bad Utopic update?

Adam Dingle adam at
Fri Aug 29 18:20:47 UTC 2014

OK - I just ran 'sudo restart lightdm' and the login screen appeared and I
was able to log in!  Yes, magic.  Thanks for the suggestion!


On Fri, Aug 29, 2014 at 2:16 PM, Kai Mast <mail at> wrote:

> Just an idea: Sometimes "sudo restart lightdm" magically fixes such
> problems.
> Kai
> On Fri, Aug 29, 2014 at 2:13 PM, Adam Dingle <adam at> wrote:
> I normally run Ubuntu 14.10 (Utopic) - it has been quite stable for months
> now.  This morning I applied software updates as usual, attempted to reboot
> and saw a blank black screen with a mouse cursor and nothing more.  I used
> Ctrl+Alt+F1 to switch to a console and logged in.  As I did so, I saw these
> messages:
> [544.201533] system-logind[925]: Failed to start unit user at 1000.service:
> Unknown unit: user at 1000.service
> [544.201586] system-logind[925]: Failed to start user service: Unknown
> unit: user at 1000.service
> 'ps -ef' showed that the X server was running.  I didn't attempt to debug
> much further - I needed a working machine, so I made a fresh overinstall
> from a daily ISO of 14.10.  That worked for a few hours, but then after
> another reboot I was stuck at a blank screen again.
> Has anyone else seen this?  I think I'll have to drop back to Trusty until
> this can be fixed.  Thanks -
> adam
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