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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/736730 Title: gnome-panel in uninterruptible sleep after system call -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs