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    Subject[PATCH 3.19.y-ckt 141/196] ALSA: hda - Fixing background noise on Dell Inspiron 3162
    Date
    3.19.8-ckt16 -stable review patch.  If anyone has any objections, please let me know.

    ---8<------------------------------------------------------------

    From: Kai-Heng Feng <kaihengfeng@gmail.com>

    commit 3b43b71f05d3ecd01c4116254666d9492301697d upstream.

    After login to the desktop on Dell Inspiron 3162,
    there's a very loud background noise comes from the builtin speaker.
    The noise does not go away even if the speaker is muted.

    The noise disappears after using the aamix fixup.

    Codec: Realtek ALC3234
    Address: 0
    AFG Function Id: 0x1 (unsol 1)
    Vendor Id: 0x10ec0255
    Subsystem Id: 0x10280725
    Revision Id: 0x100002
    No Modem Function Group found

    BugLink: http://bugs.launchpad.net/bugs/1549620
    Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
    Signed-off-by: Takashi Iwai <tiwai@suse.de>
    [ luis: backported to 3.16: adjusted context ]
    Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
    Signed-off-by: Kamal Mostafa <kamal@canonical.com>
    ---
    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 ba6fada..6bfe710 100644
    --- a/sound/pci/hda/patch_realtek.c
    +++ b/sound/pci/hda/patch_realtek.c
    @@ -4379,6 +4379,7 @@ enum {
    ALC275_FIXUP_DELL_XPS,
    ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE,
    ALC293_FIXUP_LENOVO_SPK_NOISE,
    + ALC255_FIXUP_DELL_SPK_NOISE,
    };

    static const struct hda_fixup alc269_fixups[] = {
    @@ -4918,6 +4919,12 @@ static const struct hda_fixup alc269_fixups[] = {
    .chained = true,
    .chain_id = ALC269_FIXUP_THINKPAD_ACPI
    },
    + [ALC255_FIXUP_DELL_SPK_NOISE] = {
    + .type = HDA_FIXUP_FUNC,
    + .v.func = alc_fixup_disable_aamix,
    + .chained = true,
    + .chain_id = ALC255_FIXUP_DELL1_MIC_NO_PRESENCE
    + },
    };

    static const struct snd_pci_quirk alc269_fixup_tbl[] = {
    @@ -4948,6 +4955,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
    SND_PCI_QUIRK(0x1028, 0x06d9, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
    SND_PCI_QUIRK(0x1028, 0x06da, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
    SND_PCI_QUIRK(0x1028, 0x0704, "Dell XPS 13", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
    + SND_PCI_QUIRK(0x1028, 0x0725, "Dell Inspiron 3162", ALC255_FIXUP_DELL_SPK_NOISE),
    SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
    SND_PCI_QUIRK(0x1028, 0x164b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
    SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),
    --
    2.7.0
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