Unity8 desktop lockscreen hangs on ofono issues

[Sebastien Bacher]

Using current vivid with unity8-desktop on an inspiron configuration the unity8 lockscreen hangs, stopping ofono makes it work unblock. There is some weird issuew between n-m and ofono but unity8 shouldn't hang on issues in that stack

[Sebastien Bacher (seb128)]

the unity8 stacktrace suggests it blocks on a sync dbus call involving code in libqnmbearer.so

[Sebastien Bacher (seb128)]

backtrace

#0 0x00007f047df3845d in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007f04795e1608 in poll (__timeout=<optimized out>, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2 _dbus_poll (fds=<optimized out>, n_fds=<optimized out>, timeout_milliseconds=<optimized out>) at ../../dbus/dbus-sysdeps-unix.c:2595
#3 0x00007f04795dac28 in socket_do_iteration (transport=0x134c990, flags=6, timeout_milliseconds=<optimized out>) at ../../dbus/dbus-transport-socket.c:1149
#4 0x00007f04795d9ad8 in _dbus_transport_do_iteration (transport=0x134c990, flags=6, timeout_milliseconds=24635) at ../../dbus/dbus-transport.c:1001
#5 0x00007f04795c3004 in _dbus_connection_do_iteration_unlocked (connection=connection@entry=0x134d0a0, pending=pending@entry=0x0, flags=flags@entry=6,
    timeout_milliseconds=timeout_milliseconds@entry=24635) at ../../dbus/dbus-connection.c:1227
#6 0x00007f04795c3abc in _dbus_connection_block_pending_call (pending=0x17fdda0) at ../../dbus/dbus-connection.c:2527
#7 0x00007f04795d3f0a in dbus_pending_call_block (pending=<optimized out>) at ../../dbus/dbus-pending-call.c:741
#8 0x00007f04795c3fba in dbus_connection_send_with_reply_and_block (connection=0x134d0a0, message=0x17ad020, timeout_milliseconds=-1, error=0x7f0421701130)
    at ../../dbus/dbus-connection.c:3575
#9 0x00007f047cd99261 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f047cd859fb in QDBusConnection::call(QDBusMessage const&, QDBus::CallMode, int) const () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#11 0x00007f047cda2eb1 in QDBusAbstractInterface::callWithArgumentList(QDBus::CallMode, QString const&, QList<QVariant> const&) ()
   from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#12 0x00007f047cda5998 in QDBusAbstractInterface::call(QDBus::CallMode, QString const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&) () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007f047cda5b7d in QDBusAbstractInterface::call(QString const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&) () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#14 0x00007f0420aba72e in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/bearer/libqnmbearer.so
#15 0x00007f0420acea8c in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/bearer/libqnmbearer.so
#16 0x00007f0420acef19 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/bearer/libqnmbearer.so
#17 0x00007f0420ae0df1 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/bearer/libqnmbearer.so
...

[Christopher Townsend (townsend)]

Yeah, I see this issue as well:(

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.