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ALSA - no sound, master channel un-setable in alsamixer
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cosmicnut
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Posts: 94

PostPosted: Mon Apr 04, 2005 10:06 pm    Post subject: ALSA - no sound, master channel un-setable in alsamixer Reply with quote

As it says in the title,
I have got alsa running and everything looks OK. The graphical mixer in Gnome sets and remembers values.
However, I have no sound.
Not wanting to trust the Gnome mixer, I have tried using alsamixer as well.
Under alsamixer, the master channel can be muted and un-muted but has no "green box" and does not respond to up/down actions.
It lists the correct drivers for the on-board sound. lsmod has the alsa drivers loaded, dmesg has no errors.

I've just got my PVR350 and MythTv working (pc screen only atm), I just can't get any sound!!!!!
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diastelo
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PostPosted: Tue Apr 05, 2005 1:25 pm    Post subject: Reply with quote

What's the output of amixer? You should let us know what card you have as well, and tell us what channels are available. Sometimes other channels can interfere with Master and cause problems.
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Jicksta
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PostPosted: Tue Apr 05, 2005 9:31 pm    Post subject: Reply with quote

I'm actually having this same problem. I followed the Gentoo Linux Documentation ALSA Guide and it seems to runs well-- the sound engine loads, no errors when booting KDE, XMMS doesn't blow up, but the thing is... it doesn't WORK.

For illustrative purposes, here is a screenshot of alsamixer with my/our problem. Yes, due to Xorg/Radeon problems, my resolution is really that small right now. :)

For those potentially reading this many months from now: I'll try to keep this link alive, but if it dies, my apologies. :)

Here is my output of amixer:

Quote:
Simple mixer control 'Master',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'PCM',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Surround',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Center',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 31
Mono: Playback 31 [100%] [on]
Simple mixer control 'LFE',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 31
Mono: Playback 0 [0%] [on]
Simple mixer control 'Line',0
Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 0 [0%] [off] Capture [off]
Front Right: Playback 0 [0%] [off] Capture [off]
Simple mixer control 'Line-In As Surround',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'CD',0
Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 0 [0%] [off] Capture [off]
Front Right: Playback 0 [0%] [off] Capture [off]
Simple mixer control 'Mic',0
Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 0 [0%] [off] Capture [off]
Front Right: Playback 0 [0%] [off] Capture [off]
Simple mixer control 'Mic As Center/LFE',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Mic Boost (+20dB)',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Mic Select',0
Capabilities:
Mono:
Simple mixer control 'Video',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'Phone',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined cswitch cswitch-joined
Playback channels: Mono
Capture channels: Mono
Mono: Playback [on] Capture [off]
Simple mixer control 'IEC958 Capture Monitor',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'IEC958 Capture Valid',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'IEC958 Output',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'IEC958 Playback AC97-SPSA',0
Capabilities: volume volume-joined
Playback channels: Mono
Limits: 0 - 3
Mono: 3 [100%]
Simple mixer control 'IEC958 Playback Source',0
Capabilities:
Mono:
Simple mixer control 'PC Speaker',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 15
Mono: Playback 0 [0%] [on]
Simple mixer control 'Aux',0
Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 0 [0%] [off] Capture [off]
Front Right: Playback 0 [0%] [off] Capture [off]
Simple mixer control 'Mono Output Select',0
Capabilities:
Mono:
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch cswitch-joined
Capture channels: Front Left - Front Right
Limits: Capture 0 - 15
Front Left: Capture 0 [0%] [on]
Front Right: Capture 0 [0%] [on]
Simple mixer control 'Mix',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'Mix Mono',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Front Left: Capture [on]
Front Right: Capture [on]
Simple mixer control 'External Amplifier',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Input Source Select',0
Capabilities:
Mono:
Simple mixer control 'Input Source Select',1
Capabilities:
Mono:
Simple mixer control 'VIA DXS',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 31 [100%]
Front Right: Playback 31 [100%]
Simple mixer control 'VIA DXS',1
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 31 [100%]
Front Right: Playback 31 [100%]
Simple mixer control 'VIA DXS',2
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 31 [100%]
Front Right: Playback 31 [100%]
Simple mixer control 'VIA DXS',3
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 31 [100%]
Front Right: Playback 31 [100%]


Any help at all would be greatly appreciated.

Thanks,

Jick
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cosmicnut
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PostPosted: Wed Apr 06, 2005 9:27 am    Post subject: Reply with quote

I'll put the exact values in later. Having a lot of work done on the flat and can't get to the PC atm!

