kernel-packages team mailing list archive

[David Henningsson <1529624@xxxxxxxxxxxxxxxxxx>]

Inform userspace that one channel of the internal mic has reversed
polarity, so it does not attempt to add both channels together and
end up with silence.

Cc: stable@xxxxxxxxxxxxxxx
Reported-by: Andrzej Mendel <andrzej.mendel@xxxxxxxxx>
Alsa-info: http://www.alsa-project.org/db/?f=3088f82a0cf977855f92af9db8ad406c04f71efa
BugLink: https://bugs.launchpad.net/bugs/1529624
Signed-off-by: David Henningsson <david.henningsson@xxxxxxxxxxxxx>
---
 sound/pci/hda/patch_realtek.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 3a89d82..2fdda51 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4666,6 +4666,7 @@ enum {
 	ALC290_FIXUP_SUBWOOFER,
 	ALC290_FIXUP_SUBWOOFER_HSJACK,
 	ALC269_FIXUP_THINKPAD_ACPI,
+	ALC269_FIXUP_DMIC_THINKPAD_ACPI,
 	ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
 	ALC255_FIXUP_DELL2_MIC_NO_PRESENCE,
 	ALC255_FIXUP_HEADSET_MODE,
@@ -5103,6 +5104,12 @@ static const struct hda_fixup alc269_fixups[] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = hda_fixup_thinkpad_acpi,
 	},
+	[ALC269_FIXUP_DMIC_THINKPAD_ACPI] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc_fixup_inv_dmic,
+		.chained = true,
+		.chain_id = ALC269_FIXUP_THINKPAD_ACPI,
+	},
 	[ALC255_FIXUP_DELL1_MIC_NO_PRESENCE] = {
 		.type = HDA_FIXUP_PINS,
 		.v.pins = (const struct hda_pintbl[]) {
@@ -5457,6 +5464,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
 	SND_PCI_QUIRK(0x17aa, 0x2233, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
 	SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
+	SND_PCI_QUIRK(0x17aa, 0x3902, "Lenovo E50-80", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
 	SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
 	SND_PCI_QUIRK(0x17aa, 0x3978, "IdeaPad Y410P", ALC269_FIXUP_NO_SHUTUP),
 	SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
-- 
1.9.1


** Changed in: alsa-driver (Ubuntu)
       Status: New => In Progress

** Changed in: alsa-driver (Ubuntu)
     Assignee: (unassigned) => David Henningsson (diwic)

** Package changed: alsa-driver (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
     Assignee: David Henningsson (diwic) => (unassigned)

-- 
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https://bugs.launchpad.net/bugs/1529624

Title:
  Lenovo E50-80 inverted microphone not detected properly

Status in linux package in Ubuntu:
  In Progress

Bug description:
  System: Lenovo E50-80 with Ubuntu 15.10. Tested with both kernel
  4.2.0-22-generic from official repos and 4.4.0-040400rc6-generic from
  Mainline Kernel repo.

  Alsa information: http://www.alsa-
  project.org/db/?f=3088f82a0cf977855f92af9db8ad406c04f71efa

  Internal microphone does not pick up sound by default. When I mute one
  channel, it works (this is not a good workaround since some
  application, such as Facebook Messenger, unmute both channels and set
  them to the same level automatically).

  Adding model=inv-dmic to snd-hda-intel module options does not change
  a thing.

  Hope that helps, tell me if you need more info.

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