The problem described by Matthew Tucker-Simmons, affect me too on an acer 5742 g notebook with intel/nVidia drivers (Optimus).
The bash is very slow and it take more than a second to type a letter in the search box. Moreover: when I use Gnome Shell and stast gnome monitor, a CPU core is always at 49%-50% Considering going back to 14.04 where everything was OK -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1386721 Title: Graphics Slow After Upgrade 14.04 - 14.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1386721/+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