I'm affected by this bug after upgrading Kubuntu Oneiric to Precise by changing every "oneiric" occurrence to "precise" in sources.list and then running a dist-upgrade (because my environment was not triggering an available upgrade notification).
Something weird has happened in PAM, since it's trying to look for my user with a wrong uid.
I can login with "startx /usr/bin/startkde" only, but then I would get authentication failures everywhere I'm asked to input my password for root privileges, unless I run the same commands from terminal with sudo.
I'm affected by this bug after upgrading Kubuntu Oneiric to Precise by changing every "oneiric" occurrence to "precise" in sources.list and then running a dist-upgrade (because my environment was not triggering an available upgrade notification).
Something weird has happened in PAM, since it's trying to look for my user with a wrong uid.
I can login with "startx /usr/bin/startkde" only, but then I would get authentication failures everywhere I'm asked to input my password for root privileges, unless I run the same commands from terminal with sudo.
I wrote in the Kubuntu forums: http:// www.kubuntuforu ms.net/ showthread. php?58623- Can-t-login- via-KDM- after-upgrading -to-Precise
German forum with same problem: http:// forum.ubuntuuse rs.de/topic/ kein-login- in-kdm- nach-upgrade/ #post-4316707
Debian bug related: http:// bugs.debian. org/cgi- bin/bugreport. cgi?bug= 440096
Please, tell me if you need more information.