On Wed, 2019-01-02 at 15:14 +0000, Ian Campbell wrote: > > But after booting the buster kernel qcontrol could setup > > successfully: > > I wonder if it is the reboot itself, and not necessarily the switch to > the buster kernel which is the bandaid here, i.e. if rebooting back > into the stretch kernel would work too.
In fact I also wonder if: udevadm control --reload-rules && dpkg --configure -a would do the trick, indicating that the reload is what is missing.