From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 82781] Option to disable mclk reclocking with AMD R9 280X
(TAHITI) to avoid screen flickering on VGA/CRT
Date: Tue, 19 Aug 2014 19:12:23 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=82781
--- Comment #12 from Alex Deucher ---
I'm not sure what's going on. Maybe a gcc bug? Can you try a modeline with a
longer vblank period? E.g.,
xrandr --newmode 1600x1200_gtf 234.76 1600 1720 1896 2192 1200 1201 1204
1260 -HSync +Vsync
xrandr --addmode DVI-0 1600x1200_gtf
xrandr --output DVI-0 --mode 1600x1200_gtf
or
xrandr --newmode 1600x1200_cvt 235.00 1600 1728 1896 2192 1200 1203 1207 1262
-hsync +vsync
xrandr --addmode DVI-0 1600x1200_cvt
xrandr --output DVI-0 --mode 1600x1200_cvt
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