https://bugs.freedesktop.org/show_bug.cgi?id=32732

--- Comment #6 from Alex Deucher <[email protected]> 2011-01-03 09:59:42 PST ---
If the patch doesn't help, please try the following using avivotool
(http://cgit.freedesktop.org/~airlied/radeontool/) as root:

avivotool regmatch 0x7d08
avivotool regmatch 0x7d14
avivotool regmatch 0x7d20
avivotool regmatch 0x7d2c

and make sure bit 28 is set for each of them.

Then, plug a monitor into the hdmi port and run:

avivotool regmatch 0x7d00
avivotool regmatch 0x7d0c
avivotool regmatch 0x7d18
avivotool regmatch 0x7d24

then unplug it and and run the same commands again and see which, if any of
them changed. bit 1 should change when you plug and unplug the monitor. Then
repeat the same test for the DVI port and report back your findings.

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