Popping sound after resuming from suspension on Lenovo ThinkPad T530

[Yuriy Vidineev]

After reboot sound works as expected

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: alsa-base 1.0.25+dfsg-0ubuntu3
Uname: Linux 3.8.0-030800rc2-generic x86_64
ApportVersion: 2.8-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: adept 18532 F.... pulseaudio
Date: Mon Jan 14 09:38:41 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2012-12-23 (21 days ago)
InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.1)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Black Mic, Left
Symptom_Type: No auto-switch between inputs
Title: [2359CTO, Realtek ALC269VC, Black Mic, Left] No autoswitch
UpgradeStatus: Upgraded to raring on 2012-12-23 (21 days ago)
dmi.bios.date: 11/14/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: G4ET65WW (2.07 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2359CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrG4ET65WW(2.07):bd11/14/2012:svnLENOVO:pn2359CTO:pvrThinkPadT530:rvnLENOVO:rn2359CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2359CTO
dmi.product.version: ThinkPad T530
dmi.sys.vendor: LENOVO

[Daniel Letzeisen (dtl131)]

It might be the audio codec's power-saving feature:
"The power-saving feature might cause audible click noises at each
power-down/up depending on the device. Some of them might be
solvable, but some are hard, I'm afraid... Thus, if you hear noises, suspect first the
power-saving. See /sys/module/snd_hda_intel/parameters/power_save to
check the current value. If it's non-zero, the feature is turned on."
http://git.alsa-project.org/?p=alsa-kernel.git;a=blob_plain;f=Documentation/sound/alsa/HD-Audio.txt;hb=HEAD

[Yuriy Vidineev (adeptg)]

Dave, thank you for the answer. Changing value of /sys/module/snd_hda_intel/parameters/power_save on-the-fly didn't help me. But definitely it's something about power saving. Because if I suspend/resume laptop on AC power - there is no problem with sound. If I do the same operations on battery power - sound is popping (I checked with aplay /usr/share/sounds/alsa/Front_Center.wav). If with "bad" sound I connect laptop to AC power - sound became normal. So maybe this is something in /sys that can help me. I will try to find it.
I updated BIOS to latest version - it didn't help.
I also checked with Kubuntu 12.10 live cd - there is no sound at all after suspend on battery power (after suspend on AC power it's all ok)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.