Lenovo X61 - regular sound clicking with power_save_controller=Y

[Alexander Sack]

when turning off/on audio using hot key I get a clicking on my speakers. Not sure if that is a bug.

This bug is about getting the same clicking without changing the volume at all. Sometimes it clicks every two minutes, sometimes every few seconds.

Seems to be a powering off/on clicking.

ProblemType: Bug
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: asac 2730 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf8220000 irq 17'
   Mixer name : 'Analog Devices AD1984'
   Components : 'HDA:11d41984,17aa20d6,00100400'
   Controls : 30
   Simple ctrls : 19
Date: Fri Oct 2 14:19:13 2009
DistroRelease: Ubuntu 9.10
Package: alsa-base 1.0.20+dfsg-1ubuntu4
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-11.36-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-11-generic i686
UserAsoundrc:
 pcm.headset {
        type bluetooth
        device "00:1A:45:83:CB:D5"
        profile "voice"
 }

[Alexander Sack (asac)]

this started when i upgraded my system a few days ago. before that i didnt upgrade for a week iirc. so regression window seems to be ~Oct 23 - 30

[Tony Espy (awe)]

I know sometime during this cycle, we enabled power-save in the ALSA HDA kernel code. This could be causing the amp to be power-cycled un-cleanly causing clicking sounds.

[Alexander Sack (asac)]

Very good idea ...

I read the alsa/powersave.txt kernel doc and found out about power_save and power_save_controller. So i tried this:

First disabling "power_save" (did not fix it) ...

 cat /sys/module/snd_hda_intel/parameters/power_save
   => 10
 echo 0 > /sys/module/snd_hda_intel/parameters/power_save

Resetting power_save back to default:

 echo 10 > /sys/module/snd_hda_intel/parameters/power_save

Next I checked power_save_controller and disabled it:

 cat /sys/module/snd_hda_intel/parameters/power_save_controller
   => Y
 echo N > /sys/module/snd_hda_intel/parameters/power_save_controller

... and yes! that fixed it!!

[Alexander Sack (asac)]

for the record, online version of the powersave.txt doc is here: http://www.mjmwired.net/kernel/Documentation/sound/alsa/powersave.txt

reading the last paragraph (line #37+) i wonder if just power_save would be enough? do we know the win we get from using power_save_controller?

[Daniel T Chen (crimsun)]

(Should be changed to affect linux, not alsa-driver)

We should just iterate over the pinctls for low-power state. Is there a data
sheet handy for this codec?

On Oct 7, 2009 6:00 AM, "Alexander Sack" <email address hidden> wrote:

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

--
Lenovo X61 - regular sound clicking with power_save_controller=Y
https://bugs.launchpad.net/bugs/440540
You received this bug notification because you are a member of Ubuntu
Audio Team, which is subscribed to alsa-driver in ubuntu.

Status in “alsa-driver” package in Ubuntu: Triaged

Bug description:
when turning off/on audio using hot key I get a clicking on my speakers. Not
sure if that is a bug.

This bug is about getting the same clicking without changing the volume at
all. Sometimes it clicks every two minutes, sometimes every few seconds.

Seems to be a powering off/on clicking.

ProblemType: Bug
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
  Subdevices: 2/2
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: asac 2730 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf8220000 irq 17'
  Mixer name : 'Analog Devices AD1984'
  Components : 'HDA:11d41984,17aa20d6,00100400'
  Controls : 30
  Simple ctrls : 19
Date: Fri Oct 2 14:19:13 2009
DistroRelease: Ubuntu 9.10
Package: alsa-base 1.0.20+dfsg-1ubuntu4
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-11.36-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-11-generic i686
UserAsoundrc:
 pcm.headset {
       type bluetooth
       device "00:1A:45:83:CB:D5"
       profile "voice"
 }

[Alexander Sack (asac)]

> We should just iterate over the pinctls for low-power state. Is there a data
> sheet handy for this codec?

Daniel, do you think that the real fix is realistic in karmic timeframe still? I would think everything that needs to get fixed in linux is unlikely to happen :/ ... maybe we can come up with a power_save_controller workaround in the meantime?

[Daniel T Chen (crimsun)]

Possible. I won't have free cycles until this weekend to look. In the
meantime, someone can take a look at the data sheet and see if anything
additional needs to be done for your codec.

At the worst, one can just revert the change in
/etc/modprobe.d/alsa-base.conf.

On Oct 7, 2009 7:21 AM, "Alexander Sack" <email address hidden> wrote:

> We should just iterate over the pinctls for low-power state. Is there a
data > sheet handy for thi...
Daniel, do you think that the real fix is realistic in karmic timeframe
still? I would think everything that needs to get fixed in linux is
unlikely to happen :/ ... maybe we can come up with a
power_save_controller workaround in the meantime?

--

Lenovo X61 - regular sound clicking with power_save_controller=Y
https://bugs.launchpad.net/bugs/440...

[Daniel T Chen (crimsun)]

Alexander, can you please test the alsa-base and linux-sound-base binary
packages in the ubuntu-audio-dev PPA? Make sure you confirm with a full
shutdown and power cycle.

On Oct 8, 2009 9:10 AM, "Launchpad Bug Tracker" <email address hidden>
wrote:

** Branch linked: lp:~crimsun/alsa-driver/ubuntu.new

--

Lenovo X61 - regular sound clicking with power_save_controller=Y

https://bugs.launchpad.net/bugs/440540 You received this bug notification
because you are a member o...

[Launchpad Janitor (janitor)]

This bug was fixed in the package alsa-driver - 1.0.20+dfsg-1ubuntu5

---------------
alsa-driver (1.0.20+dfsg-1ubuntu5) karmic; urgency=low

  * debian/rules: Don't reset the controller upon power-save
    (LP: #440540, #445135, #446987, #447602)

 -- Daniel T Chen <email address hidden> Thu, 08 Oct 2009 09:00:58 -0400

[Cimali (cimali)]

I have installed Ubuntu 9.10 Karmic and alsa-driver - 1.0.20+dfsg-1ubuntu5, but the problem persists, I solved by installing the new version of ALSA (1.0.21). I also tried to reinstall the existing package (1.0.20) without result.