Public bug reported: Steps to repro 1. freshly boot the device 2. ssh in 3. "stop unity8"
It will often hang there for some time. >From the backtrace (http://pastebin.ubuntu.com/8527967/), this is the thread I >most suspect: Thread 3 (Thread 0xa2ab6450 (LWP 3462)): #0 0xb5ff2554 in __libc_do_syscall () from /lib/arm-linux-gnueabihf/libpthread.so.0 #1 0xb5fee192 in pthread_cond_wait@@GLIBC_2.4 () from /lib/arm-linux-gnueabihf/libpthread.so.0 #2 0xb636705c in wait (time=4294967295, this=0xa8ac1400) at thread/qwaitcondition_unix.cpp:136 #3 QWaitCondition::wait (this=<optimized out>, mutex=0xa86c6c40, time=time@entry=4294967295) at thread/qwaitcondition_unix.cpp:208 #4 0xb635e818 in QFutureInterfaceBase::waitForResult (this=this@entry=0xa2ab5c4c, resultIndex=resultIndex@entry=0) at thread/qfutureinterface.cpp:313 #5 0xa8eb0810 in result (this=0xa2ab5c4c) at /usr/include/arm-linux-gnueabihf/qt5/QtCore/qfuture.h:171 #6 QLightDM::GreeterImpl::converseWithPam (num_msg=1, msg=<optimized out>, resp=0xa2ab5c88, appdata_ptr=0x106aeb8) at /build/buildd/unity8-8.00+14.10.20141009.4/tests/mocks/LightDM/demo/GreeterPrivate.cpp:165 #7 0xa8e5b092 in pam_vprompt (pamh=0x10c1c30, style=1, response=0xa2ab5ce0, fmt=fmt@entry=0xa3a9798c "%s", args=...) at pam_vprompt.c:83 #8 0xa8e5b184 in pam_prompt (pamh=<optimized out>, style=<optimized out>, response=<optimized out>, fmt=0xa3a9798c "%s") at pam_vprompt.c:111 #9 0xa3a94304 in ?? () from /lib/arm-linux-gnueabihf/security/pam_extrausers.so Backtrace stopped: previous frame identical to this frame (corrupt stack?) QLightDM::GreeterImpl::converseWithPam is blocking shutdown ** Affects: unity8 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1379438 Title: unity8 often hangs on shutdown - but if you touch the screen it stops correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1379438/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
