[Jaunty] Screen image jumps on boot and in OS

[LinuxChristian]

Binary package hint: xorg

The screen flickers/jumps both when Ubuntu is booting and in the OS itself. It looks like the screen image jumps a cm up and then down again every ½ second. Sometimes it helps rebooting and sometimes not (it doesn't happen every time I boot) . It also looks like it stops when the CPU works hard on something. I also found the bug #445379 talking about something simulare, but there isn't a lot of info in the report. I also get black screen for about 2 sec. and then its back to normal.

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: fglrx
Package: xorg 1:7.4~5ubuntu18
ProcEnviron:
 LANG=da_DK.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.28-15-generic (buildd@yellow) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #52-Ubuntu SMP Wed Sep 9 10:48:52 UTC 2009
SourcePackage: xorg
Uname: Linux 2.6.28-15-generic x86_64

[LinuxChristian (linuxchristian-deactivatedaccount)]

I can see the bug has been moved to the fglrx-installer section but it also happend when I used the open source driver.
I have to say that I have had more flicker in the OS now that I have changed to the ATI driver. It is another kind of flicker. The image on the screen doesn't jump but the image flickers like a bad connection in the cables (but the isn't one).
So the problem can't be fglrx specific but must be from a subsystem that both the open source and ATI driver uses.

[LinuxChristian (linuxchristian-deactivatedaccount)]

I found the problem! Apparently my motherboard has some design flaw. I have a Gigabyte GA-MA780G-UD3H.
I read that it helps to Onboard VGA Output Support option in the Advanced section of the bios and set it to D-Sub/HDMI, but I have not tried it yet myself.

So no software problem. Bug closed.

[Bryce Harrington (bryce)]

[This is an automatic notification.]

Hi LinuxChristian,

This bug was reported against an earlier version of Ubuntu, can you
test if it still occurs on Lucid?

Please note we also provide technical support for older versions of
Ubuntu, but not in the bug tracker. Instead, to raise the issue through
normal support channels, please see:

    http://www.ubuntu.com/support

If you are the original reporter and can still reproduce the issue on
Lucid, please run the following command to refresh the report:

  apport-collect 456204

If you are not the original reporter, please file a new bug report, so
we can work with you as the original reporter instead (you can reference
bug 456204 in your report if you think it may be related):

  ubuntu-bug xorg

If by chance you can no longer reproduce the issue on Lucid or if you
feel it is no longer relevant, please mark the bug report 'Fix Released'
or 'Invalid' as appropriate, at the following URL:

  https://bugs.launchpad.net/ubuntu/+bug/456204

[LinuxChristian (linuxchristian-deactivatedaccount)]

This bug can be closed because the problem is an error on my motherboard and not in Ubuntu. The problem is also on Windows.

[Bryce Harrington (bryce)]

[From reporter's comment it sounds like this is now fixed. If not, please reopen with clarification.]