Comment # 8 on bug 1200919 from Takashi Iwai

(In reply to Hillwood Yang from comment #6)
> (In reply to Takashi Iwai from comment #4)
> > Could you try to boot with the old Leap 15.3 kernel and see whether it works?
> > If zypper or rpm complains dependency, ignore it and forcibly install.
> 
> I confirm it is a kernel bug. I boots the system with text mode, it also
> reproduces this bug.
> 
> And I installed kernel 5.10 from
> https://build.opensuse.org/package/show/home:mbrugger:branches:bpir2-kernel/
> kernel-source, the system is no longer freeze.

OK, and if it's freezing, do you get the kernel Oops or whatever?  The dmesg
output you gave doesn't show any relevant messages.

If it's a kernel Oops, you can try to catch it via kdump, too.