| Bug ID | 106175 |
|---|---|
| Summary | amdgpu.dc=1 shows performance issues with Xorg compositors when moving windows |
| Product | DRI |
| Version | unspecified |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/AMDgpu |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | tempel.julian@gmail.com |
Created attachment 138987 [details]
dmesg
When amdgpu.dc=1 and an Xorg compositor are enabled at the same time, there is
stuttering when moving windows.
It's most visible with Compton (which is completely stutter-free when
amdgpu.dc=0), but also KWin and to a lesser extent also Gnome-Mutter.
It happens also with GPU clocks forced to maximum, so it doesn't seem to be a
powersaving issue.
In the recent past, there was an issue with performance degrading when
amdgpu.dc=1 and an Xorg compositor are enabled and the hardware mouse cursor
was used, maybe it's still related (just guessing though)?
Tested with Linux 4.17 RC1 and drm-next-4.18-wip (4.16.1.52132fd03)
xorg-server 1.19.6+13+gd0d1a694f (amdgpu DDX & modesetting)
RX 560
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