Well, I see the problem also on real hardware, but it's harder to reproduce. In any case, I don't want to install a non-standard kernel there, so it is mixed up with the other problems with the 5.0 kernel.
However, the VM *does* indeed have bluetooth. Virtualbox allows VMs to access any USB device on the host (when enabled). My BT controller is a usb device. For testing I disable BT on the host and later enable the VM to access the BT usb device; it works fine, ie. connects and disconnects as expected (and, yes, even plays music!). All from the VM. However the GUI problem is most apparent in the VM, running 5.2 kernel. I don't think using a VM is relevant, except that hardware timing will be different due to i/o instructions being trapped and re-executed on the host. If timing causes a problem, then it probably points to a race condition or similar bug. Anyway, as I mentioned the same symptom appears less frequently on bare hardware with the 5.0 kernel. I will attached output from journalctl -f for just one "snapback", and for a complete sequence eventually succeeding. Again, tjese were made with the older kernel. ** Attachment added: "newlog_kernel5.0.0-21-generic_onlyfirstsnapback.txt" https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1838227/+attachment/5279954/+files/newlog_kernel5.0.0-21-generic_onlyfirstsnapback.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1838227 Title: Bluetooth "Connection switch" snaps back by itself until after many tries To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1838227/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
