Re: Fixing sound on Asus UX534F / some UX533 models

[Takashi Iwai <tiwai@suse.de>]

On Tue, 02 Jun 2020 11:51:49 +0200,
Hans de Goede wrote:
> 
> Hi Kai-Heng Feng, Takashi,
> 
> I see that you are on the notification list for this bug:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850439
> 
> So you may have already seen this. Some owners of affected
> laptops (which have non working speakers / headphone output atm),
> have done some heroic debugging work and come up with a set of
> 2 hda-verb commands which fix this.
> 
> I'm not all that familiar with writing hda quirks, so I was hoping
> that one of you 2 can come up with a patch to fix this at the
> kernel level.
> 
> This would also resolve these 2 bugs, which I believe are the
> same bug really:
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=206289
> https://bugzilla.redhat.com/show_bug.cgi?id=1834751

Adding verbs are trivial and it can be done even without patching
kernel but providing by a patch via patch module option of
snd-hda-intel driver.

But, before moving forward, I'd like to confirm about the correctness
(and the safeness) of those verbs.

Kailang, could you check the COEF verbs mentioned in the bug entry
above?


thanks,

Takashi