[Bug 3731] Re: Xorg resolution falling back to 640x480 and/or 800x600 when h/v freqs incorrect

[Bryce Harrington]

Heya all,

I'm just surfacing to report some progress made on resolution detection
for Gutsy.  We've found a fix for a sub-class of this bug, for
situations involving LCDs with "analog" connections (I assume this is
VGA connections as opposed to DVI) where the highest (and most correct)
resolution gets lost.  This is bug 27667 and is due to poor logic in
xresprobe/ddcprobe.sh that mixes up CRTs and LCDs.  The logic is being
dropped, which will fix this bug.  There were also a couple other
logical errors which may have caused other related monitor resolution
mis-detections.

144956 also has a fix; it addresses an issue that cropped up after Tribe
5 for intel users that resulted in misdetected resolutions for some.
This was caused by a patch added in Tribe 5.  The patch will be dropped
to fix the issue.

For others experiencing this problem, a couple tips:  run ddcprobe to
see if it reports a series of timings for your monitor.  If it instead
returns "edidfail", you're seeing bug 94994.  If it returns a correct
list of resolutions, but the highest one is missing, and you're using an
LCD, then you're seeing bug 27667.  For everyone else, stay tuned...

-- 
Xorg resolution falling back to 640x480 and/or 800x600 when h/v freqs incorrect
https://bugs.launchpad.net/bugs/3731
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