[Bug 106175] amdgpu.dc=1 shows performance issues with Xorg compositors when moving windows

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106175

--- Comment #48 from tempel.julian at gmail.com ---
With amdgpu.dc=0, TearFree works as expected for me (no tearing without
compositor, scrolling in Firefox windowed is free of stutter, no issues with
compositor vsync either).

I think we should leave TearFree out of this as it's entirely unrelated, apart
from the fact that it forces pageflipping.

Regarding the original issue with amdgpu.dc=1:
Still totally unchanged for me with latest stable versions and also 4.21-wip,
llvm-svn, mesa-git, libdrm-git, xorg-server 1.20.3 and modesetting /
xf86-video-amdgpu-git on Arch.

I'm getting an Asus Vega 56 Strix card tomorrow, which I will try instead of my
current MSI Aero RX 560 card. But since there were already reports for Vega,
I'm not hopeful.

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