Ubuntu slow to start following do-release-upgrade, errors on screen during boot

[aidan.schurr]

Hi all

I have a family PC running Ubuntu Studio 19.04 (Ubuntu Studio) with KDE Plasma as DE. I ran do-release-upgrade, and now find that the system is very slow to boot (60 seconds, was 4-5s previously - SSD) and the screen fills up with errors during the boot sequence. Errors are many and varied! But generally in the vein of "BUG: Scheduling while Atomic" for multiple difference processes.

Once booted the system seems to run just fine and is stable.

I'm assuming the errors during boot are being logged somewhere, but I don't where to start in diagnosing this one... Can anyone help point me in the right direction to figuring this out?

Oh, and lsb_release -a still shows me at 19.04!

[TheFu]

https://ubuntuforums.org/showthread.php?t=2437041 slow performance.
and
https://ubuntuforums.org/showthread.php?t=2436900 slow boot.