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[Thomas Dreibholz <dreibh@xxxxxxxxxxxxxx>]

I can confirm the same problem on my ThinkPad W500 using the internal
Intel graphics. After an upgrade to the latest version of x11-common,
the X11 server becomes unusable when started. Restarting (even after
removing batteries and AC adapter) does not solve the problem. Going to
a console login is not possible, since the graphics output is completely
garbled. SSH to the system remained possible, so that I have been able
to downgrade to 7.4+3ubuntu7. Since that, the system again works as it
should.

The importance of this bug should be set to the highest priority, since
this bug makes a system unusable.

** Changed in: xorg-server
       Status: New => Confirmed

-- 
Garbled screen after updating x11-common
https://bugs.launchpad.net/bugs/490922
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Support, which is the registrant for Mactel Support.

Status in Mactel Support: New
Status in X.Org X server: Confirmed
Status in “xorg” package in Ubuntu: Confirmed

Bug description:
Binary package hint: xorg

I installed all available updates for Ubuntu 9.10 on my MacBook 2,1 today. After a reboot, the login screen was garbled (see attached photo). Using "ps aux" I was able to decode the error message that was supposed to be shown in the garbled window: "Failed to load module i810 (module does not exist, 0)"

Console screens were affected as well, probably even worse. On the X11 screen, I can still move the mouse and click on things. Terminal screens show a garbled cursor (no photo, sorry) - no other output is reported (blindly logging in an typing "sudo reboot" is possible though).

I fixed this by logging in via SSH and downgrading the Package x11-common from 7.3+3ubuntu10 to 7.4+3ubuntu7 (the only alternative available in aptitude).

Description:    Ubuntu 9.10
Release:        9.10

(the following shows my system with the downgraded package)
x11-common:
  Installiert: 1:7.4+3ubuntu7
  Kandidat: 1:7.4+3ubuntu10
  Versions-Tabelle:
     1:7.4+3ubuntu10 0
        500 http://de.archive.ubuntu.com karmic-updates/main Packages
 *** 1:7.4+3ubuntu7 0
        500 http://de.archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status