[Bug 27644] radeon KMS causes corrupt VGA output on X1400

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #11 from Oliver Joos <oliver.joos at freenet.ch> 2011-01-27 11:03:36 PST ---
Seems I have the same problem with an ATI X600 (chipset RV380) in my laptop HP
Compaq nx8220. Same symptoms and the kernel parameters "radeon.modeset=0
vga=771" also fixed it finally, whereas "radeon.new_pll=0" alone did not help
(another dozen of googled suggestions failed too. So many thanks for this
hint!)

My graphics adapter:
01:00.0 VGA compatible controller: ATI Technologies Inc M24 1P [Radeon Mobility
X600]

I use Ubuntu Lucid with kernel 2.6.35-23 and disabled KMS ever since, because
with KMS overlay video playback is not possible anymore and textured video
playback shows artifact (looks like a diagonal edge of an OpenGL triangle not
drawn correctly synchronized with vsync. But thats another bug...).

If I can help with further data or tests, then please just ask.

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