Ok all. I'd like to see if this is a window or something else. Since we can't xwininfo it, I wrote a small plugin which allows you to navigate to a window and dump its contents.
lp:~smspillaz/+junk/sdump So you'll need to install compiz-dev and then bzr branch lp:~smspillaz/+junk/sdump cd sdump mkdir build cd build cmake .. make && make install And then go into ccsm and enable the sdump plugin (protip, you can prevent the crash on enabling plugins by going into advanced settings, disabling auto-sorting and selecting sdump from the left list and moving it to the right list). Once you've done that and manage to reproduce the white window, use super-n and super-p to move the blue rectangle to the white window (if possible) and then press super-d to output its contents to a terminal or .xsession-errors. Post the output or the .xsession-errors here -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/940603 Title: white box randomly shows up at top left corner blocking applications from using stuff under it To manage notifications about this bug go to: https://bugs.launchpad.net/compiz-core/+bug/940603/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs