Clicking iPhone in Launcher hangs Compiz (gvfs sync call not returning)

[Matthew Paul Thomas]

compiz | 1:0.9.11+14.04.20140409-0ubuntu1, Ubuntu 14.04

1. Connect an iPhone, and choose "Trust" if necessary.
2. In the Unity Launcher, click either of the iPhone items ("Name of iPhone" or "Documents on Name of iPhone").
3. Try to click anywhere -- any window, the Launcher, or the menu bar.

What happens: Nothing.
What should happen: Ubuntu responds as normal.

To recover:
4. Type Fn Ctrl Alt F1 to switch to the console, and log in if necessary.
5. ps aux | grep compiz
6. kill -9 {the number of the compiz process}
7. Fn Alt F7.

Compare bug 1111367, where Compiz crashes when unmounting an iPhone.

[Sebastien Bacher (seb128)]

it seems to hang in a sync gvfs call

[Ivan Koldaev (pixus-ru)]

To avoid X session termination, do
sudo killall -r -9 "gvfs.*"
instead of
kill -9 {the number of the compiz process}