Comment # 1 on bug 1193822 from Takashi Iwai

Could you give the output of hwinfo from the broken state, as well as the full
dmesg output?  Please use attachments on Bugzilla.

If it's a regression in kernel, you can try to boot with the older kernel and
see whether it starts working again.  You can find older kernel packages in TW
history repo, too,
   http://download.opensuse.org/history/