[Bug 82068] UXA regression causes BENQ FP747 screen to go berserk upon xrandr --auto

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82068

--- Comment #6 from jidanni at jidanni.org ---
Created attachment 103987
  --> https://bugs.freedesktop.org/attachment.cgi?id=103987&action=edit
after --auto

Well doing
xrandr --output VGA1 --auto; xrandr --verbose; xrandr --output VGA1; xrandr
--verbose
caused my screen to go berserk, and made to identical copies of output "BAD".
The second call didn't fix anything. All I could do was
switch to a tty and do systemctl stop nodm.service; systemctl start
nodm.service .
Then I did xrandr --output VGA1; xrandr --verbose, saving into "GOOD".
The primary difference is 48(GOOD) vs. 94(BAD):
$ sort BAD GOOD|uniq -u
  1280x1024 (0x48) 135.000MHz +HSync +VSync *current +preferred
  1280x1024 (0x48) 135.000MHz +HSync +VSync +preferred
  1280x1024 (0x94) 141.813MHz -HSync +VSync *current
  1280x1024 (0x94) 141.813MHz -HSync +VSync +preferred
VGA1 connected 1280x1024+0+0 (0x48) normal (normal left inverted right x axis y
axis) 338mm x 270mm
VGA1 connected 1280x1024+0+0 (0x94) normal (normal left inverted right x axis y
axis) 338mm x 270mm

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