At this point, to help find the bug which fixed this, it might help to reproduce this with debugging symbols installed, then attach to the hung kvm task with gdb and get a backtrace:
1. install the stock qemu-kvm for your release 2. install gdb (sudo apt-get install gdb) 3. add qemu-kvm-dbgsym by following the instructions at https://wiki.ubuntu.com/DebuggingProgramCrash 4. start qemu-kvm, let it run, and reboot to make it hang 5. get the pid for the hung kvm, call it $pid 6. connect gdb to the process (gdb /usr/bin/qemu-system-x86_64 -p $pid), and get the backtrace by typing 'where'. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/924247 Title: KVM - reboot VM problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/924247/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
