Re: kern/52912: hdafg: no sound from jack port on a laptop

From: Jake Slazenger <jake.slazenger%yandex.com@localhost>
To: Fekete Zoltán <fekete.zoltan%minux.hu@localhost>
Cc: gnats-bugs%NetBSD.org@localhost, kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/52912: hdafg: no sound from jack port on a laptop
Date: Fri, 16 Feb 2018 00:04:58 +0300
X-Mailer: Claws Mail 3.14.1 (GTK+ 2.24.31; x86_64--netbsd)

On Mon, 8 Jan 2018 19:25:00 +0000 (UTC)
Fekete Zoltán <fekete.zoltan%minux.hu@localhost> wrote:

> The following reply was made to PR kern/52912; it has been noted by
> GNATS.
>
> From: =?UTF-8?Q?Fekete_Zolt=C3=A1n?= <fekete.zoltan%minux.hu@localhost>
> To: gnats-bugs%netbsd.org@localhost
> Cc:
> Subject: Re: kern/52912: hdafg: no sound from jack port on a laptop
> Date: Mon, 08 Jan 2018 20:22:05 +0100
>
> 2018-01-08 07:50 időpontban jake.slazenger%yandex.com@localhost ezt írta:
> >> Number:         52912
> >> Category:       kern
> >> Synopsis:       hdafg: no sound from jack port on a laptop
> >> Confidential:   no
> >> Severity:       non-critical
> >> Priority:       medium
> >> Responsible:    kern-bug-people
> >> State:          open
> >> Class:          sw-bug
> >> Submitter-Id:   net
> >> Arrival-Date:   Mon Jan 08 06:50:00 +0000 2018
> >> Originator:     Jake Slazenger
> >> Release:        CURRENT-8.0-171230
> >> Organization:
> >> Environment:
> > NetBSD localhost 8.0_BETA NetBSD 8.0_BETA (RUSTY) #0: Sun Jan 7
> > 16:30:08 MSK 2018
> > rusty@localhost:/usr/src/171230/src/sys/arch/amd64/compile/RUSTY
> > amd64
> >> Description:
> > When I connect headphones to jack port on my laptop with Realtek
> > ALC268 sound chip, sound is not switching to the headphones and
> > continues to come out from built-in speakers.
> >
> > For example, on Linux-based systems sound is automatically switches
> > when headphones is connected.
> >
> > Is it a bug, or I do something wrong and it can be switched
> > manually?
> >> How-To-Repeat:
> > Connect headphones to jack port on a laptop with Realtek ALC268
> > sound chip.
> >> Fix:
>
>
> Hi Jake,
>
> I had a similar problem, and finally I could figure out how to set
> jack up. Probably your codec is not set up correctly, and it is not a
> bug. There are several different codecs/setups, and kernel developers
> do not have the capacity to program each one.
>
> So, you have to solve it yourself. It's not really obvious however.
>
> 1. You have to read carefully the snd_hda man page. There you will
> understand how the hda driver groups the different in/out parts
>
> 2. Try to find a technical manual for your sound chip. Similar to
> mine here (Analog Devices 1984A):
> http://www.analog.com/media/en/technical-documentation/obsolete-data-sheets/AD1984.pdf
>
> 3. Use hdaudioctl get command to gain your current settings. You
> have to read and decode hexadecimal numbers...
>
> 4. Then modify the xml file you got in point 3, and use hdaudioctl
> set command with the modified file apply changes. Then try jack.
> Repeat 3-4 until success.
>
> Another aproach: if you can program, you could modify the kernel,
> and recompile. Here is my patch, but this is device-dependent:
> https://minux.hu/netbsd-hdaudio-jack-detection
>
> Good luck!
>
> I'm working on a script that translates that output file into human
> readable form. Just time is always an issue.
>
> Rgds,
>
> FeZ
>

Thank you very much, FeZ, for the such detailed answer!

But, anyway, I didn't understand how association and sequence numbers
works (yes, I'm a little bit stupid).

So I looked to FreeBSD sources to find required assoc and seq numbers:
https://github.com/freebsd/freebsd/blob/d8596f6f687a64b994b065f3058155405dfc39db/sys/dev/sound/pci/hda/hdaa_patches.c

And used it with Fekete's patches... And it worked!

So problem is partially solved, I think.

And again, thank you very much for the help, FeZ!

Oh, and yes. I'm sorry for my very bad English.

Patch for 7.1.1 kernel:
--- src/sys/dev/pci/hdaudio/hdafg.c.orig   2018-02-15 15:23:24.000000000 +0300
+++ src/sys/dev/pci/hdaudio/hdafg.c   2018-02-15 23:37:49.000000000 +0300
@@ -657,6 +657,21 @@
    }
#endif

+        /* XXX ALC268 */
+        if (sc->sc_vendor == HDA_VENDOR_REALTEK && sc->sc_product == 0x0268) {
+        if (COP_CFG_PORT_CONNECTIVITY(w->w_pin.config) == COP_PORT_JACK) {
+            /* nid 20 */
+            if (w->w_nid == 0x14) {
+          /* set assoc=1 */
+          w->w_pin.config &= ~0xf0;
+          w->w_pin.config |= 0x10;
+          /* set seq=15 */
+          w->w_pin.config &= ~0x0f;
+          w->w_pin.config |= 0x0f;
+       }
+        }
+   }
+
    conn = COP_CFG_PORT_CONNECTIVITY(w->w_pin.config);
    color = COP_CFG_COLOR(w->w_pin.config);
    defdev = COP_CFG_DEFAULT_DEVICE(w->w_pin.config);