At Mon, 10 May 2010 21:56:36 +0200, Daniel Chen wrote: > > Hi, > > Attached please find a patch against sound-2.6 (also applicable to > stable trees) that fixes the reported distortion for Lenovo models on > CX20549. Applied now. Thanks. Takashi > > Best, > -Dan > [2 0001-ALSA-hda-Fix-0-dB-for-Lenovo-models-using-Conexant-C.patch <text/x-diff; US-ASCII (base64)>] > From 1e7c9f5188c8e110b90e42f820b15f4c3c7034b0 Mon Sep 17 00:00:00 2001 > From: Daniel T Chen <crimsun@xxxxxxxxxx> > Date: Mon, 10 May 2010 21:50:04 +0200 > Subject: [PATCH] ALSA: hda: Fix 0 dB for Lenovo models using Conexant CX20549 (Venice) > > Reference: http://mailman.alsa-project.org/pipermail/alsa-devel/2010-May/027525.html > > As reported on the mailing list, we also need to cap to the 0 dB offset > for Lenovo models, else the sound will be distorted. > > Reported-and-Tested-by: Tim Starling <tstarling@xxxxxxxxxxxxx> > Cc: <stable@xxxxxxxxxx> > Signed-off-by: Daniel T Chen <crimsun@xxxxxxxxxx> > --- > 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 c8e83f5..e863649 100644 > --- a/sound/pci/hda/patch_conexant.c > +++ b/sound/pci/hda/patch_conexant.c > @@ -1198,9 +1198,10 @@ static int patch_cxt5045(struct hda_codec *codec) > case 0x103c: > case 0x1631: > case 0x1734: > - /* 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) > + case 0x17aa: > + /* HP, Packard Bell, Fujitsu-Siemens & Lenovo 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) | > -- > 1.7.0.4 > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
