From: David Henningsson Date: Tue, 21 Apr 2015 08:48:46 +0000 (+0200) Subject: ALSA: hda - fix "num_steps = 0" error on ALC256 X-Git-Tag: v3.19.7~93 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2652931b983f78460691305d935e7be8a1103d39;p=thirdparty%2Fkernel%2Fstable.git ALSA: hda - fix "num_steps = 0" error on ALC256 commit 7d1b6e29327428993ba568bdd8c66734070f45e0 upstream. The ALC256 does not have a mixer nid at 0x0b, and there's no loopback path (the output pins are directly connected to the DACs). This commit fixes an "num_steps = 0 for NID=0xb (ctl = Beep Playback Volume)" error (and as a result, problems with amixer/alsamixer). If there's pcbeep functionality, it certainly isn't controlled by setting an amp on 0x0b, so disable beep functionality (at least for now). BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1446517 Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index a39b017907235..1b96c53480e32 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5454,6 +5454,7 @@ static int patch_alc269(struct hda_codec *codec) break; case 0x10ec0256: spec->codec_variant = ALC269_TYPE_ALC256; + spec->gen.mixer_nid = 0; /* ALC256 does not have any loopback mixer path */ break; } @@ -5467,8 +5468,8 @@ static int patch_alc269(struct hda_codec *codec) if (err < 0) goto error; - if (!spec->gen.no_analog && spec->gen.beep_nid) - set_beep_amp(spec, 0x0b, 0x04, HDA_INPUT); + if (!spec->gen.no_analog && spec->gen.beep_nid && spec->gen.mixer_nid) + set_beep_amp(spec, spec->gen.mixer_nid, 0x04, HDA_INPUT); codec->patch_ops = alc_patch_ops; #ifdef CONFIG_PM