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ALSA: hda: Fix 0 dB for Packard Bell models using Conexant CX20549 (Venice) 

BugLink: https://launchpad.net/bugs/541802

The OR's hardware distorts at PCM 100% because it does not correspond to
0 dB. Fix this in patch_cxt5045() for all Packard Bell models.

Reported-by: Valombre
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Daniel T Chen 2010-04-28 18:00:11 -04:00 committed by Takashi Iwai
parent 231f50bc0e
commit 8f0f5ff677
1 changed files with 3 additions and 2 deletions
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5
sound/pci/hda/patch_conexant.c
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@ -1195,9 +1195,10 @@ static int patch_cxt5045(struct hda_codec *codec)
switch (codec->subsystem_id >> 16) {
case 0x103c:
case 0x1631:
case 0x1734:
/* HP & Fujitsu-Siemens laptops have really bad sound over 0dB
* on NID 0x17. Fix max PCM level to 0 dB
/* HP, Packard Bell, & 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,