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ALSA: hda: Fix 0 dB for Packard Bell models using Conexant CX20549 (V…
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…enice)

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>
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crimsun authored and tiwai committed May 5, 2010
1 parent 231f50b commit 8f0f5ff
Showing 1 changed file with 3 additions and 2 deletions.
5 changes: 3 additions & 2 deletions sound/pci/hda/patch_conexant.c
Expand Up @@ -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,
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