Okay, I did a few more tests... - the external monitor is connected at boot time, I disconnected it when the login screen is displayed, logged in, no high cpu usage
- logged out, connected the monitor, logged in, HIGH CPU USAGE - logged out, disconnected the monitor, logged in, no high cpu usage So, up to and including LightDM's login screen, everything is fine. (The date/time indicator on the login screen pops up the calender immediately for example; when I'm logged into Unity with high cpu usage, the calender only pops up in super slow motion.) When I log into Unity and the external monitor is connected at the time, I get high cpu usage. When I log into Unity with the monitor disconnected, I do not get high cpu usage. When I connect the monitor once Unity is up, everything works fine, too. BTW, I also have KDE Plasma Workspaces installed, and I don't see any signs of high cpu usage or graphical slowdowns when I log into that one, even when the external monitor is connected the whole time. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1222602 Title: [regression] [gen3] Mesa 9.2 makes Unity unusable on Atom class hardware and 943/945 graphics controllers To manage notifications about this bug go to: https://bugs.launchpad.net/mesa/+bug/1222602/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
