Please note that there is a dot at the end. To disable gdm from running during boot, you can either boot with the ' text' boot parameter or disable the rc service like this: If gdm is completely locking up your system during boot up, then see the next options. This option is appropriate if your system boots up okay other than X, such that you can either ssh into it or access a tty. Switch to a tty (ctrl+alt+F1) or use ssh, log in, and shut off GDM for the current session like this:Ĭheck to see if you have any remaining X sessions running, and if so, kill them:īryce 5379 0.0 0.0 1784 552 pts/35 S+ 03:10 0:00 grep /usr/bin/X You can set up gdm to automatically log in a user either via System > Administration > Login Window > Security > Enable Automatic Login, or by editing the /etc/gdm/gdm.conf configuration file, and set AutomaticLoginEnable=true and AutomaticLogin=. This will try to start X and log some information about the active screen resolution to the file xrandr.log before it stops X again. Xinit -e 'sh -c 'xrandr -verbose > xrandr.txt' ' You can grab xrandr data without starting an X session like this: At the CD boot menu, add 'text' to the boot options: ģ. Obtain a Live CD for the release you're testing: ġ. LiveCD environments can usually be helpful for testing, but if you're troubleshooting a problem where X does not start up, that makes it difficult to retrieve the log files and other such things.

Ubuntu mate auto login