[alsa-devel] Recording support for Roland SD-50 USB Audio device
Hi.
I'm unable to record using the Roland SD-50 on Linux.
My alsa configuration is available at the following address:
http://www.alsa-project.org/db/?f=19aeffd0d30e952fdd12d589929fbe2a0f98ad7f
There is something odd with playback as well. With the sound control panel ( unity-control-center ). The test output only works when the SD-50 input is selected from the input tab.
So, I'm pretty sure there is simply some mix up in the mixer configuration... and I'd like to contribute making it work. ( I have some programming stills :-) )
Although Alsa with Jack and Ardour makes a pretty decent and promising environment for audio production on Linux. It's hard to believe that device support is still an issue after more than 20 years of Linux, darn manufacturers !
On another note, if anyone has a good recommendation for USB Midi+Audio + Sound Module to replace this SD-50 on Linux , I'd be willing to hear about it... I want the sound module to be able to use it when not connected to a computer. I want USB because I don't want to take it off with the laptop as well. I really though the SD-50 would make my day...
Thank you. François
Le 04/06/2014 08:30, Daniel Mack a écrit :
What exactly is the problem and how did you test?
I tried the "input" view meeter in pavucontrol first.
And this is what I get when trying the record from the command line:
isabellf@brahms:~/alsa-driver$ LC_ALL=C arecord -Dplughw:3 file.wav arecord: main:722: audio open error: Device or resource busy
I also checked the alasmixer capture parameters it says: This sound device does not have any capture controls.
François
On 06/04/2014 03:10 PM, François Isabelle wrote:
Le 04/06/2014 08:30, Daniel Mack a écrit :
What exactly is the problem and how did you test?
I tried the "input" view meeter in pavucontrol first.
And this is what I get when trying the record from the command line:
isabellf@brahms:~/alsa-driver$ LC_ALL=C arecord -Dplughw:3 file.wav arecord: main:722: audio open error: Device or resource busy
Then some other application has control over the device, most probably pulseaudio or JACK. Check if prepending arecord with "pasuspender --" helps.
I also checked the alasmixer capture parameters it says: This sound device does not have any capture controls.
That can well be. alsamixer only lists controls that are exposed by the hardware, and there might well be none.
Daniel
Le 04/06/2014 09:26, Daniel Mack a écrit :
Then some other application has control over the device, most probably pulseaudio or JACK. Check if prepending arecord with "pasuspender --" helps.
You were right, but now the read seems to block..
isabellf@brahms:~/alsa-driver$ LC_ALL=C pasuspender -- arecord -Dplughw:3 file.wav Recording WAVE 'file.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono ^CAborted by signal Interrupt... arecord: pcm_read:2031: Got SIGINT, exiting. read error: Interrupted system call
And the resulting file has no data.
isabellf@brahms:~/alsa-driver$ hexdump file.wav -C 00000000 52 49 46 46 24 00 00 80 57 41 56 45 66 6d 74 20 |RIFF$...WAVEfmt | 00000010 10 00 00 00 01 00 01 00 40 1f 00 00 40 1f 00 00 |........@...@...| 00000020 01 00 08 00 64 61 74 61 00 00 00 80 |....data....| 0000002c isabellf@brahms:~/alsa-driver$ ^C
François.
François Isabelle wrote:
My alsa configuration is available at the following address:
http://www.alsa-project.org/db/?f=19aeffd0d30e952fdd12d589929fbe2a0f98ad7f
OK, the kernel is new enough.
I'm unable to record using the Roland SD-50 on Linux.
And when you're playing something at the same time?
There is something odd with playback as well. With the sound control panel ( unity-control-center ). The test output only works when the SD-50 input is selected from the input tab.
So it works only if both playback+capture are used?
So, I'm pretty sure there is simply some mix up in the mixer configuration...
If so, the configuration cannot be accessed from the computer. Check the device settings. (Do the current settings work with Windows?)
Regards, Clemens
Le 04/06/2014 15:28, Clemens Ladisch a écrit :
François Isabelle wrote:
My alsa configuration is available at the following address:
http://www.alsa-project.org/db/?f=19aeffd0d30e952fdd12d589929fbe2a0f98ad7f
OK, the kernel is new enough.
yes, I'm on Ubuntu 14.04
I'm unable to record using the Roland SD-50 on Linux.
And when you're playing something at the same time?
I didn't try that so I just did: no success.
I noticed a bunch of these in the kernel logs, wondering if they could have an effect ...
74593.911782] retire_playback_urb: 827 callbacks suppressed [74682.797798] retire_playback_urb: 827 callbacks suppressed [74687.812561] retire_playback_urb: 831 callbacks suppressed [74692.827336] retire_playback_urb: 832 callbacks suppressed [74697.842108] retire_playback_urb: 832 callbacks suppressed [74702.856874] retire_playback_urb: 832 callbacks suppressed
There is something odd with playback as well. With the sound control panel ( unity-control-center ). The test output only works when the SD-50 input is selected from the input tab.
So it works only if both playback+capture are used?
That's not what I meant. I mean that the SD-50 output using pulseaudio only seems to work when the pulse audio default input is set to the SD-50 as well. I think I should probably get pulseaudio out of the mix for now, and focus on the core alsa support. Is this SD-50 card known to work ?
So, I'm pretty sure there is simply some mix up in the mixer configuration...
If so, the configuration cannot be accessed from the computer. Check the device settings. (Do the current settings work with Windows?)
There is very little configuration parameters on the device itself, except input selection for mic/guitar and power selection between bus and power cord. It was working with windows last time I checked and I didn't change it.
Right now, I'm not getting any output when using: pasuspender -- speaker-test -Dplughw:3
But if I deselect and reselect the input device in the audio control panel or select the S/PDIF ouput instead (which the unit does not have) the sound panel built-in sound check starts working again..
This is a big snafu state.
Looking forward for some troubleshooting ... Thanks. François.
Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
François Isabelle wrote:
[74593.911782] retire_playback_urb: 827 callbacks suppressed [74682.797798] retire_playback_urb: 827 callbacks suppressed [74687.812561] retire_playback_urb: 831 callbacks suppressed [74692.827336] retire_playback_urb: 832 callbacks suppressed [74697.842108] retire_playback_urb: 832 callbacks suppressed [74702.856874] retire_playback_urb: 832 callbacks suppressed
This is because of some error message that was repeated too often. That comes before these "callbacks suppressed"?
Regards, Clemens
This is because of some error message that was repeated too often. That comes before these "callbacks suppressed"?
Only the detection of the device. But you know what ?! I found at that the device no longer records on Windows either and I think the input might be broken (barely audible white noise at maximum gain) , I'll have it checked by a tech.
Thank you François
participants (3)
-
Clemens Ladisch -
Daniel Mack -
François Isabelle