I rebooted and installed symbol files and setup a script to get a
backtrace from gnome-panel.
The problem just reoccurred, but I did't manage to attach to the running
gnome-panel to make a backtrace. Attaching makes gdb hang.
The main symptom is the same as before: the gnome-panel is unresponsive. The
applets in the panel are still working: workspace switcher, skype, network
connection status, desktop sharing, displays, bluetooth, volume, indicator
applet, clock applet, indicator applet session. What is not working, are
shortcut icons, start/applications/places/system menus.
What is half working the windows list: it is garbled, not updated when
switching workspaces, but clicking on the non-visible items still has the same
effect.
But this time, the gnome-panel sleeps, and just nautilus is in uninterruptible
sleep state.
...
1727 vries 20 0 309m 7608 4192 S 0 0.2 0:25.90 gnome-panel
1728 vries 20 0 616m 12m 4612 D 0 0.3 0:16.39 nautilus
...
something like this also hangs:
...
/bin/ls --color=auto
...
while a normal /bin/ls works as expected.
attaching to such a hanging ls or to the nautilus also hangs gdb.
The same kernel message as before occur, but now just for nautilus.
** Attachment added: "kern.log"
https://bugs.launchpad.net/ubuntu/+source/gnome-panel/+bug/736730/+attachment/1923725/+files/kern.log
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https://bugs.launchpad.net/bugs/736730
Title:
gnome-panel in uninterruptible sleep after system call
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