[alsa-devel] Laptop speakers nonfunctional, jacks functional

[Takashi Iwai]

At Sat, 4 Jul 2009 19:15:23 +0200,
Ludwig Maes wrote:
> 
> Thanks for your attention,
> I dont have /dev/snd/hwC0D0
> but I do have
> /dev/snd/seq
> /dev/snd/timer
> /dev/sndstat
> I guess I should try it on seq, but I'll await your advice

No, don't, that's wrong!

It's an odd situation.  I guess you didn't install the driver properly.
Otherwise you must have /dev/snd/control*, PCM, else.

How to install the alsa-driver externally depends on the distro.
I'd advise you to ask on a distro forum about it at first.
The rest debugging starts after you can install the sound drivers properly.


thanks,

Takashi


> friendly greetings
> Ludwig
> 
> 2009/6/30 Takashi Iwai <tiwai at suse.de>
> 
>     At Mon, 29 Jun 2009 20:06:47 +0200,
>     Ludwig Maes wrote:
>     >
>     > Tried the snapshot,
>     > still the same, alsa-info.txt attached
>    
>     Hm, just through a quick look at the output, there is no obvious
>     problem.  It's only the problem from speaker, not about the headphone,
>     right?
>    
>     If so, the problem is likely the missing amplifier setup, which is
>     usually powered up via COEF verbs or GPIO verbs (ALC888/1200 have no
>     EAPD verbs).
>    
>     Try to install hda-verb program and check the command below.
>    
>            # hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 7
>            # hda-verb /dev/snd/hwC0D0 0x20 GET_PROC_COEF 0
>    
>     Which value do you get?  What happens if you set
>    
>            # hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 7
>            # hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x3060
>     or
>            # hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 7
>            # hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x3070
>     or
>            # hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 7
>            # hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x0830
>     or so?
> 
>     Takashi
> 
>