[alsa-devel] Conexant CX20549 (Venice) PCM volume to loud

[Takashi Iwai]

At Wed, 25 Nov 2009 18:37:36 -0500,
Daniel Chen wrote:
> 
> Hi,
> 
> On Wed, Nov 25, 2009 at 11:41 AM, Cristian KLEIN <cristiklein at gmail.com> wrote:
> > Could anybody please have a look at this bug:
> > https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4792
> 
> I've spun the attached patch against current sound-2.6 HEAD. Thanks
> for chasing this!

Thanks, applied now.


Takashi

> 
> -Dan
> [2 0001-ALSA-hda-Fix-max-PCM-level-to-0-dB-for-Fujitsu-Sieme.patch <text/x-diff; US-ASCII (base64)>]
> From 767036ef9f1c05fe2fc0e9fa226b4f33076e9703 Mon Sep 17 00:00:00 2001
> From: Daniel T Chen <crimsun at ubuntu.com>
> Date: Wed, 25 Nov 2009 18:27:20 -0500
> Subject: [PATCH] ALSA: hda: Fix max PCM level to 0 dB for Fujitsu-Siemens laptops using CX20549 (Venice)
> 
> BugLink: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4792
> 
> Cristian reported that these models have really bad sound above 6 dB
> and proposed the original patch. I've updated the comment to reflect
> this change.
> 
> Signed-off-by: Daniel T Chen <crimsun at ubuntu.com>
> Reported-by: Cristian Klein
> ---
>  sound/pci/hda/patch_conexant.c |    7 ++++---
>  1 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
> index 36dd5a6..60810ba 100644
> --- a/sound/pci/hda/patch_conexant.c
> +++ b/sound/pci/hda/patch_conexant.c
> @@ -1171,9 +1171,10 @@ static int patch_cxt5045(struct hda_codec *codec)
>  
>  	switch (codec->subsystem_id >> 16) {
>  	case 0x103c:
> -		/* HP laptop has a really bad sound over 0dB on NID 0x17.
> -		 * Fix max PCM level to 0 dB
> -		 * (originall it has 0x2b steps with 0dB offset 0x14)
> +	case 0x1734:
> +		/* HP & Fujitsu-Siemens laptops have really bad sound over 0dB
> +		 * on NID 0x17. Fix max PCM level to 0 dB
> +		 * (originally it has 0x2b steps with 0dB offset 0x14)
>  		 */
>  		snd_hda_override_amp_caps(codec, 0x17, HDA_INPUT,
>  					  (0x14 << AC_AMPCAP_OFFSET_SHIFT) |
> -- 
> 1.6.3.3
>