The issues appears that you have a ghost SDVO output detected. That was
fixed long ago.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/533312
Title:
[ubuntu karmic and lucid] unstable screen with intel video
Status in “xserver-xorg-video-intel” package in Ubuntu:
Fix Released
Bug description:
Binary package hint: xserver-xorg-video-intel
The displayed screen on my monitor is typically shifted down by some
16pixels : e.g. on the desktop the bottom panel disappears by about
half, and a black area of the same height appears at the top of the
screen. This appears to be related to the intel video graphic, as the
picture is unstable on two computers each using intel graphic and
running different versions of ubuntu, while the picture is rockstable
for days when the same monitor is used on computers with Nvidia card
or AMD onboard graphic .
The monitor is an IBM 14" (type 9514-B23) flat screen with native
resolution of 1024x768.
One of the problematic computers has the motherboard Intel D945GCLF2
(w. atom330). It is booted with either Karmic (default install) or
Lucid (default install) as well as an install with the latest DRM as
suggested by #13 in Bug #372575 (using
https://edge.launchpad.net/~apw/+archive/red ). The other computer is
a netbook Acer Aspire One 110L, running karmic (default install).
The picture can be restored by switching the monitor off and on. It
jumps back to the shifted screen after a time period ranging from 1
second to several minutes. It tends (but is not always so) to jump
sooner when a faster refresh rate is selected ( 75Hz faster than
70Hz, faster than 60Hz).
The monitor provides info about the video signal by its OSD; it says:
@1024x768 and 75Hz
H-Frequency: 60.18 kHz
C-Frequency 75.23 Hz
Sync Polarity H:+ V:+
The signal is the same before and after the jump. This identical
signal is reported when the nvidia card is connected, but I never
observed the jump with the nividia card.
[lspci]
00:00.0 Host bridge [0600]: Intel Corporation 82945G/GZ/P/PL Memory
Controller Hub [8086:2770] (rev 02)
Subsystem: Intel Corporation Device [8086:464c]
00:02.0 VGA compatible controller [0300]: Intel Corporation 82945G/GZ
Integrated Graphics Controller [8086:2772] (rev 02)
Subsystem: Intel Corporation Device [8086:464c]
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