I reinstalled all my system (with update during the installation), and now I have the problem with each kernel...
I think this problem come from a change in the way to configure the kernels. This change should have happen in an update between the update for the kernel 3.5.0-19 and an update for the kernel 3.5.0-21. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1092968 Title: lost display configuration and unity by using the kernel 3.5.0-21 10 12.10 Status in “xorg” package in Ubuntu: Confirmed Bug description: When I am using the kernel 3.5.0-21, i lost my resolution and unity. I got the lower resolution possible. When I am loggin, i got a message telling me that the it is impossible to aplly the saved configuration for the screens (I do not know exactly the message in english, my version of ubuntu is in french) and a list of configuration that failed. I lost the unity interface, no dashboard, nothing just a desckop. Booting on the 3.5.0-19 version of the kernel (in GRUB) make the all system work normally To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1092968/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

