[摘录]gnome-shell 无响应时一般需要做什么

一般情况下的 gnome-shell 无响应：

Typically when gnome-shell fails to respond you can do 1 oftwo things:

1. Alt+F2 and if you get a dialog for executing commands typerestart

2. Ctrl+Alt+F2 to switch to terminal console 2 (tty2), loginand try killing gnome-screensaver and/or restarting a replacementgnome-shell with:pkillgnome-screensaver switch back to tty7 ( Ctrl+Alt+F7) tocheck your Gnome screen, if not, go back to tty2 andgnome-shell --display :0.0--replace & (which was suggested before bysteve and msdin respectively)

If both fail, then you need to restart your display manager(gdm, lightdm, kdm). Typically:sudo service gdmrestart

切换到其他终端再切换回 gnome-shell 的tty时：

> issue with switching back from a tty sessionto the x11 session via CTRL-ALT-F7 key kombination

It is possible that you X11 session is not on tty7; try or.

参考：

http://askubuntu.com/questions/74117/how-to-recover-from-gnome-3-2-freeze

http://linux.derkeiler.com/Mailing-Lists/SuSE/2011-06/msg00059.html