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Commit 0b587fc4 authored by Daniel T Chen's avatar Daniel T Chen Committed by Takashi Iwai
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ALSA: hda: Fix max PCM level to 0 dB for Fujitsu-Siemens laptops using CX20549 (Venice) 

BugLink: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4792



Cristian reported that these models have really bad sound above 6 dB
and proposed the original patch. I've updated the comment to reflect
this change.

Signed-off-by: default avatarDaniel T Chen <crimsun@ubuntu.com>
Reported-by: Cristian Klein
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 95a618bd

sound/pci/hda/patch_conexant.c

+4 −3
Original line number Diff line number Diff line
@@ -1171,9 +1171,10 @@ static int patch_cxt5045(struct hda_codec *codec) 


	switch (codec->subsystem_id >> 16) {

	case 0x103c:

		/* HP laptop has a really bad sound over 0dB on NID 0x17.

		 * Fix max PCM level to 0 dB

		 * (originall it has 0x2b steps with 0dB offset 0x14)

	case 0x1734:

		/* HP & 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,

					  (0x14 << AC_AMPCAP_OFFSET_SHIFT) |