Bug 27230

Summary:	[105M / Acer] Bad EDID causes nouveau to fail on Acer Extensa 5635G laptop
Product:	xorg	Reporter:	Christopher James Halse Rogers <chalserogers>
Component:	Driver/nouveau	Assignee:	Nouveau Project <nouveau>
Status:	RESOLVED FIXED	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium	CC:	igadmile, piotrdrag
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Christopher James Halse Rogers 2010-03-21 15:05:17 UTC

Forwarded from launchpad: https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/540632

Nouveau fails to drive the LVDS screen of an Acer Extensa 5635G laptop.  This seems to be due to the laptop having a corrupt EDID.

The latest nvidia beta drivers seem to have a quirk for it, and there's a corrected EDID available here: http://www.nvnews.net/vbulletin/showpost.php?p=2167144&postcount=13

Xorg log: http://launchpadlibrarian.net/41226284/Xorg.0.log
dmesg: http://launchpadlibrarian.net/41226414/dmesg

Comment 1 Piotr Drąg 2010-03-24 08:36:02 UTC

IANAXD (I Am Not A X Developer), but these patches *might* fix this:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7064fef56369c9e2c6e35ff6d6b4b63d42a859ce (upstream since 2.6.32)

http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commit;h=44fef22416886a04d432043f741a6faf2c6ffefd (pending upstream, probably will go to 2.6.35)

Comment 2 Christopher James Halse Rogers 2010-03-25 15:31:42 UTC

Thanks for that pointer; the second patch does fix it for the reporter.

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