Re: No sound from speakers with Realtek ALC3226

[Takashi Iwai <tiwai@suse.de>]

At Wed, 25 Feb 2015 13:08:29 +0400,
John Frankish wrote:
> 
> > > 
> > > I posted this on the alsa-user list, but did not get a reply.
> > > 
> > > Although it occasionally works, I am usually unable to get any sound 
> > > out of the speakers on a dell latitude e7240 using alsa-1.0.28 and 
> > > linux-3.16.6 - see details at the end of the post.
> >
> > If so, Windows or BIOS is the problem.  It doesn't set up the pin
> configuration properly Linux driver relies on.
> >
> I just updated the bios to the latest version, but no change :(
> >
> > If you get the status where the speaker works (e.g. after Windows clean
> reboot), try to take alsa-info.sh snapshot.  Run alsa-> info.sh with
> --no-upload option, and save the generated output.  Then, take another
> alsa-info.sh snapshot while the speaker > doesn't work.  Compare these two
> outputs.  (At best, attach both (compressed) files.)
> >
> Alsa_info_works and alsa_info_no_works attached - diff didn't show an
> obvious difference between getting sound from the speakers and not getting
> sound from the speakers.

OK, then this is not about the pin configuration, but likely the EAPD
setup BIOS does.

Did you try the newer kernels?  There has been a fix for EAPD control,
and this might already fix your problem.


Takashi