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[Christopher Townsend <christopher.townsend@xxxxxxxxxxxxx>]

After hitting this condition, I attached gdb to the main unity8 process
and did a bt full.  This is what I got:

(gdb) bt full
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f8a7eb2bb03 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#2  0x00007f8a7eb26415 in QThreadPoolPrivate::waitForDone(int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#3  0x00007f8a7eb269f1 in QThreadPool::waitForDone(int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#4  0x00007f8a7ed5216d in QCoreApplication::~QCoreApplication() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#5  0x00007f8a80198149 in QGuiApplication::~QGuiApplication() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#6  0x0000000000404fb2 in ?? ()
No symbol table info available.
#7  0x00007f8a7e1c4ec5 in __libc_start_main (main=0x404500, argc=1, argv=0x7ffffc0de938, init=<optimized out>, fini=<optimized out>, 
    rtld_fini=<optimized out>, stack_end=0x7ffffc0de928) at libc-start.c:287
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 6695199899429293394, 4217504, 140737422158128, 0, 0, -6695206891045860014, 
                -6629618689277899438}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x409fb0 <__libc_csu_init>, 0x7ffffc0de938}, data = {
              prev = 0x0, cleanup = 0x0, canceltype = 4235184}}}
        not_first_call = <optimized out>
#8  0x0000000000405ac9 in _start ()

At this point, I'm not sure what condition it is waiting on.


** Changed in: unity8-desktop-session (Ubuntu)
       Status: Fix Released => Confirmed

** Changed in: unity8 (Ubuntu)
       Status: In Progress => Confirmed

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Touch seeded packages, which is subscribed to unity8 in Ubuntu.
https://bugs.launchpad.net/bugs/1353041

Title:
  Logging out of the Unity8 desktop preview session hangs

Status in “unity8” package in Ubuntu:
  Confirmed
Status in “unity8-desktop-session” package in Ubuntu:
  Confirmed

Bug description:
  When logging out of a Unity8 desktop preview session, it hangs and
  keeps displaying the Logout dialogue but nothing else happens.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1353041/+subscriptions