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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:

Compiz has broken after installing 12.10 with ATI Catalyst 12.10 drivers

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

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I think I have pinned this down to something in my profile. If I create a new user & log in as them, the display works fine. Any suggestions appreciated on which files I need to copy across from the other user to correct my display problem. – Alan Patterson Jun 23 '13 at 12:04
Could be something wrong with xorg.conf. After removing proprietary driver did you do sudo rm /etc/X11/xorg.conf then a reboot? – Chris Carter Jun 23 '13 at 12:25
Hi Chris, yes I did remove xorg.conf, however, it turns out to be a compiz config issue. I resolved this by starting compiz settings manager, going to "preferences" and "Reset to Defaults". All ok now. Cheers, Alan – Alan Patterson Jun 23 '13 at 12:29
Glad you got it sorted, you can provide and accept your own answer. It may help others in the future. – Chris Carter Jun 23 '13 at 12:32
Yep will do, it won't let me for another 4 hours though for some reason – Alan Patterson Jun 23 '13 at 13:24

I resolved this by starting compiz settings manager (sudo apt-get install compizconfig-settings-manager), going to "preferences" and "Reset to Defaults".

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