I've re-opened the urfkill (Ubuntu) task as the underlying bug can still occur, and the fix released is a workaround which will allow a user to recover their modem by rebooting the phone.
We still have not managed to reproduce the underlying problem. What's needed is a stress test script for urfkill which can be configured to run for hours. Something similar to the checkbox reboot, suspend, hibernate tests used by Canonical's mainstream HW enablement team.
I've re-opened the urfkill (Ubuntu) task as the underlying bug can still occur, and the fix released is a workaround which will allow a user to recover their modem by rebooting the phone.
We still have not managed to reproduce the underlying problem. What's needed is a stress test script for urfkill which can be configured to run for hours. Something similar to the checkbox reboot, suspend, hibernate tests used by Canonical's mainstream HW enablement team.