er, that first command should be "sudo dpkg-reconfigure gdm".

On 12-10-11 03:00 PM, Shawn wrote:
You are getting past the boot sequence and then encountering problems
with the desktop environment.  I've seen this sort of thing before. Most
recently I just updated to the latest version (12.04) on a separate hard
drive.  In the past, I would delete the xorg.conf file (rename it
really) and let the system recreate it.

At the very least, you should be able to do CTRL-ALT-F1 (twice) to get
to a command prompt.  There you can do everything you need.  You might
try to simply restart the graphical environment:

   sudo /etc/init.d/gdm restart

(if you are using KDE and the KDE login window, then replace "gdm" with
"kdm")

I haven't had to mess with the X-Server config for quite some time, so
I'm not sure what Ubuntu is doing there these days.  But, in the past I
would do

   sudo dpkg-reconfig gdm

(or "kdm" for the KDE users)  This would often fix the graphical
environment.

Hope that helps.

Shawn

On 12-10-11 02:38 PM, Richard Carter wrote:
Thanks for the tip.  I checked the apt history but nothing seemed amiss.
  But I didn't really know what to look for.

Robin

On Thu, Oct 11, 2012 at 1:51 PM, Dafydd Crosby <[email protected]
<mailto:[email protected]>> wrote:

    Hmm, you might want to check your apt history to see if something
    got updated in the background that is causing the problem.

    -Dafydd


    On 10/11/2012 12:06 PM, Richard Carter wrote:

        This morning for the first time ubuntu 12.04 LTS wouldn't start.
           Here are the details.

        My desktop PC has 2 drives: a 500GB HD and a 256GB SSD.  Ubuntu
        12.04 is installed on the SSD and Debian 6.0  is installed on
        the HD.  Up until now both worked well: Debian still works well.

        When I boot to Ubuntu the system gets to the point where the
        wallpaper to be used for the desktop is displayed together with
        a small window asking for user name and password.  When I enter
        the password I get the message ' Failed to load session
        "cairo-dock" ' and a log out button is displayed.  I get the
        same response when I try the other log in options available in
        the small window.

        I then started in recovery mode and tried: fsck, clean, dpkg(fix
        broken packages) and grub(update boot loader).  None of these
        had any effect.

        I would be grateful for advice.

        Robin



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