Comment 5 for bug 2011925

I've uploaded a tentative fix for this to ppa:waveform/flash-kernel (https://launchpad.net/~waveform/+archive/ubuntu/flash-kernel/+packages). I've tested this locally on several Pi images and found it operates correctly so far, but then so did the prior fix.

@fginther could you test this version in at least one of the arm64 clouds in question?