Comment # 34 on bug 1218948 from Takashi Iwai

OK, then the original issue of Christian's machine is completely different from
others.  The problem for others is about a regression of ax88179 driver (the
actual crash), and this was already fixed in SLE15-SP5 git branch.  Meanwhile,
your problem seems related with i915 graphics driver.

The hangup detected by the watchdog might be related with the firmware loading
of i915.  Could you try to boot with i915.enable_guc=0 boot option and see
whether the problem still happens?  The kernel warnings might still appear, but
the hangup could be avoided by that.