I'm seeing the same problems others are reporting here on 11.10 (released) with latest Unity: unity_4.24.0-0ubuntu2b1_amd64.deb
It wasn't clear to me that mods in "Ubuntu 2d" would persist in "Ubuntu", so here's what I did to restore my settings: 1. Create a new user and login as him (Unity works). 2. Report his compiz settings using gconftool-2 -R /apps/compiz-1 > working-unity 3. Login as "me" and report my settings: gconftool-2 -R /apps/compiz-1 > borked-unity 4. Compare to find the difference: $ diff borked-unity working-unity 624c624 < launcher_reveal_edge = Left --- > alt_tab_bias_viewport = false 627c627 < alt_tab_bias_viewport = true --- > launcher_reveal_edge = Left 955,956c955,956 < run_key = <Alt>F2 < main_menu_key = <Alt>F1 --- > run_key = > main_menu_key = 1493c1493 < active_plugins = [core,bailer,composite,opengl,vpswitch,snap,compiztoolbox,resize,place,session] --- > active_plugins = > [core,bailer,detection,composite,opengl,decor,vpswitch,grid,snap,move,regex,gnomecompat,compiztoolbox,mousepoll,resize,wall,animation,place,imgpng,workarounds,expo,fade,unitymtgrabhandles,session,scale,ezoom,unityshell] Maybe this can help someone if they're still trying to debug this issue. FWIW, I didn't know about "unity --reset". That would have solved my problem. Instead, I found that the "active_plugins" setting was the key. I restored it using this command: gconftool-2 --type list --list-type string --set /apps/compiz-1/general/screen0/options/active_plugins "[core,bailer,detection,composite,opengl,decor,vpswitch,grid,snap,move,regex,gnomecompat,compiztoolbox,mousepoll,resize,wall,animation,place,imgpng,workarounds,expo,fade,unitymtgrabhandles,session,scale,ezoom,unityshell]" And for good measure: $ /usr/lib/nux/unity_support_test -p OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: Quadro NVS 160M/PCI/SSE2 OpenGL version string: 3.3.0 NVIDIA 280.13 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: yes $ sudo lshw -c video *-display description: VGA compatible controller product: G98M [Quadro NVS 160M] vendor: nVidia Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:16 memory:f5000000-f5ffffff memory:e0000000-efffffff memory:f2000000-f3ffffff ioport:df00(size=128) memory:f4000000-f401ffff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/861643 Title: CCSM crashes Unity To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/861643/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs