.5-0ubuntu0.1 amd64 Mesa Vulkan graphics drivers

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.10
Release: 22.10
Codename: kinetic

$ uname -a
Linux xxxxxx 5.19.0-29-generic #30-Ubuntu SMP PREEMPT_DYNAMIC Wed Jan 4 12:14:09 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: snap (not installed)
ProcVersionSignature: Ubuntu 5.19.0-29.30-generic 5.19.17
Uname: Linux 5.19.0-29-generic x86_64
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Wed Feb 1 22:55:48 2023
InstallationDate: Installed on 2020-08-02 (913 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: snap
UpgradeStatus: Upgraded to kinetic on 2023-02-02 (0 days ago)