However it's the same sort of thing as Jicksta, a via chipset on-board sound
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diastelo
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PostPosted: Wed Apr 06, 2005 12:56 pm    Post subject: Reply with quote

Do me a favor and mute the IEC958 capture monitor. If that doesn't work, try muting other channels.
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cosmicnut
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PostPosted: Wed Apr 06, 2005 9:14 pm    Post subject: Reply with quote

I've pulled some info together,

Here's the amixer result, I've linked to it, to save space

Here's a screenie of the alsamixer screen

I've tried muting ALL channels except master and slowly turning others on, still no luck. :(
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diastelo
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PostPosted: Thu Apr 07, 2005 1:30 am    Post subject: Reply with quote

I mentioned the capture monitor in particular because it was a stumbling block to others with the same chipset as both of you. I haven't been able to find any documented cases that perfectly match what you've shared, but others have complained about missing channels to set. Several of them mentioned that they were able to get sound almost immediately after disabling the monitor.

Alsa is still on the edge in some ways, and I would not be surprised if this turned out to be a bug that was introduced in a recent version of their drivers. I myself have to use the headphone channel on my computer at work, thanks to the fact that the card automatically detects headphones without any warning. Took me a good while to figure that one out.

I still wonder if something is capturing when it shouldn't. Have you tried disabling capturing on everything, if possible? I see that the mic is still set on both of your computers.
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Jicksta
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PostPosted: Thu Apr 07, 2005 1:53 am    Post subject: Reply with quote

Good... holy... god...

Diastelo, you receive my eternal gratitude.

Muting the IEC958 channel WORKED! Sound! Joy!

Alsamixer still fumbles over the main audio channels, but hell, how I could I be complaining right now?

I'll name my first-born after you. It's the least I can do... :)

Cosmicnut, I suggest you try this as well... it's very likely your problem is simply this too.

Again, many thanks, Diastelo. Problem SOLVED.


Jick
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curious_bob
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PostPosted: Thu Apr 07, 2005 4:05 am    Post subject: Reply with quote

I have the same problem. I am using Intel x80.

amixer wrote:
Simple mixer control 'Master',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Master Mono',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 31
Mono: Playback 31 [100%] [off]
Simple mixer control 'PCM',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Surround',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 0 [0%] [off]
Front Right: Playback 0 [0%] [off]
Simple mixer control 'Center',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 31
Mono: Playback 31 [100%] [off]
Simple mixer control 'LFE',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 31
Mono: Playback 0 [0%] [off]
Simple mixer control 'Line',0
Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 27 [87%] [on] Capture [off]
Front Right: Playback 27 [87%] [on] Capture [off]
Simple mixer control 'Line-In As Surround',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'CD',0
Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 0 [0%] [off] Capture [off]
Front Right: Playback 0 [0%] [off] Capture [off]
Simple mixer control 'Mic',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Playback channels: Mono
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono: Playback 0 [0%] [off]
Front Left: Capture [on]
Front Right: Capture [on]
Simple mixer control 'Mic As Center/LFE',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Mic Boost (+20dB)',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Mic Select',0
Capabilities:
Mono:
Simple mixer control 'Video',0
Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 0 [0%] [off] Capture [off]
Front Right: Playback 0 [0%] [off] Capture [off]
Simple mixer control 'Phone',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Playback channels: Mono
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono: Playback 0 [0%] [off]
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined cswitch cswitch-joined
Playback channels: Mono
Capture channels: Mono
Mono: Playback [off] Capture [off]
Simple mixer control 'IEC958 Capture Monitor',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'IEC958 Capture Valid',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'IEC958 Playback AC97-SPSA',0
Capabilities: volume volume-joined
Playback channels: Mono
Limits: 0 - 3
Mono: 3 [100%]
Simple mixer control 'IEC958 Playback Source',0
Capabilities:
Mono:
Simple mixer control 'PC Speaker',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 15
Mono: Playback 0 [0%] [off]
Simple mixer control 'Aux',0
Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 0 [0%] [off] Capture [off]
Front Right: Playback 0 [0%] [off] Capture [off]
Simple mixer control 'Mono Output Select',0
Capabilities:
Mono:
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch cswitch-joined
Capture channels: Front Left - Front Right
Limits: Capture 0 - 15
Front Left: Capture 0 [0%] [on]
Front Right: Capture 0 [0%] [on]
Simple mixer control 'Mix',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'Mix Mono',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'External Amplifier',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]


please help.
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Tambor
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PostPosted: Thu Apr 07, 2005 10:38 am    Post subject: Reply with quote

I can resolv this doubt. You can try to mute the headphone Jack Sense and then all the sound in your computer will function.
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PostPosted: Thu Apr 07, 2005 3:01 pm    Post subject: Reply with quote

My sound was fixed thanks to this topic
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Crisis
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PostPosted: Sun Apr 17, 2005 11:37 pm    Post subject: Reply with quote

I'm having this exact same problem and cannot get it fixed.

It always used to work, but I had to doa clean install from 2005.0, and I have a feeling udev is causing some sort of problem since I have had a lot of problems with udev.

I have tried muting every channel pretty much but I still have no master control. I have also messed with the permissions per another thread, but that didn't help. I can't even play sound as root. Anyone have any other ideas?
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