[Bug 51420] Running any program in Wine causes 100% cpu usage in Xorg

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51420

--- Comment #35 from matt <gardotd426 at gmail.com> ---
(In reply to Sveinar Søpler from comment #34)
> Can't say i have ever experienced this, but i do not use a DVI monitor. Mine
> is DP on main, and HDMI on my second monitor.
> 
> Maybe it is some strange stuff with multi-monitors with one of them
> connected to DVI? I get around 1.3-2% 1-core load when running regedit.
> 
> RTX2070. Currently 470.62.13 driver, but did not have this with 495.44
> either.
> 
> If you wonder where that strange "falling back to randr 1.0" message comes
> from:
> https://github.com/wine-mirror/wine/commit/
> f5e6c086f91749e9e302c1abf858807535bc9775
> 
> Some of this is removed with the proton fshack patchset:
> https://github.com/ValveSoftware/wine/commit/
> 352b0304a357f9e062695c45ed12d74e0cfc70db
> 
> Not sure if it is related to this bug, but you mentioned the message.. and
> it is logged in wine logs and (should) not in Xorg.0.log.
> Perhaps try WINEDEBUG=-all,+xrandr ?
> 
> Normal log: 
> 0070:trace:xrandr:X11DRV_XRandR_Init Found XRandR 1.6.


Yeah as I said my theory is that it affects users with 2 monitors where one of
them is connected via DVI. The fact that you don't experience the bug seems to
bolster that theory a little bit more. 

My patch posted here has been confirmed to fix the issue (at least for one of
the users here who were affected), so while waiting for a true fix, anyone
affected can use my patch if they're building from source (or using something
like wine-tkg-git to build for them).

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