Public bug reported:
Binary package hint: xserver-xorg-video-intel
I have a gutsy system using the xserver-xorg-video-intel driver and
xrandr1.2 to do a dual-head configuration with a single desktop spanning
both monitors. Sometimes when I start up the system a single partial
line of pixels is drawn on the wrong monitor. That is, for about half to
two-thirds of a single line of pixels starting from the right of the
screen, the pixels that should be drawn on the external monitor are
drawn on the internal laptop display, and vice-versa. (You can tell this
because if you move windows around on one monitor the corrupted line on
the other monitor changes colour to match what ought to be drawn in the
corrupted line on the first monitor.)
I'll attach my xorg.conf. I enable the desktop-spanning with:
xrandr --output VGA --preferred
xrandr --output VGA --left-of LVDS
(for some bizarre reason it doesn't seem to be possible to do that in
xorg.conf itself.)
** Affects: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided
Status: New
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in dual head config a row of pixels is drawn on the wrong monitor
https://bugs.launchpad.net/bugs/134464
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