[Bug 110659] pageflipping seems to cause jittering on mouse input when running Hitman 2 in Wine/DXVK with amdgpu.dc=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110659

--- Comment #34 from tempel.julian at gmail.com ---
Thank you for being still with me on this.

I've downgraded to stock packages provided by Arch stable repository, which is:
xorg-server 1.20.5
xf86-video-amdgpu 19.0.1
mesa  19.1.4
stock (read: no) xorg config
no custom kernel parameters (except of of disabling intel_pstate, see new
dmesg.log attached)

And I've also installed amd-staging-drm-next (6c7a8d5c0772) just like you.

But: The issue is unchanged. To further illustrate the issue, I've recorded a
capture of it in the game TESV: Oblivion in D9VK (no difference to WineD3D or
Gallium Nine regarding this issue).

The capturing process in OBS Studio via Xcomposite breaks pageflipping, but I
can turn it on again via TearFree which I enable via hotkey on the fly. The
result 100% matches running the game with modesetting DDX or amdgpu.dc=0 (no
spikes) vs. xf86-video-amdgpu + amdgpu.dc=1 (nasty spikes).

Hitman 2 is a bit different, as it doesn't show render spikes for me either (I
think I was first mistaken regarding that difference, sorry for the confusion),
but the mouse input just blocks/skips heavily and is even more unplayable than
Oblivion/Skyrim etc.

I was just writing this while I read your new reply. I'll gladly try what you
have suggested.

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