On Jun 20, 2012 4:59 AM, "Joshua O'Leary" <<a href="mailto:joshua.oleary@btinternet.com">joshua.oleary@btinternet.com</a>> wrote: > > On 20/06/12 12:25, MR ZenWiz wrote: >> >> I recently upgraded my work desktop to use Xubuntu 12.04 (from Ubuntu >> 10.10, complete fresh install). >> >> This last Monday when I went in to work, all the machines were off (we >> had a power outage over the weekend) and I had shut mine down on >> Friday. >> >> However, when I booted the machine, lightdm was killed during the boot >> and it took me a reboot and some log scoping to figure out what >> happened. When I started lightdm from the console, everything went >> fine. >> >> I had to reboot again due to an update, and the same thing happened. >> >> What would kill lightdm during startup but allow it to run thereafter? >> >> Thanks. >> >> MR Zenwiz >> > You could try to reinstall lightdm, with "apt-get install --reinstall lightdm", as root. > If that still doesn't work, try removing it completely with "apt-get purge lightdm", then > "apt-get install xubuntu-desktop lightdm lightdm-gtk-greeter" > Also take a look at your system logs - run dmesg to view the kernel ring buffer, look at /var/log/syslog and also /var/log/lightdm/lightdm.log to see what is causing it to fail. /var/log/xorg.0.log may also be useful. > Unfortunately none of that worked. Lightdm still gets killed during startup, even after purge & reinstall. The logs contain nothing revealing, only that it was killed. No reason, no perp. It also shows gdm killed by TERM - same as lightdm.