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Bug 2994 - kmix does not shows 'Master' channel for output, only for input; alsamixer shows them properly
Summary: kmix does not shows 'Master' channel for output, only for input; alsamixer sh...
Status: RESOLVED FIXED
Alias: None
Product: TDE
Classification: Unclassified
Component: tdemultimedia (show other bugs)
Version: R14.0.x [Trinity]
Hardware: All Debian Stretch
: P5 normal
Assignee: Michele Calgaro
URL:
Depends on:
Blocks: R14.0.9
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Reported: 2019-01-16 14:00 CST by TCH
Modified: 2020-05-07 05:21 CDT (History)
3 users (show)

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Description TCH 2019-01-16 14:00:11 CST 
I have an SB Audigy RX and there is some problem the way KMix handle its channels.

In ALSAMixer i can see the 'Master' channel for both input and output and also i can control them properly.

http://oscomp.hu/depot/alsamixer_master.png

But in KMix, only the input has it:

http://oscomp.hu/depot/kmix_input_master.png
http://oscomp.hu/depot/kmix_output_master.png

Thus, it's impossible to handle the Master channel from KMix.
And since the Kicker applet "Sound Mixer" uses KMix to handle channels, if i check 'Master' in the channel list, it shows the input, not the output, so i cannot control the Master volume from the tray.

Editing the RC files and disabling/removing capture, showing playback did not helped.
Comment 1 Michele Calgaro 2019-01-21 09:21:30 CST 
I may be wrong, but as far as I know kmix should display the same channels as alsamixer. Can you post separate screenshots of only the playback channels and output channels?
In my system, master channels are only shown on the output tab. Also please check the full name of the channel in alsamixer: for example on my system I have "master" and "master mono" and when selecting the second one, alsamixed shows the complete name at the top part of the window.
Comment 2 TCH 2019-01-21 10:42:26 CST 
Here is a picture of both playback and record channels in KMix:

http://oscomp.hu/depot/kmix_both.png

The full name of Master in ALSAMixer is "Master".

The command

amixer -q set 'Master' playback 1+

works, so it's "Master".
Comment 3 Michele Calgaro 2019-01-22 08:45:57 CST 
ok, thanks for the feedback.
Comment 4 TCH 2020-05-05 08:21:21 CDT 
Description of the error's nature and fixing patch is available in this gitea issue: http://mirror.git.trinitydesktop.org/gitea/TDE/tdemultimedia/issues/16
Comment 5 Michele Calgaro 2020-05-07 05:21:15 CDT 
Fixed by PR #18
https://mirror.git.trinitydesktop.org/gitea/TDE/tdemultimedia/pulls/18.

Thanks TCH for the work and support.