I really hope this post won’t have a long life. I noticed there is a bug in both linux kernel 5.6.5 and 5.4.33 LTS. If you’re running a computer with an AMD GPU, you won’t be able to reboot or stop it cleanly.
As of April 19th, 2020, both kernels are on testing. I opened a bug on Archlinux tracker : https://bugs.archlinux.org/task/66305
This bug is known upstream and a patch is available: https://bugzilla.kernel.org/show_bug.cgi?id=207331
So, let’s hope Archlinux won’t push both 5.6.5 and 5.4.33 LTS kernels into core repository without a patch. Or maybe until 5.6.6 and 5.4.34 LTS.