This is a note to let you know that I've just added the patch titled
ALSA: hda - Fix noise problems on Thinkpad T440s
to the 4.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-hda-fix-noise-problems-on-thinkpad-t440s.patch
and it can be found in the queue-4.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9a811230481243f384b8036c6a558bfdbd961f78 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@xxxxxxx>
Date: Wed, 9 Dec 2015 15:17:43 +0100
Subject: ALSA: hda - Fix noise problems on Thinkpad T440s
From: Takashi Iwai <tiwai@xxxxxxx>
commit 9a811230481243f384b8036c6a558bfdbd961f78 upstream.
Lenovo Thinkpad T440s suffers from constant background noises, and it
seems to be a generic hardware issue on this model:
https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/T440s-speaker-noise/td-p/1339883
As the noise comes from the analog loopback path, disabling the path
is the easy workaround.
Also, the machine gives significant cracking noises at PM suspend. A
workaround found by trial-and-error is to disable the shutup callback
currently used for ALC269-variant.
This patch addresses these noise issues by introducing a new fixup
chain. Although the same workaround might be applicable to other
Thinkpad models, it's applied only to T440s (17aa:220c) in this patch,
so far, just to be safe (you chicken!). As a compromise, a new model
option string "tp440" is provided now, though, so that owners of other
Thinkpad models can test it more easily.
Bugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=958504
Reported-and-tested-by: Tim Hardeck <thardeck@xxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/pci/hda/patch_realtek.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4214,6 +4214,18 @@ static void alc_fixup_tpt440_dock(struct
}
}
+/* additional fixup for Thinkpad T440s noise problem */
+static void alc_fixup_tpt440(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+{
+ struct alc_spec *spec = codec->spec;
+
+ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+ spec->shutup = alc_no_shutup; /* reduce click noise */
+ spec->gen.mixer_nid = 0; /* reduce background noise */
+ }
+}
+
static void alc_shutup_dell_xps13(struct hda_codec *codec)
{
struct alc_spec *spec = codec->spec;
@@ -4588,6 +4600,7 @@ enum {
ALC255_FIXUP_HEADSET_MODE_NO_HP_MIC,
ALC293_FIXUP_DELL1_MIC_NO_PRESENCE,
ALC292_FIXUP_TPT440_DOCK,
+ ALC292_FIXUP_TPT440,
ALC283_FIXUP_BXBT2807_MIC,
ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED,
ALC282_FIXUP_ASPIRE_V5_PINS,
@@ -5061,6 +5074,12 @@ static const struct hda_fixup alc269_fix
.chained = true,
.chain_id = ALC269_FIXUP_LIMIT_INT_MIC_BOOST
},
+ [ALC292_FIXUP_TPT440] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_tpt440,
+ .chained = true,
+ .chain_id = ALC292_FIXUP_TPT440_DOCK,
+ },
[ALC283_FIXUP_BXBT2807_MIC] = {
.type = HDA_FIXUP_PINS,
.v.pins = (const struct hda_pintbl[]) {
@@ -5342,7 +5361,7 @@ static const struct snd_pci_quirk alc269
SND_PCI_QUIRK(0x17aa, 0x21fb, "Thinkpad T430s", ALC269_FIXUP_LENOVO_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2203, "Thinkpad X230 Tablet", ALC269_FIXUP_LENOVO_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2208, "Thinkpad T431s", ALC269_FIXUP_LENOVO_DOCK),
- SND_PCI_QUIRK(0x17aa, 0x220c, "Thinkpad T440s", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x220c, "Thinkpad T440s", ALC292_FIXUP_TPT440),
SND_PCI_QUIRK(0x17aa, 0x220e, "Thinkpad T440p", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2210, "Thinkpad T540p", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2211, "Thinkpad W541", ALC292_FIXUP_TPT440_DOCK),
@@ -5442,6 +5461,7 @@ static const struct hda_model_fixup alc2
{.id = ALC283_FIXUP_CHROME_BOOK, .name = "alc283-dac-wcaps"},
{.id = ALC283_FIXUP_SENSE_COMBO_JACK, .name = "alc283-sense-combo"},
{.id = ALC292_FIXUP_TPT440_DOCK, .name = "tpt440-dock"},
+ {.id = ALC292_FIXUP_TPT440, .name = "tpt440"},
{}
};
Patches currently in stable-queue which might be from tiwai@xxxxxxx are
queue-4.3/alsa-hda-fix-headphone-mic-input-on-a-few-dell-alc293-machines.patch
queue-4.3/alsa-hda-add-fixup-for-acer-aspire-one-cloudbook-14.patch
queue-4.3/alsa-usb-audio-add-sample-rate-inquiry-quirk-for-audioquest-dragonfly.patch
queue-4.3/alsa-hda-realtek-dell-xps-one-alc3260-speaker-no-sound-after-resume-back.patch
queue-4.3/alsa-hda-apply-hp-headphone-fixups-more-generically.patch
queue-4.3/alsa-hda-set-codec-to-d3-at-reboot-shutdown-on-thinkpads.patch
queue-4.3/alsa-hda-realtek-fix-silent-headphone-output-on-macpro-4-1-v2.patch
queue-4.3/alsa-rme96-fix-unexpected-volume-reset-after-rate-changes.patch
queue-4.3/alsa-fireworks-bebob-oxfw-dice-enable-to-make-as-built-in.patch
queue-4.3/alsa-hda-set-skl-hda-controller-power-at-freeze-and-thaw.patch
queue-4.3/alsa-hda-add-inverted-dmic-for-packard-bell-dots.patch
queue-4.3/alsa-hda-add-intel-lewisburg-device-ids-audio.patch
queue-4.3/alsa-hda-add-keycode-map-for-alc-input-device.patch
queue-4.3/alsa-hda-add-a-fixup-for-thinkpad-x1-carbon-2nd.patch
queue-4.3/alsa-hda-skip-eld-notification-during-system-suspend.patch
queue-4.3/alsa-hda-add-mic-mute-hotkey-quirk-for-lenovo-thinkcentre-aio.patch
queue-4.3/alsa-hda-disable-64bit-address-for-creative-hda-controllers.patch
queue-4.3/alsa-hda-fix-noise-on-dell-latitude-e6440.patch
queue-4.3/alsa-hda-ca0132-quirk-for-alienware-17-2015.patch
queue-4.3/alsa-usb-audio-add-a-more-accurate-volume-quirk-for-audioquest-dragonfly.patch
queue-4.3/alsa-hda-fix-headphone-noise-after-dell-xps-13-resume-back-from-s3.patch
queue-4.3/alsa-hda-fix-noise-problems-on-thinkpad-t440s.patch
queue-4.3/alsa-hda-fix-lost-4k-bdl-boundary-workaround.patch
queue-4.3/alsa-hda-apply-pin-fixup-for-hp-probook-6550b.patch
queue-4.3/alsa-hda-fixing-speaker-noise-on-the-two-latest-thinkpad-models.patch
queue-4.3/alsa-hda-apply-click-noise-workaround-for-thinkpads-generically.patch
queue-4.3/alsa-hda-fix-noise-on-gigabyte-z170x-mobo.patch
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