Poor performance with KDE 6 (Wayland) on AMD laptop

Help
,
1

After a bit of excitement for the new release, I enabled the arch testing repositories and upgraded to KDE 6. To my great dismay, however, I found the performance to be incredibly slow, which was strange considering that KDE 5 ran perfectly fine.

Using the “Show FPS” desktop effect, which I understand isn’t a benchmark but does give an idea of how good the performance of the renderer is, I found that it was locked to 30 FPS on wayland, with performance on X11 being slightly higher (35-40 FPS) but still undesirable.

This is a completely new install of Arch Linux, so I don’t think there is anything running that could bottleneck my system.

My system stats from kinfo are as such:

Operating System: Arch Linux
KDE Plasma Version: 6.0.0
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Kernel Version: 6.7.7-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 PRO 5675U with Radeon Graphics
Memory: 14.4 GiB of RAM
Graphics Processor: AMD Radeon Graphics

I’m wondering if this is something I did poorly on my end or a bug with KDE 6 on certain AMD gpus.

2

476860. It is marked as resolved but it is not. I have been continuing discussion on 477959 thread, but the issue is gone stale.

3

Thank you for linking those bug reports! Setting KWIN_DRM_NO_AMS=1 mostly fixed my performance, albeit it’s not at a perfect 60. I’ll continue to follow those two reports to see when the issue is finally fixed.

4

The bug, at least on my side, was fixed by this merge. On Arch, it’s been included in the latest version of plasma at time of writing.

3 Likes
5

Fixed on my Intel too!!

1 Like