Discussed jawn-smith's failure to reproduce with juergh; it appears the issue only affects certain Pi 4 2GB rev 1.4's but not others. The test package prepared in https://launchpad.net/~waveform/+archive/ubuntu/firmware appears to fix the issue over several devices juergh has tested so I've pushed it (with one further fix to excise the pointless flash-kernel trigger) to bionic-proposed.
Discussed jawn-smith's failure to reproduce with juergh; it appears the issue only affects certain Pi 4 2GB rev 1.4's but not others. The test package prepared in https:/ /launchpad. net/~waveform/ +archive/ ubuntu/ firmware appears to fix the issue over several devices juergh has tested so I've pushed it (with one further fix to excise the pointless flash-kernel trigger) to bionic-proposed.