I had a 15.04 system where the window manager decorations disappeared after I installed Nvidia drivers. I removed and purged them, but the decorations never came back.
So I reinstalled to 14.04, hoping this would fix things. With 14.04 and Nouveau, things worked fine, but when I mounted my /home
disk from the old system, the window decorations disappeared again. I tried renaming .cache/compizconfig-1/
, and then .cache/
but neither did anything. Where is the offending file?
Compiz in Ubuntu uses by default the dconf setting backend. The user data are stored in
~/.config/dconf/user
Better to copy that file from the new system home if you want to keep same user settings. If not or it doesn't work, remove it.