This question already has an answer here:
I recently changed the default font using dconf tool. That was ok, and after trying that font, I opened dconf again and clicked "Restore Default" button. Then the screen was unresponsive, I forced it to shutdown. Next when I tried to login, the login screen was ok, but after logging in, nothing would show up, not even launcher, terminal, folders on Desktop etc.,. Only visible things are alert box to ask me to confirm shutting down when I press power button. What might be the reason for this and what are possible solutions?
I tried the solution mentioned for the original question, but I get the error
GtkWarning: Default font does not have a family set GtkWarning: Default font does not have a positive size set
Is there any way to correct this without logging in as a new user?
Unity doesn't load, no Launcher, no Dash appears (for this, I get an error saying
ERROR unity.launcher.trashlaunchericon TrashLauncherIcon.cpp:62 Could not create file monitor for trash uri:Operation not supported Segmentation fault(core dumped)
(all the above links are different).
All the above solutions didn't work and one more thing that started happening is when I do
export DISPLAY=:0 ccsm
and enter UI by Ctrl+Alt+F7, it says, CompizConfig-Settings-Manager has stopped working unexpectedly.
I tried re-installing ccsm but, it says, it is already installed and it is the newest version.
OS: Ubuntu 12.04