https://bugs.freedesktop.org/show_bug.cgi?id=112266

--- Comment #9 from Jan Kowalski <5lac7wa43@protonmail.com> ---
I had this bug on tested kernels: 5.3.8, 5.3.9, 5.4.0-rc6, 5.4.0-rc7. I can
confirm hangs occurred, when the cursor was moved after some time of inactivity
(10-60 sec, depending on kernel version. 5.4.0-rc6 was the worst) in Firefox
when watching fullscreen video (excluding 5.4.0-rc7), or in games. This bug was
accompanied by another one - sluggish cursor, in 5.3 line with screen
flickering at the cursor position, in 5.4 line barely visible, occurring every
few seconds but without screen flickering, and feels inaccurate.

I added this patch https://bugs.freedesktop.org/attachment.cgi?id=145971 on top
of 5.4.0-rc7 and hangs are gone (thanks), but laggy cursor is still there.

Sapphire Pulse RX 5700 XT
Dell U2311Hb, 1920x1080 60.00Hz
Kernel: 5.4.0-rc7
Mesa: 19.3.0-rc2
llvm: 9.0.0

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