| Summary: | X11 apps garbled rendering since KDE 6.0.4 | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | Lassi Väätämöinen <lassi.vaatamoinen> |
| Component: | wayland-generic | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED UPSTREAM | ||
| Severity: | major | CC: | nate |
| Priority: | NOR | ||
| Version First Reported In: | 6.0.4 | ||
| Target Milestone: | --- | ||
| Platform: | Neon | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed/Implemented In: | ||
| Sentry Crash Report: | |||
| Attachments: | Issue illustrated, confindential info striketrhough | ||
Can you try a different VM graphics driver? Many are unfortunately terribly bug-ridden. Ok, the Virtualbox graphics controllers tried: VMSVGA: garbled X apps, this was used for original report (but allows 3D acceleration) VBoxSVGA: X apps OK (not 3D acceleration) So, indeed seems to be related to Virtualbox graphics controller, but the issue definitely got worse and permanent, after upgrading from 6.0.3 to 6.0.4. Virtualbox host environment was unchanged. Yeah, there were some KWin changes that made use of new GPU features that unfortunately are broken with some VM drivers. I asked, and those changes are apparently not feasible to revert in KWin, so VM softwares will just need to fix their broken graphics drivers. > there were some KWin changes that made use of new GPU features
Any links to the changes? Just out of curiosity.
Looks like this would be working with the following combination: Virtualbox 7.0.18 KDE Plasma Version: 6.0.4 KDE Frameworks Version: 6.2.0 Qt Version: 6.7.0 Actually not. Worked for a couple of VM reboots, but got back at some point. So need to use VBoxSVGA. |
Created attachment 169266 [details] Issue illustrated, confindential info striketrhough SUMMARY X11 apps have permanently garbled output rendering since KDE 6.0.4. Prior KDE 6 versions had randomly momentarily same type of garbling, but it went away when the window was moved. STEPS TO REPRODUCE 1. Upgrade to 6.0.4 2. Start xeyes or xcalc OBSERVED RESULT Application output is garbled EXPECTED RESULT Output is fine SOFTWARE/OS VERSIONS Operating System: KDE neon 6.0 KDE Plasma Version: 6.0.4 KDE Frameworks Version: 6.1.0 Qt Version: 6.7.0 Kernel Version: 6.5.0-28-generic (64-bit) Graphics Platform: Wayland Processors: 4 × 11th Gen Intel® Core™ i7-11850H @ 2.50GHz Memory: 22,7 GiB of RAM Graphics Processor: SVGA3D; build: RELEASE; LLVM; Manufacturer: innotek GmbH Product Name: VirtualBox System Version: 1.2