Re: Sound issues with Dell Latitude 7490 (kabylake)

From: Emmanuel Vadot <manu_at_bidouilliste.com>
Date: Tue, 2 Oct 2018 21:48:23 +0200
On Tue, 2 Oct 2018 14:29:39 -0500
Eric van Gyzen <eric_at_vangyzen.net> wrote:

> >>> Thanks. So if you try this:
> >>>
> >>> sysctl dev.hdaa.0.nid24_config="as=4 seq=15"
> >>> sysctl dev.hdaa.0.nid21_config="as=1 seq=15"
> >>> sysctl dev.hdaa.0.reconfig=1
> >>
> >> Works, thank you!
> > 
> >   Dude that's some serious shit !
> >   Jacob, is this documented somewhere ?
> >   I haven't read the driver code but what does as/seq etc represent
> > there ?
> 
> snd_hda(4) is very helpful.

 Indeed it is but I'm not sure that everyone (me included) can produce
what Jacob did to have headphone re-routed and muting the other outputs
just by reading the manual.

> 
> >   What could we do to make this
> > easier for users ?
> 
> We can commit similar changes to the kernel driver.  kstaring on github 
> has ported many such changes from Linux to FreeBSD:
> 
> 	https://github.com/freebsd/freebsd/pull/139
> 	https://github.com/freebsd/freebsd/pull/144
> 
> I don't know if his port includes the changes Rod needs.
> 
> I was planning to commit these when life calms down enough to test them. 
>   If anyone beats me to it, I would be delighted.  I was also waiting 
> until after 12.0, but in hindsight, I wish I had just committed them.

 Please do as soon as 13-CURRENT branches and let people
test/complain :)

> 
> Eric
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-- 
Emmanuel Vadot <manu_at_bidouilliste.com> <manu_at_freebsd.org>
Received on Tue Oct 02 2018 - 17:48:26 UTC

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