Nothing in /var/log/syslog and .xsession-errors I'm using fglrx drivers (7.0.0-8.25.18+2.6.15-1) I've changed the /etc/gdm/gdm.conf-custom and added «AlwaysRestartServer=true» and it's now working. -- "white" gdm freeze on logout https://launchpad.net/bugs/48974