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| author |   Kai-Heng Feng <kai.heng.feng@canonical.com> | 2020-08-10 21:31:06 +0800 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2020-08-10 16:02:18 +0200 |
| commit | 34dedd2a83b241ba6aeb290260313c65dc58660e (patch) | |
| tree | 1cf4fc6176737cdc24ab6ec4f1194e9267542062 /sound | |
| parent | ALSA: usb-audio: add quirk for Pioneer DDJ-RB (diff) | |
| download | linux-dev-34dedd2a83b241ba6aeb290260313c65dc58660e.tar.xz linux-dev-34dedd2a83b241ba6aeb290260313c65dc58660e.zip | |
ALSA: usb-audio: Disable Lenovo P620 Rear line-in volume control
The USB device (0x17aa:0x1046) that support Lenovo P620 rear panel
line-in claim to support volume control, but it doens't seem to have an
AMP, so when line-in volume lowers below 80, nothing gets recorded
anymore.
Disable the volume control to workaround the issue.
Fixes: f8c11eb7da4a ("ALSA: usb-audio: Add support for Lenovo ThinkStation P620")
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://lore.kernel.org/r/20200810133108.31580-1-kai.heng.feng@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/mixer_maps.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c index c369c81e74c4..5b43e9e40e49 100644 --- a/sound/usb/mixer_maps.c +++ b/sound/usb/mixer_maps.c @@ -371,6 +371,7 @@ static const struct usbmix_name_map asus_rog_map[] = { }; static const struct usbmix_name_map lenovo_p620_rear_map[] = { + { 19, NULL, 2 }, /* FU, Volume */ { 19, NULL, 12 }, /* FU, Input Gain Pad */ {} }; |