Steps to reproduce (on Ubuntu 6.10, no xgl, compiz 0.3.7): 1. Start a session with compiz. 2. Check the option "unredirect_fullscreen_windows" in gconf. 3. Open a terminal. 4. If you have used sudo recently, do "sudo -k" to reset the timestamp. 4. Do "gksudo synaptic", for example. 5. Enter password. 6. Wait. Expected result: The darkened screen returns to normal brightness and synaptic opens. Actual result: The darkened screen remains dark, nothing else responds to mouse clicks, and synaptic does not open. I can recover from this sitation by going to a vt with Ctrl-Alt-F1, and then killing the gksudo process: after returning to the X session with Ctrl-Alt-F7, synaptic is open and all is well. I am using nvidia, but I had the same experience on a different machine with an ATI card, using AIGLX and the radeon driver.
Sorry about the phenomenal bug spam, guys. Adding xorg-team@ to the QA contact so bugs don't get lost in future.
I know we've looked into this before, and I can't reproduce this (anymore). Unfortunately, no-one has updated the bug report. Feel free to re-open this bug on bugs.opencompositing.org if you still experience it.
*** Bug 10094 has been marked as a duplicate of this bug. ***
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.