Bug 507901

Summary:	RetroArch freezes on Wayland 1.24.0
Product:	[Plasma] kwin	Reporter:	nf.pereira
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	contact
Priority:	NOR
Version First Reported In:	6.4.3
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description nf.pereira 2025-08-05 14:08:49 UTC

SUMMARY
RetroArch freezes on Wayland 1.24.0 when using the Vulkan driver.

The menu is almost completely frozen. It only updates when I press a keyboard button. If I move the mouse over the window, it renders smoothly at full framerate.

Things to note:
- This does not happen on GNOME on a similar Arch system also running Wayland 1.24.0
- Downgrading the Wayland package to 1.23.1 fixes the issue
- Happens on both AMD and Intel GPUs
- Only happens when using the Vulkan driver. OpenGL works fine.

The reason I believe this might be a KDE issue is because a user with an up to date Arch, also on Wayland 1.24.0 is not able to reproduce the issue on GNOME.

Here is the link to the RetroArch issue with more details:
https://github.com/libretro/RetroArch/issues/18148

STEPS TO REPRODUCE
1. Open RetroArch on KDE Plasma running on Wayland
2. Change the video driver to Vulkan
3. Close and reopen RetroArch to observe the bug

SOFTWARE/OS VERSIONS
Linux: 6.15.9
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1

Comment 1 nf.pereira 2025-08-08 00:16:25 UTC

It was a RetroArch problem after all, so I'm closing this bug.