Bug 132172

Summary:	Switch IEC958 does not mute/unmute
Product:	[Applications] kmix	Reporter:	sinderman+kde
Component:	general	Assignee:	Christian Esken <esken>
Status:	RESOLVED DUPLICATE
Severity:	major
Priority:	NOR
Version:	2.6
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	cat /proc/asound/cards ; amixer

Description sinderman+kde 2006-08-10 00:55:45 UTC

Version:           2.6 (using KDE 3.5.4 Level "a" , unofficial build of SUSE )
Compiler:          Target: x86_64-suse-linux
OS:                Linux (x86_64) release 2.6.16.21-0.13-default

NVidia CK804 (on board chip)

Things that I can achieve with:
 amixer set IEC958 unmute
 amixer set IEC958 mute
are not doable with KMix (the control is there but it does not work)

I can turn the radio box at the switch tab for IEC958 On and Off, but it does not communicate with ALSA.

On the other hand, with the Gnome ALSA mixer, clicking on the IEC958 radio box mutes and unmutes the sound. 

I am using digital output and the "IEC958 Playback Source" pull down menu is set to PCM.

Once it works, it might be helfull to rename (or add to name) SPDIF/AC3/DigitalOut to the IEC958 string that is not very descriptive.

Thanks and waiting 4 kde 4.

Comment 1 Christian Esken 2006-09-26 16:19:08 UTC

Please send the output from the following two commands:

  cat /proc/asound/cards
  amixer


PS: IEC958 switch works fine on various other boxes. There must be something special with that chipset.

Comment 2 sinderman+kde 2006-09-27 16:57:41 UTC

Created attachment 17937 [details]
cat /proc/asound/cards ; amixer

This is quiet annoying. Everytime the computer is rebooted I need to enter the
console and unmute manually ( amixer set IEC958 unmute ) and then go to
kmix>Mixer>AC97 and lower the slidbar to the minimum. With 0 works, with 1, 2
or 3  not. Maybe is the normal behaviour, but the setting is lost and every
time I log in, it resets back intself to 3.

Other alsamixer front ends do not have this problem:
Gnome ALSA mixer, gmerlin_alsamixer, etc.

Comment 3 Christian Esken 2006-09-28 16:53:25 UTC

OK, I see from the submitted data that this chipset has a capture switch and a playback switch. KMix does not support this yet (and it is a bug).

Comment 4 Christian Esken 2007-06-16 20:49:57 UTC

More precisley, the 'IEC958' looks like this:

Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined cswitch cswitch-joined

I now see that this is exactly the second issue in bug 126012. So I'll mark this as DUP.

Target milestone: KDE4

*** This bug has been marked as a duplicate of 126012 ***