No sound on 10.1-RELEASE

[Chris H]

On Tue, 10 Mar 2015 12:15:22 +0100 Piotr Kubaj <pkubaj at riseup.net> wrote

> On 03/08/15 22:15, Chris H wrote:
> > On Sun, 08 Mar 2015 19:14:47 +0100 Piotr Kubaj <pkubaj at riseup.net> wrote
> > 
> >> On 03/07/15 01:55, Chris H wrote:
> >>> On Sat, 07 Mar 2015 00:08:38 +0100 Piotr Kubaj <pkubaj at riseup.net> wrote
> >>>
> >>>> I've got MSI X99 motherboard and am using it with UEFI installation of
----8<---BIG-SNIP---
> >>>
> >> I'm not sure what may be wrong in dmesg.boot so I've uploaded it here:
> >> http://pastebin.com/pP0KXp4v
> > Out of the 4 MSI boards I that I have; 3 run the same
> > Realtek ALC893 HDA CODEC that yours does. The other, the
> > Realtek ALC1200 HDA CODEC. All four of them work. But I
> > notice 1 notable difference; that yours reports 2
> > HDA interfaces:
> > hdac0: <NVIDIA (0x0fbb) HDA Controller>
> > and
> > hdac1: <Intel Wellsburg HDA Controller>
> > I see hdac0 is disregarded (unused) whereas
> > hdac1 is enabled, and functioning. I think your problems
> > quite possibly lies in your (sound) system attempting to
> > use the first HDA device in the list, which is effectively
> > disabled. If you can determine a way to tell KDE, and friends
> > to use the 2nd HDA. Things may well go as intended.
> > None of the 4 MSI boards I have display 2 HDA's, as yours
> > does.
> > If you have any additional questions, you may well find
> > the FreeBSD forums already have answers to your issue. This
> > is where I originally found answers to my issues, when I
> > first started using these boards.
> > 
> > HTH
> >>
> >> KDE is definitely using OSS as chosen in its settings (I also use its
> >> own mixer which can do the same as Xfce's). I also use VLC's Phonon
> >> backend because Gstreamer is said to cause problems, but that also works
> >> on 3 other computers.
> > 
> I don't think it's KDE's fault, as it also happens when I kill KDE
> (service kdm4 stop) and do cat /dev/random > /dev/dsp. Of course, I have
> vol and pcm maxed out.
If your speakers are amplified, you should hear them "pop",
when the kernel finds, and creates/attaches the driver(s) to
it. Same would be true, if you were wearing your headphones
when bouncing your box.
I'm quite sure that the sound system is defaulting the the first
HDA presented. Which, in your case, is the one that is disabled/
non-operational. It's not KDE per se; but how the software
decides, by default, to hook sound up. If you had a sound
control panel available in KDE. You *should* be able to
*choose* which sound device to use. In your case, provided
it's even seen, it would be the *2nd* HDA. The sound control
panel should also present the *status* of the sound device
that it's using. Which, in your case, would indicate everything
as being "muted", and/or "unavailable".
On the box I'm writing this from, the HDA/CODEC is the
Realtek ALC893, as yours is. I have it hooked up to a 700 watt
external amplifier that I use as sound for my entire house.
With the amplifier turned on, if I bounce the box (reboot)
I hear a "pop" when the kernel detects/attaches to the
sound chip. These are the relevant, and only "sound" related
devices, created/listed in /dev:

cd0

dsp0.0
dsp1.0
dsp2.0
dsp4.0

midistat
mixer0
mixer1
mixer2
mixer4

sndstat

If I'm not mistaken, you're probably running GENERIC, which
has *also* loaded snd_hda, and possibly/probably, others.
Which accounts for the additional HDA listing in dmesg(8).
What I would do, if I were you, is build/install a
custom kernel, stripped of any device not available
on your MB. This is the first thing I do, after a fresh
install, and, as you're discovering, for good reason. :)
You should also find, by doing so, that your system performs
much better, as a result.
The *only* sound related listings I have in my KERNCONF file,
is:
speaker # PC beeper
sound # geneic sound
snd_hda # Realtec CODEC HDA
Last, and only because I have to say it;
you *are* sure that you have your headphones/speakers
plugged into the *correct* jack, right? ;-)
Hey! It happens. :)

--Chris

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