i have exactly the same problem, but i'm using ubuntu 11.10 32bit x86 desktop.
can be an issue with the nvidia video cards/drivers? i have a nvidia GeForce2 MX 400 video card, with proprietary drivers. ~$ lspci | grep -i vga 01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev b2) ~$ glxinfo | grep -i nvidia server glx vendor string: NVIDIA Corporation client glx vendor string: NVIDIA Corporation OpenGL vendor string: NVIDIA Corporation OpenGL version string: 1.5.8 NVIDIA 96.43.20 compiz effects seems also not working with this video card: /usr/lib/nux/unity_support_test -p OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce2 MX/AGP/SSE/3DNOW! OpenGL version string: 1.5.8 NVIDIA 96.43.20 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: no GL vertex buffer object: yes GL framebuffer object: no GL version is 1.4+: yes Unity 3D supported: no -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/945122 Title: gnome-shell will not fully load To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/945122/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs