[alsa-devel] No sound on Quanta KN1 with kernel 3.4
tiwai at suse.de
Wed Apr 18 12:27:09 CEST 2012
At Wed, 18 Apr 2012 11:55:45 +0200,
Uros Vampl wrote:
> On 18.04.12 10:05, Takashi Iwai wrote:
> > > > It's a laptop. There's no sound, not from internal speakers, not from
> > > > headphone out. There is a mild crackling sound when the module is
> > > > loaded, but that's it. The patch does not change things.
> > >
> > > OK, I'll send another patch tomorrow. But the previous patch should
> > > work, still. Make sure that you adjusted and unmuted the mixer
> > > elements after applying the patch. There should be some new mixer
> > > elements.
> > >
> > > If it still doesn't work after the mixer adjustment, give alsa-info.sh
> > > output again.
> > Also, there are many bogus input pins on your device.
> > Which physical inputs are on the machine? BIOS advertises that there
> > are front-mic, rear-mic, line-in, aux-in and CD. Do all these work
> > properly? You can choose it from "Input Source" mixer enum.
> > Also, it also advertises SPDIF input and output. Are really both on
> > your machine?
> The only physical input is mic-in. But there's also an integrated
> microphone. In kernel 3.3 the intergrated mic is simply "Mic" and works
> for both playback and capture. I don't have an external mic to test.
You can use even a headphone although the recording level is low.
Just plug your headphone into the mic jack and shout.
> In kernel 3.4 I still don't have sound, even with the patch (I unmuted
> everything there was to unmute, then muted SPDIF, nothing produced
> sound), so I could only test capture - "Rear Mic" captures from the
> integrated microphone.
> I assume "Front Mic" would work for an external microphone, and maybe CD
> is for listening to audio CDs? The CD drive broke a few years back, so I
> can't test it.
On most of laptops, it's already deprecated. So we can drop it.
> No idea about SPDIF-in,
If it has no jack, then we can drop it.
> but headphone-out doubles as SPDIF-out. There's
> a red light inside the jack, and if I unmute SPDIF, the light goes on. I
> remember it was like that also in Windows. I don't have appropriate
> hardware to test if it actually works.
OK, then it must be kept.
> Attached is a alsa-info.txt with the patch. There are some differences
> compared to without patch, but like I said above, still no sound.
Then the speaker pin is not 0x0f but 0x11.
I'll cook up the test patch based on the current information and post
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