Volume Control for Chrome Add-On

conf_t · April 22, 2020 at 5:43 PM

Hi there,

I run a current LibreELEC setup on i3-6100 and analog audio. Within Kodi / Kodi core functions the volume settings works as wanted, but as soon as I start e.g. an Addon like Google Chrome the volume is set to its maximum and there seems nothing to be done against it. Is there someone who could tell me how to change the volume in add-ons? The usual Volume-Up&Down keys do not work.

**Da Flex** · April 22, 2020 at 8:27 PM Official Post

Please check whether editing the volume setting of guisettings.xml (bottom of the file) makes a difference for your apps.

conf_t · April 23, 2020 at 4:50 PM

I change this setting

Code

<audio>
<mute>false</mute>
<fvolumelevel>0.500000</fvolumelevel>
</audio>

to

Code

<audio>
<mute>false</mute>
<fvolumelevel>0.100000</fvolumelevel>
</audio>

no change at all.

There is no volume control at all possible when I open the Addon Google Chrome (installed from the defaul repository). Even the volume circle is missing, when I hit the volume key (which works fine while hearing music or watching tv).

**Da Flex** · April 23, 2020 at 8:31 PM Official Post

Thanks for testing. Next you can try the alsa mixer this way:

Code

amixer -c 0 set Digital 80%

AmandaB · February 22, 2021 at 2:22 AM

Quote from Da Flex
Thanks for testing. Next you can try the alsa mixer this way:
Code
amixer -c 0 set Digital 80%

Hello Da Flex,

I am in the same boat here, running Libreelec over HDMI and I tried amixer with every variation and it has no effect at all. I tried aplay -l.

I also ran the command

Code

 amixer | grep mixer

to list all available options there and I had Chrome open and tried them one by one, to no avail.

I understand that pulse-audio wouldn't work, since that is killed right before starting Chrome addon.

I am running:

libreelec (official): 9.2.6

Chrome addon: 9.2..0.104

Intel NUC

**Da Flex** · February 22, 2021 at 9:55 PM Official Post

It seems like Chrome has it's independent audio settings. You could search for audio config files inside the Chrome add-on folder.

Another approach is to install the "Kodi Audio Mixer" add-on and try to find the right fader for Chrome.

AmandaB · February 22, 2021 at 11:32 PM

Quote from Da Flex

It seems like Chrome has it's independent audio settings. You could search for audio config files inside the Chrome add-on folder.
Another approach is to install the "Kodi Audio Mixer" add-on and try to find the right fader for Chrome.

Thank you for the pointers Da Flex

That helped me to push it a tad further. Running the "Kodi Audio Mixer" add-on, I noticed that the only control that affected Chrome audio was 'IEC958',0.

The issue now is that I can only mute/unmute (toggle) it, but amixer won't allow me to change the volume up or down (or "Kodi Audio Mixer", for the matter -- there is no volume slider next to "IEC958",0).

The command that I ran was

Code

amixer -c 0 set IEC958,0 10%
amixer: Invalid command!

How would I investigate\fix this issue ?

**Da Flex** · February 23, 2021 at 12:42 AM Official Post

AmandaB Please post the output of this commands:

amixer
cat /proc/asound/cards

AmandaB · February 23, 2021 at 3:34 AM

Quote from Da Flex

AmandaB Please post the output of this commands:
amixer
cat /proc/asound/cards

I should have posted the output of both commands earlier. Sorry about that.

Code

# amixer
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 87
  Mono: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 87 [100%] [0.00dB] [on]
  Front Right: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Line Out',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 87 [100%] [0.00dB] [on]
  Front Right: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Mic Bost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',1
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',2
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',3
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',4
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',16
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Beep',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 63
  Front Left: Capture 0 [0%] [-17.25dB] [off]
  Front Right: Capture 0 [0%] [-17.25dB] [off]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'
Simple mixer control 'Internal Mic Bost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Loopback Mixing',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'



# cat /proc/asound/cards
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xa1310000 irq 127

Display More

I just wanted to let you know that there was a word censored here in "Simpe mixer control 'Internal Mic bost',0". The word here was B-O-O-S-T

**mglae** · February 23, 2021 at 4:45 PM

From the technical view the sound device is closed in Kodi and opened in Chrome.

To control the volume in Chrome install and test one of the Chrome Sound/Volume Apps.

AmandaB · February 23, 2021 at 5:38 PM

Quote from mglae

From the technical view the sound device is closed in Kodi and opened in Chrome.
To control the volume in Chrome install and test one of the Chrome Sound/Volume Apps.

Thank you for the suggestion mglae!

I cannot say that I tried them all, but I tried more than my fair share of them.

They either have no effect at all from the get go or they mute Chrome and once that happens no matter how high I set the volume, it stays muted.

AmandaB · February 25, 2021 at 3:19 AM

Quote from Da Flex

AmandaB Please post the output of this commands:
amixer
cat /proc/asound/cards

I provided the output of both commands in the previous reply.

Is there a conf file to edit ? I think the issue here is related to some definitions in a conf file.

Thanks,

**Da Flex** · February 25, 2021 at 10:03 AM Official Post

Try this: amixer -c 0 sset IEC958,0 50%-

AmandaB · February 25, 2021 at 1:16 PM

Quote from Da Flex

Try this: amixer -c 0 sset IEC958,0 50%-

That was worth a try

Code

# amixer -c 0 sset IEC958,0 50%-
amixer: Invalid command!

**Da Flex** · February 25, 2021 at 3:25 PM Official Post

Thanks for testing. What about amixer -c 0 sset IEC958 Default PCM,0 50%?

AmandaB · February 25, 2021 at 4:02 PM

Quote from Da Flex

Thanks for testing. What about amixer -c 0 sset IEC958 Default PCM,0 50%?

Thank you for your patience, Da Flex !

No output from amixer this time. but the changes had no effect on Chrome. I tried setting it to 5% then 100% after trying the 50% value.

**Da Flex** · February 25, 2021 at 5:20 PM Official Post

I think you understand what I did. Play around with other device channels from post #9. Maybe it's a good idea to disable auto-mute first ("Auto-Mute Mode").

I'm an RPi user, so I can't install Chrome to verify anything.

AmandaB · February 26, 2021 at 12:26 AM

Quote from Da Flex

I think you understand what I did. Play around with other device channels from post #9. Maybe it's a good idea to disable auto-mute first ("Auto-Mute Mode").
I'm an RPi user, so I can't install Chrome to verify anything.

Da Flex, Thank you for your help.

I am out of my depth here. I tried every possible combination from post #9 and I tried with auto-mute disabled and enabled but to no avail.

Hopefully someone would come along who can give me any pointers on why amixer has no effects on HDMI sound other than mute and unmute.

Volume Control for Chrome Add-On

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