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

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Comment # 63 on bug 106175 from
(In reply to Brandon Wright from comment #62)
> (In reply to tempel.julian from comment #61)
> > I just noticed that it works fine with xf86-video-amdgpu driver, but with
> > modesetting driver, xorg or the driver freezes when starting/logging in. Not
> > sure if this is related to latest 4.21-wip-changes or the cursor patch
> > though.
> I'm getting the modesetting freeze, too, on 4.20-rc3, so it's likely the
> cursor patch. I called it a "fix", in quotation marks for a reason. I've
> barely looked at the KMS/DRM stuff for an hour, so I have no clue what I'm
> doing. I just wanted to show the AMD guys that we have pinpointed the
> problem, give them something that we can confirm no longer produces the
> problem, and hope that they'd go ahead and do things correctly.

Probably easy to make the workaround only activate on xf86-video-amdgpu. I
luckily don't need the modesetting driver for anything that I'm aware off, what
do you guys use that driver for ? Is it for GPU switching?


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