No input signal

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nssn
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Joined: Thu May 12, 2011 12:53 pm
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No input signal

Post by nssn » Thu May 12, 2011 1:18 pm

Hi all,

My first attempt at recording in Linux almost makes me by a Mac out of pure frustration.
But I'm skint, so I can't. I'm stuck with this configuration for now...

I'm not quite sure what I am doing wrong.
I got my mixer connected to the input of my ESI Maya44 pci soundcard (1st input, mono). I select this input in Audacity and turn monitoring on but the meters arn't showing any signal coming in. I tried the 2nd input as wel, but to no avail.

I did check the mixer by connecting the output to an amp and it works.

I'm quite sure that I'm overlooking something.

Please help.

bgravato
Posts: 2098
Joined: Wed Jan 13, 2010 8:56 pm
Operating System: Linux Debian

Re: No input signal

Post by bgravato » Thu May 12, 2011 3:01 pm

Which linux distribution are you using? And which Audacity version? (Help menu -> About...)

Are you using pulseaudio or any other sound system? Or accessing alsa drivers directly?
In Audacity's Preferences -> Devices, what have you selected for Host and Recording device? Which options do you have available?

Make sure you connect the cable to a line input.

You might need to select the recording device or recording volume in your system's sound control panel. Can't say much more than this without knowing more about your system...
Include as much details as you can in your post (Audacity version, Operating System, Equipment used, etc).
Please post your question in the appropriate forum (regarding audacity version and operating system).

nssn
Posts: 3
Joined: Thu May 12, 2011 12:53 pm
Operating System: Please select

Re: No input signal

Post by nssn » Thu May 12, 2011 8:40 pm

Hi Bgravato, thanks for your response.

I'm using Fedora 14 / Audacity version 1.3.12-beta (Unicode)
I am not entirely sure but I think I'm accessing alsa directly (at least I didn't install a seperate sound system)

I turned on the onboard soundcard in my PC's bios, and connected my mixer to it's input. That is working fine (settings for both Input and output: alsa default)
There are 2 input options available in in the dropdown menu for the Maya: "ALSA ESI Maya44: ICE 1724 (hw: 1,0)" and "ALSA ESI Maya44: ICE 1724 Secondary (hw: 1,1)"
But as soon as I try to use the input of the Maya44 nothing is coming trough. No matter what source I choose as input.

Both soundcards (the Maya and HP's internal one) are listed in the sound preferences screen. As soon as I unmute the HP I see the input level meter moving. The Maya does nothing though.

I can play back audio using the Maya perfectly. This is working ever since I installed Fedora.

bgravato
Posts: 2098
Joined: Wed Jan 13, 2010 8:56 pm
Operating System: Linux Debian

Re: No input signal

Post by bgravato » Fri May 13, 2011 9:59 am

Try running this from the command line:

Code: Select all

alsamixer -c 1
This should run alsamixer on the maya card.

Press F4 to switch to capture mode.

You should see at least 2 sliders for the analog inputs. See if any of them is muted or as the volume down. If so raise it.
Use the left-right arrow buttons to select the desired slider. Press spacebar to select that input as the default recording device.
I think M key is the one to toggle mute/unmute.

I've never seen a Maya card. Maybe its linux support is limited...
Include as much details as you can in your post (Audacity version, Operating System, Equipment used, etc).
Please post your question in the appropriate forum (regarding audacity version and operating system).

nssn
Posts: 3
Joined: Thu May 12, 2011 12:53 pm
Operating System: Please select

Re: No input signal

Post by nssn » Fri May 13, 2011 11:45 am

bgravato wrote: You should see at least 2 sliders for the analog inputs. See if any of them is muted or as the volume down. If so raise it.
Use the left-right arrow buttons to select the desired slider. Press spacebar to select that input as the default recording device.
I think M key is the one to toggle mute/unmute.
Both inputs where indeed turned fully down. I turned up the input volume and it works now.

Thanks!

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