I'm experiencing this too. Immediately after logging in, I move the mouse to the top left and the Activities panel disappears and I'm left with the Nautilus menu along the top. If I open the terminal, the top of the window isn't there (the themed part where the Close button is located.) I just have the menu commands along the top.
If I type "gnome-shell r " into the terminal to restart the shell, the screen flickers as if trying to restart, but then I get the following error in the Terminal (I hope I've copied this down correctly, because I couldn't take a screen shot or copy the text): Window manager warning: Log level 8: g_value_peek_pointer: assertion 'G_IS_VALUE (value)' failed gnome-shell-calendar-server[5188]: Got HUP on stdin - exiting Segmentation fault (core dumped) After trying to restart gnome shell, the system becomes completely unusable, i.e. I can't type into the terminal, and there is no response from mouse clicks. I've tried pressing Ctrl + Alt + Del to log out, but when I log in again, there is still no Activities panel, just the Nautilus menu along the top. I need to restart the PC before I can try gnome-shell again. This is the result of uname: Linux me-desktop-1110 3.0.0-10-generic #16-Ubuntu SMP Fri Sep 2 18:32:04 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux gnome-shell --version: GNOME Shell 3.1.4 (Sorry not sure what other info is required) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/841399 Title: gnome-shell segfault error 4 in libgobject-2.0.so.0.2918.0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/841399/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
