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#1 2011-04-20 12:38:04

Akuma
Member
From: France
Registered: 2010-10-26
Posts: 35

Very low sound volume after 2.6.38.3-1 update

Hello,

Yesterday before logging off I updated the kernel from 2.6.38.2-1 to 2.6.38.3-1 sucessfully. Today I log in and notice that there's no sound coming from my speakers or headphones. So I pull the volume sliders to max and notice that sound works but is output with an extremely low volume. I checked alsamixer for muted channels but there wasn't, but some channels disappeared from there (front, surround, center...) but PCM and master were at max.
I switched phonon backends (KDE user) but no result. Anyways non-kde/phonon apps have the same issue.

Downgrading kernel version to 2.6.38.2-1 makes sound volume back to normal.

My Audio device (integrated) is : nVidia Corporation MCP61 High Definition Audio (rev a2), ruled by the snd_hda_intel module.

I never had sound/alsa issues since I am on Linux, so I'm noobish concerning this. Is there any idea(s) to make it work properly in the 2.6.38.3-1 kernel ?
Thanks in advance.


AMD Ryzen 3700X - ASUS ROG STRIX B550 - Sapphire RX 580 - KDE Plasma

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#2 2011-04-21 12:54:47

stqn
Member
Registered: 2010-03-19
Posts: 1,191
Website

Re: Very low sound volume after 2.6.38.3-1 update

Almost the same here: Intel HDA audio, no speaker sound with 2.6.38.3 but I get sound in my headphones (front output.)

Downgrading to 2.6.38.2 (or 2.6.32-lts) makes speakers work again.

I tried to blacklist snd_hda_codec_hdmi thinking that maybe sound was being output to HDMI, but that didn't change anything (besides snd_hda_codec_hdmi not being loaded, of course.)

I also compared the sound modules list between 2.6.38.2 and 2.6.38.3 but they are the same.

I also ran "sudo alsactl store" to get rid of the errors at boot but that didn't help either, except removing the errors. (I unfortunately didn't log these errors, it was alsactl complaining about the contents of the asound.state file...)

Edit: alsactl.store -> asound.state... :-\

Last edited by stqn (2011-04-21 12:57:31)

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#3 2011-04-21 16:27:53

gnumdk
Member
Registered: 2009-10-15
Posts: 175

Re: Very low sound volume after 2.6.38.3-1 update

I can confirm this bug...

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#4 2011-04-21 17:52:37

R00KIE
Forum Fellow
From: Between a computer and a chair
Registered: 2008-09-14
Posts: 4,734

Re: Very low sound volume after 2.6.38.3-1 update

Try running alsaconf, I've seen that sometimes it solves these kind of problems.


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#5 2011-04-21 18:33:14

Akuma
Member
From: France
Registered: 2010-10-26
Posts: 35

Re: Very low sound volume after 2.6.38.3-1 update

Never mind.

In fact after kernel update, after looking carefully at the mixer, my "front", "surround" and some other 5.1 related channels disappeared and some "Speaker" appeared. I pulled this one at max and sound works ok now. \o/
Didn't notice it because it has icon of the "line-in" channel, I thought it was something related to it.

Sorry for the inconvenience. Check your mixer carefully if you have the same issue.

Last edited by Akuma (2011-04-21 18:42:25)


AMD Ryzen 3700X - ASUS ROG STRIX B550 - Sapphire RX 580 - KDE Plasma

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#6 2011-04-21 18:59:57

stqn
Member
Registered: 2010-03-19
Posts: 1,191
Website

Re: Very low sound volume after 2.6.38.3-1 update

Ah well, it must be another bug in my case then...

I did have a "Speaker" thing in Mixer (Xfce) but it was a simple switch and turning it off or on didn't change anything. Kinda tired of rebooting for now so I'll check later, maybe at the next kernel update smile.

Edit: BTW, I tried alsaconf but it didn't find my sound card. Well, it found an ISA card... but that's not what I have, and sound didn't work any better after. I'll post in another thread if the problem persists, since it's not the same problem as the OP.

Last edited by stqn (2011-04-21 19:02:01)

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#7 2011-04-21 20:42:02

R00KIE
Forum Fellow
From: Between a computer and a chair
Registered: 2008-09-14
Posts: 4,734

Re: Very low sound volume after 2.6.38.3-1 update

stqn wrote:

I did have a "Speaker" thing in Mixer (Xfce) but it was a simple switch and turning it off or on didn't change anything. Kinda tired of rebooting for now so I'll check later, maybe at the next kernel update smile.

I would have checked the configs with alsamixer directly instead of dealing with the middle man (xfce's mixer).


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#8 2011-04-29 13:40:33

stqn
Member
Registered: 2010-03-19
Posts: 1,191
Website

Re: Very low sound volume after 2.6.38.3-1 update

Ah well, I just found out how to get back sound in my speakers: I have to unplug my headphones...

I can see how that makes sense, but I was actually happy with the previous behaviour before 2.6.38.3 (sound from both headphones and speakers.)

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#9 2011-04-29 13:47:17

karol
Archivist
Registered: 2009-05-06
Posts: 25,440

Re: Very low sound volume after 2.6.38.3-1 update

stqn wrote:

Ah well, I just found out how to get back sound in my speakers: I have to unplug my headphones...

I can see how that makes sense, but I was actually happy with the previous behaviour before 2.6.38.3 (sound from both headphones and speakers.)

I have a 'Headphone Jack Sense' item in my alsamixer menu: If it's set to 'off' you will get sound from both your speakers and headphones.

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