I can reproduce the freeze on Ubuntu 14.04 with gnome-shell 3.12 from the gnome3-team ppa.
You can freeze gnome shell this way: 1) Start nautilus 2) Press ctrl+l to navigate to a directory using the keyboard. Some ppl suggests this is a driver issue. I don't think so. I'm running this on an optimus laptop. The freeze is reproducible using both i915 and nouveau. This is the stack trace: (gdb) #0 0x00007f39d0469fbd in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007f39c7c0fb72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f39c7c113ff in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f39c7c11512 in xcb_wait_for_reply () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #4 0x00007f39cd73948f in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6 #5 0x00007f39cd720c74 in _XGetWindowAttributes () from /usr/lib/x86_64-linux-gnu/libX11.so.6 #6 0x00007f39cd720de1 in XGetWindowAttributes () from /usr/lib/x86_64-linux-gnu/libX11.so.6 #7 0x00007f39d213241c in meta_window_new (display=display@entry=0x3061fd0, xwindow=23069590, must_be_viewable=must_be_viewable@entry=0, effect=effect@entry=META_COMP_EFFECT_CREATE) at core/window.c:877 #8 0x00007f39d20ff8fe in event_callback (event=0x7fff992b47b0, data=0x3061fd0) at core/display.c:2790 #9 0x00007f39d214e933 in filter_func (xevent=0x7fff992b47b0, event=<optimized out>, data=<optimized out>) at ui/ui.c:261 #10 0x00007f39cd497411 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0 #11 0x00007f39cd4976de in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0 #12 0x00007f39cd46edd9 in gdk_display_get_event () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0 #13 0x00007f39cd497492 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0 #14 0x00007f39d09a8e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #15 0x00007f39d09a9048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #16 0x00007f39d09a930a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #17 0x00007f39d210c2a1 in meta_run () at core/main.c:566 #18 0x0000000000401d01 in main (argc=1, argv=0x7fff992b4ba8) at main.c:437 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1218309 Title: Gnome-shell freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1218309/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs