Here's a backtrace of unity-system-compositor! :) I have qtcore, qtdeclarative and libunity debug packages installed.
Moreover, I installed the following packages as suggested by kgunn: libmirserver33-dbgsym libmirclient9-dbgsym libmircommon5-dbgsym libmirplatform9-dbgsym libmirprotobuf1-dbgsym mir-client-platform-android3-dbgsym NOTE: when I first tried to take the bt, the compositor had PID 1574. I attached gdb to it, and while it was loading the dbgsyms I think the compositor died. I checked top, compositor now had PID 1575. UI still frozen, power button still not responding. I attached gdb to it again, and got the bt that you can find attached. ** Attachment added: "unity-system-compositor BT" https://bugs.launchpad.net/canonical-devices-system-image/+bug/1491566/+attachment/4470669/+files/unity-system-compositor_STUCK -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1491566 Title: unresponsive shell including power button doesn't blank/unblank display To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1491566/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
