[alsa-devel] [PATCH] Enable loudspeakers in ALC889 for Acers and others

[Takashi Iwai]

At Wed, 1 Jul 2009 20:04:36 +0200 (CEST),
ruben at ugr.es wrote:
> 
> Hi all
> 
> I managed to get sound working on my acer 6935, which has an ALC889 driven
> by the intel_hda driver
> The lack of sound seems to appear in other laptops as well.
> 
> The bug report is at
>  https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4261
> 
> I know Takashi Iwai is familiar with the problems, since I used his
> workaround with hda-verb to get it working initially, so if he is free and
> wants to get this fixed, I'd be grateful (if anybody else can have a look,
> that'd be great as well).
> 
> The patch is very easy (you can download it at the url above).
> I added
> snd_hda_codec_write(codec, 0x15, 0, AC_VERB_SET_EAPD_BTLENABLE, 2);
> at the end of patch_alc883 before the return.
> 
> Please check whether there is a problem with other models; in that case a
> new patch_alc889 which calls patch_alc883 plus the line can be added, or
> more detailed checks on the pci ids can be done.

Does this happen even with the latest alsa-driver snapshot?
  ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-snapshot.tar.gz


Takashi