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Hacksign

Member

Registered: 2012-07-30

Posts: 137

no sound after a period of time

There is no sound after a period of time, reboot will fix the problem but will appear again.
I noticed there is a difference between  'have sound' and 'no sound' situation when opening alsamixer:
soud normal :

no sound:

It seems the default sound card device changed ?
I'm sure there is no problem of sound driver && I'm not mute the sound && the earphone is pluged in ....
Below is some information:

hacksign@XSign [16:40:53] : /var/log                                                                                                                                                                                                     
>> amixer -d
Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 65536
  Mono:
  Front Left: Playback 45495 [69%] [on]
  Front Right: Playback 45495 [69%] [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch cswitch-joined
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 65536
  Front Left: Capture 65536 [100%] [on]
  Front Right: Capture 65536 [100%] [on]
hacksign@XSign [16:38:07] : /var/log                                                                                                                                                                                                     
>> aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: MID [HDA Intel MID], device 0: CX20585 Analog [CX20585 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

any idears ?

Goresome

Member

From: Russia

Registered: 2011-12-06

Posts: 67

Re: no sound after a period of time

First picture looks like you use only alsa and then something launches pulseaudio[2] which grabs your card. Do you use pulse?
If you use pulseaudio make sure your DE starts it and you have pulseaudio-alsa installed. If you don't use it and it went rogue you have to dig deeper to get rid of it without hurting other apps that mey require it.

orschiro

Member

Registered: 2009-06-04

Posts: 2,136

Website

Re: no sound after a period of time

Have you looked at the alsa settings in the no sound scenario? I.e. change the sound card from pulse to alsa in alsamixer.

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@orschiro

Goresome

Member

From: Russia

Registered: 2011-12-06

Posts: 67

Re: no sound after a period of time

Pulse also could mute hw on startup, press F6 as said above to see if master channel is muted.

Last edited by Goresome (2015-01-15 11:21:35)