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Vandr0iy
n00b
Joined: 30 May 2015
Posts: 35
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 Posted: Thu Nov 19, 2015 9:55 am Post subject: Pulseaudio not powersaving features |
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Hi, ladies and gentoomen!
I got a weird audio issue: my speakers are mute and, if I plug any 3.5 jack in I get some powerful whitenoise with crackling.
All of this goes on until I start pavucontrol. While it is in execution, everything works fine.
Furthermore, all of this started to happen after I installed laptop-mode-tools and powertop, so I believe that it relates to some powersaving setting.
More info:
lsmod output: http://sprunge.us/JJDW
aplay -l output:
| Code: | **** List of PLAYBACK Hardware Devices ****
card 1: PCH [HDA Intel PCH], device 0: ALC3226 Analog [ALC3226 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0 |
pacmd list-sinks: http://sprunge.us/hGWL
Thank you in advance.
P.S. I had to rewrite this because after I finished instead of submitting the form the site redirected me to the login screen, again (more than one time), which made me enrage. Is it normal behavior, or my browsers fault? |
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Vandr0iy
n00b
Joined: 30 May 2015
Posts: 35
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| Posted: Tue Nov 24, 2015 11:43 am Post subject: |
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bump...
Help me, please, - it's pretty obnoxious having to open pavucontrol on every boot.
Thank you in advance. |
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Logicien
Veteran
Joined: 16 Sep 2005
Posts: 1555
Location: Montréal
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| Posted: Tue Nov 24, 2015 9:13 pm Post subject: |
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Well, have you try to disable laptop-mode-tools service and see if this white noise occur again (after a shutdown)? You may have to check in laptop-mode-tools configuration files what it does to powersave the sound card.
If powersaving is in cause, you can try to disable disable the powersaving for the sound card in laptop-mode-tools. This feature can be disable too in the Intel sound card module with the parameter
| Code: | | echo 'options snd_hda_intel power_save=0' > /etc/modprobe.d/snd_hda_intel.conf |
Reboot or unload and reload the snd_hda_intel related modules.
There may have a better solution I ignore in Pulseaudio configuration. The prior is more a try to workaround the problem. Maybe just unmute the sound card with Alsa mixer boot script before plug the jack in can resolv the problem.
_________________
Paul |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Tue Dec 01, 2015 12:09 am Post subject: |
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What you have there is a common symptom of crappy HDA-Intel hardware: when your card goes into low power mode it doesn't actually bother to power off the DAC correctly, and it starts acting as an AM radio receiver for whatever RF noise your laptop's spewing out.
If the modprobe method doesn't help, here's a suitably crappy workaround to keep the card alive, throw it in an autostart script or whatever:
| Code: | | pacat --rate=100 /dev/zero |
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