On Acer Aspire 5920G after updating kernel 3.2.0-40 12.04 LTS Ubuntu-Studio I got the same problem and it still resists with the kernel -41. Before I made this update I had no problems with xfce-power-manager. I tried to solve it with this workaround, which doesn't solve the problem completely: http://d24m.de/2012/05/10/xubuntu-12-04-und-der-power-manager/ The power manager doesn't start automatically after processing this workaround, but I can start it now with a terminal or over Software=>Accessories=> Power-manager=>"will you start the power-manager", without the reported error message. The brightness control doesn't work as it should: no OSD is shown and there are no limits to the brightness regulation. Having the cairo dock installed it shows me, that it changes the gamma, too, if I change the brightness. This is a new behavior! I have version 1.0.11-0ubuntu2 installed.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/973778 Title: Unable to connect to Xfce Power Manager To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/973778/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs