I also tried to install the xserver-xorg-video-modesetting, and now in the xorg log I have
gilles@MacUbuntu:~$ cat /var/log/Xorg.0.log | grep EE (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 1154.644] Initializing built-in extension MIT-SCREEN-SAVER [ 1154.656] (EE) Failed to load module "fglrx" (module does not exist, 0) [ 1154.688] (EE) Failed to load module "fglrx" (module does not exist, 0) [ 1154.727] (EE) open /dev/dri/card0: No such file or directory [ 1154.727] (EE) open /dev/dri/card0: No such file or directory [ 1154.728] (EE) open /dev/dri/card0: No such file or directory [ 1154.728] (EE) open /dev/dri/card0: No such file or directory [ 1154.729] (EE) Screen 0 deleted because of no matching config section. [ 1154.729] (EE) Screen 0 deleted because of no matching config section. [ 1154.729] (EE) Screen 0 deleted because of no matching config section. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1116633 Title: black screen in the login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1116633/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs