Re: Realtek Audio On Kabylake

On 03/30/2017 14:30, Pete Wright wrote:
>
>
> On 03/30/2017 14:26, Dimitry Andric wrote:
>> On 30 Mar 2017, at 20:18, Pete Wright <pete_at_nomadlogic.org> wrote:
>>> Hello,
>>> I have a new Kabylake based Intel laptop running CURRENT (well
>>> drm-next).  Everything has "just worked" so far except audio. Here is
>>> the output of /dev/sndstat:
>>>
>>> $ cat /dev/sndstat
>>> Installed devices:
>>> pcm0: <Realtek (0x0225) (Analog)> (play/rec) default
>>> pcm1: <Intel Kabylake (HDMI/DP 8ch)> (play)
>>> No devices installed from userspace.
>>>
>>> I am unable to get audio output on the laptop's speakers using the
>>> Analog device at pcm0, I was wondering if this was due to the Realtek
>>> device not being recognized?  I would expect the model number or
>>> something similar as opposed to "0x0225".  Here's the output of
>>> pciconf for reference:
>>>
>>> $ pciconf -lv
>> ...
>>
>> Hmm, that output didn't contain any Realtek device?  What does dmesg
>> say about the pcm devices?  Also, can you get any sound via pcm1?
>
> yea i thought that was odd as well.  here's what i think is relevant 
> from my dmesg buffer:
>
> $ dmesg|grep hdaa
> hdaa0: <Realtek (0x0225) Audio Function Group> at nid 1 on hdacc0
> pcm0: <Realtek (0x0225) (Analog)> at nid 33 and 18 on hdaa0
> hdaa1: <Intel Kabylake Audio Function Group> at nid 1 on hdacc1
> pcm1: <Intel Kabylake (HDMI/DP 8ch)> at nid 3 on hdaa1
>
> i have not attempted to output audio via pcm1 via an HDMI connected 
> panel - but I can test that tonight.  using pcm1 does *not* work with 
> the headphone jack or laptop speakers but i think that's expected.

hrm no luck with HDMI either.  FWIW this is the specific chipset:

Realtek ALC3253

I grep'd through the source tree and didn't see any references to this 
chipset, I suspect this is a new driver/codec that needs to be created 
or imported?  It looks like linux only added support with the 4.11 kernel...

Cheers,
-pete

-- 
Pete Wright
pete_at_nomadlogic.org
_at_nomadlogicLA