I have had my display working correctly on a new machine (Ubuntu 13.04 64-bit, ATI Radeon HD6670) for the last 3 weeks using the proprietary driver downloaded from the ATI website. Yesterday, I rebooted the machine and now Compiz is broken. I have no Unity menu, no sidebars, no window decoration. I have tried following the instructions:
to completely remove the driver, rebuild the .deb packages and reinstall. However I still have no compiz etc. fglrxinfo gives:
sudo fglrxinfo display: :0.0 screen: 0 OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: AMD Radeon HD 6670 OpenGL version string: 4.2.12217 Compatibility Profile Context 12.104
actually ps aux|grep compiz indicates that compiz is actually running, but I have no effects (e.g. prior to the reboot I had "wobbly windows" effect), no window decoration & no Unity launcher.
When I start gnome-panel from a terminal, it starts but gives:
(gnome-panel:5308): Gtk-CRITICAL **: gtk_accelerator_parse_with_keycode: assertion `accelerator != NULL' failed ** (gnome-panel:5308): WARNING **: Unable to parse mouse modifier '(null)'
Windows can't be moved or resized