Before gdm login prompt press Ctrl-Alt-F2. Login to text console. Now, simply
remove the offending theme:
Code:
ls /usr/share/gdm/themes
sudo rm -rf /usr/share/gdm/themes/Sunset
Compare GraphicalTheme values from gdm.conf and gdm.conf-custom, revert custom
value to default from gdm.conf, restart gdm:
Code:
grep -E ^GraphicalTheme /etc/gdm/gdm.conf
grep -E ^GraphicalTheme /etc/gdm/gdm.conf-custom
sudo nano /etc/gdm/gdm.conf-custom
sudo /etc/init.d/gdm restart
When you back in X session, use the virtual console to preview any new theme:
Code:
sudo apt-get install xnest
gdmflexiserver --xnest
It won't open fullscreen though and some items could be displaced. But at
least you'll get an idea whether you can run it or not.
You can always edit particular theme's *.xml file to suit your needs.
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