xssesion-errors:
Xlib: extension "GLX" missing on display ":0".
Xlib: extension "GLX" missing on display ":0".
openConnection: connect: No such file or directory
cannot connect to brltty at :0
upstart: gnome-session (Unity) main process (2393) terminated with status 1
upstart: unity-settings-daemon main process (2383) killed by TERM signal
upstart: logrotate main process (2078) killed by TERM signal
upstart: update-notifier-crash (/var/crash/_sbin_upstart.108.crash) main process (2132) killed by TERM signal
upstart: update-notifier-crash (/var/crash/_usr_bin_appstreamcli.0.crash) main process (2137) killed by TERM signal
upstart: update-notifier-crash (/var/crash/_usr_bin_compiz.999.crash) main process (2143) killed by TERM signal
upstart: Disconnected from notified D-Bus bus
upstart: bamfdaemon main process (2162) killed by TERM signal
upstart: unity-panel-service main process (2398) killed by TERM signal
upstart: unity7 main process (2387) killed by SEGV signal
upstart: job indicator-bluetooth failed to stop