Did you already test the kernel as of point 1 in comment 11 above? Now that you have your working Beta installed, start with updating the kernel and reboot to see if it breaks. Then do -ati/-radeon, xorg- server-core and mesa packages as before.
If we rule out all the graphic driver packages (including kernel), we will have to look at packages like plymouth which might affect how the graphics is initialized. Once the system is broken, we will hopefully know exactly which package broke it. To further diagnose the problem, some tricks on https://wiki.ubuntu.com/X/NonGraphicalBoot can be useful, like the "Booting LiveCD Without X" section which also applies to an installed system. (Note that the "Bypassing/Disabling gdm" section is outdated now that we use upstart instead of init/rc scripts.) -- [RV350] Desktop corruption – Screen only shows vertical bands https://bugs.launchpad.net/bugs/643118 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in ubuntu. _______________________________________________ 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
