Comment 2 for bug 1860013

All 3 of my machines survived overnight testing on the 5.5-rc6 mainline build[*].
Next step is to try 5.3. 5.3 mainline doesn't boot on these systems, so I'll use Ubuntu's 5.3.0-24.

[*] https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5-rc6/