[Bug 31972] 2.6.38.1: radeon hd 6870: kms, hdmi, signal is correct only for 1-2 seconds

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=31972





--- Comment #2 from Arkadiusz Miskiewicz <arekm at maven.pl>  2011-03-27 21:00:41 ---
Created an attachment (id=52212)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=52212)
dmesg with drm debug=1

Not a regression since 2.6.37 didn't support this card at all. 

Bad cable... I forgot to mention one important thing. Video card is not
connected directly to toshiba tv but through pioneer vsx-920-k amplifier. I
just did a test and connected directly to tv. The problem is gone.

So pioneer could be suspected for dirty games but there is no problem with
windows working in the same setup (I use 1920x1080 in windows; some gpu hungry
games like call of duty 4 etc work fine in this setup), so there is a chance
for a radeon drm bug.

dmesg with debug attached.

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