Bug 21460

Summary:	[GM965 KMS] KMS produces garbage in combination with tiling
Product:	xorg	Reporter:	Martin <bugs>
Component:	Driver/intel	Assignee:	Gordon Jin <gordon.jin>
Status:	RESOLVED DUPLICATE	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium
Version:	7.4 (2008.09)
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Martin 2009-04-28 04:22:30 UTC

Xorg intel driver:2.7.0
kernel: 2.6.29.2.
chipset: GM965

When I use the above configuration, X shows garbage instead of normal greeter at startup. X does not hang and the interface is usable as long as I'm able to guess where to click. The garbage has a partly horizontal shifted/skewed character, and in general the placing resembles the original position more or less, does that make ANY sense?). If I disable Tiling in xorg.conf (Option "Tiling" "false") X is usable again.

Comment 1 Martin 2009-04-28 04:29:07 UTC

Another way to describe the garbage I can think of is "Ghosting", because lines are shifted horizontally, I see several ghosts of the visual elements.

Comment 2 Gordon Jin 2009-04-28 06:11:01 UTC

You need an additional kernel patch.

*** This bug has been marked as a duplicate of bug 21246 ***

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