In my system vertical bar disappeared, but the screen now presents the type of glitches you casn see in the attached file. I have a radeon 6450 and the latest mir, xmir and kernel (as of 28/09/2013).
** Attachment added: "Desktop glitches" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1218815/+attachment/3846628/+files/Schermata%20del%202013-09-28%2009%3A16%3A43.png -- 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/1218815 Title: [radeon] Graphic glitches and screen corruption (vertical lines) on XMir surfaces only To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1218815/+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