How to restart window manager so that styles (or whatever) are restored?
After doing /etc/init.d/networking stop they feel completely broken.
I have reinstalled lightdm.
I have restarted lightdm.
Nothing seems to help.
Is there a command line tool to reconfigure lightdm with?
You may need to restart your display manager to fix your problem.
sudo service gdm restart
sudo service lightdm restart
lightdm replaces gdm in Ubuntu 11.10
sudo service sddm restart
While restarting lightdm restarts the entire display manager, you may be able to resolve the issue by restarting unity or compiz (Unity is a compiz plugin).
Restarting Unity (nohup setsid unity OR nohup unity --restart on the CLI OR Alt+F2 and type unity) restarts the Unity shell.
If that doesn't work, restart compiz with nohup compiz --replace. You may need to restart unity again after restarting compiz.
Restarting lightdm restarts the entire display manager which is most likely to work but it will also close your running applications. Which you need to do depends on how broken your session is. If you can just restart Unity or Compiz, do that. If that doesn't work, restart lightdm.
The following wiki article has additional information about fixing LightDM issues:
https://wiki.ubuntu.com/LightDM
