Hi, Attached is a patch against sound-2.6 master HEAD (also applicable to 2.6.32.12 and 2.6.33.3) that fixes 0 dB for Packard Bell machines using Conexant CX20549. Without it, sound distorts horribly. Best, -Dan
From e2109922f4505fe08ef6e24673b4e4a91648fa4e Mon Sep 17 00:00:00 2001 From: Daniel T Chen <crimsun@xxxxxxxxxx> Date: Wed, 28 Apr 2010 18:00:11 -0400 Subject: [PATCH] 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@xxxxxxxxxx> Signed-off-by: Daniel T Chen <crimsun@xxxxxxxxxx> --- sound/pci/hda/patch_conexant.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index 509a104..b9644e4 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -1196,9 +1196,10 @@ 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, -- 1.7.0.4
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