[Bug 25307] radeon [9600AGP] screen temporarily fades to black (blinks / flickers) when rendering occurs

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25307





--- Comment #3 from evilcleric at gmail.com  2009-12-05 15:57:34 PST ---
(In reply to comment #2)
> I suspect it's an AGP mode problem.  Does changing the AGP mode help?  Try the
> following option in the device section of your xorg.conf:
> Option "AGPMode" "X"
> where X = 1 or 2 or 4 or 8
> Let me know which mode(s) work and the output of lspci -vnn and I'll add a
> quirk for your card.
> 
Alex,

I've conducted 40 reboots using the 4 "AGPMode" options: 1, 2, 4, 8 (10
attempts for each one).  The results are as follows.  

Option "AGPMode" "1"
results: 5 normal boots, 5 buggy ones

Option "AGPMode" "2"
results: 8 normal boots, 2 buggy ones

Option "AGPMode" "4"
results: 8 normal boots, 2 buggy ones

Option "AGPMode" "8"
results: 8 normal boots, 2 buggy ones

I've even conducted couple of unbuggy boots with an "AGPMode" "7" (which seems
to be strange to me)

Below I've attached my xorg.conf (just in case) and the output of lspci -vnn
you've requested.


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