Problem seems to be solved for now. After some reading on other fora, I uninstalled nouveau display driver (via softwarecentre) which was supposed to cause conflict with the Intel drivers, and therefore maybe also with radeon drivers http://lcardinaals.wordpress.com/2012/04/25/ubuntu-12-04-myunity/ http://thorwil.wordpress.com/2012/05/16/fun-with-graphics-card-drivers-in-ubuntu-12-04/ But I also received some xorg related updates.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1010438 Title: xorg crashed during play of firefox embedded flash movie To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1010438/+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