similar bug here, originally I thought it was due to nvidia graphic card
driver but this is not the issue at fault
--
When logging on power manager fails
https://bugs.launchpad.net/bugs/563862
You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed
also this does not effect my m1330 but does effect my dimension e520
--
When logging on power manager fails
https://bugs.launchpad.net/bugs/563862
You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu.
--