I’m on the 31 Beta and have been running kernel 5.3.5-300 for several days without problems.
This morning, I ran “dnf upgrade --refresh” and it upgraded my kernel backward to 5.3.4-300. When the system rebooted, 5.3.5-300 was still at the top of the grub list, but 5.3.4-300 was pre-selected and that is what ran without manual intervention.
Hi all is ok the backward happened 2-3 days ago, when gnome-software did need a downgrade of version, what forced to this backward, after of this the kernel 5.3.4 is in the “stable” branch while the 5.3.5 is not active and is fixed to the updates-testing.
For me 5.3.5 worked great and fast like the last version of mesa (really nice), but mesa was downgraded too, between other things there was a problem with rendering in google-chrome (I belive remember)
Ok, thanks everyone. Since I never run Chrome, I must not have experienced the problems others may have been having.
It is curious that on my other system, which runs Arch Linux, I am having the failure to reboot problem (and it continues after this morning’s upgrade to 5.3.6), but Fedora 31 Beta on my notebook has been running, perfectly.