Comment # 4 on bug 1209221 from Takashi Iwai

Is Leap 15.x installed on the system?  If yes, could you try to install the old
Leap 15.4 GM kernel and check whether the behavior is seen?
That is, download Leap 15.4 kernel-default, kernel-default-extra and
kernel-default-optional packages from
  http://download.opensuse.org/distribution/leap/15.4/repo/oss/x86_64/
and install them with zypper install --oldpackage option, boot with it and
retest.

In anyway, please give the hwinfo output.  Also the dmesg outputs containing
the errors you mentioned.