ubuntu-x-swat team mailing list archive

[Brian Burch <brian@xxxxxxxxxxx>]

This is very frustrating because my changes have not been reproducible
because the monitor is too clever for its own good - it "auto-adjusts"
the image and apparently remembers the "optimal" alignment for that
particular resolution.

I've discovered (the hard way) that I can only be sure my test modelines
are being used is to wait until the desktop is painted with the new
modeline, then reset the display settings (monitor menu button ->
display -> reset display settings). This wipes the memory, BUT also re-
establishes the default wide mode of "fill". I then change it to use
verbatim presentation (monitor menu button -> display -> wide mode ->
1:1). Then, just to be paranoid, I reboot (because I can't logout
without getting the "NOUVEAU(0): failed to destroy server context"
hangup).

My best values at the moment are the monitor's own EDID modified by
(hSync + 48; hframe + 16):

  Modeline "2048x1152_BB"  156.75  2048 2144 2176 2224  1152 1155 1160
1185 +hsync -vsync

It isn't perfect because the image is clipped by a few pixels on the
left edge. However, I think this particular symptom is not directly
related to the modeline because I see it happening on all the lower
resolutions encountered during startup. e.g. the bios messages and the
initial kernel console messages, which use 4:3 resolutions.

(note: I'm doing all this work on karmic because I don't have enough
disk space to install lucid and I'm not sure how to use custom modelines
under the bootable CD system.)

-- 
Invalid EDID for Dell SP2309W in VGA mode
https://bugs.launchpad.net/bugs/563774
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-nouveau in ubuntu.