Open Sound System

ossrecord -d/dev/dsp assdf.wav
/dev/dsp: Permission denied

Why does it happen? Ossplay works perfectly well, and I can hear sound both in it and in applications. Thanks in advance.

Kingpin wrote:ossrecord -d/dev/dsp assdf.wav
/dev/dsp: Permission denied

Why does it happen? Ossplay works perfectly well, and I can hear sound both in it and in applications. Thanks in advance.

You may post your "ossinfo" and other info about your system





etc.

I have the same problem now





All of this with root.

waterlaz wrote:

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$ ossrecord -i?                                                                                                     
/dev/dsp: Permission denied

All of this with root.

"$" does not mean "root".
The root terminal is usually "#"

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/dev/dsp: Permission denied

This error will occur, if the user does not have permission to use the audio device:

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Error: /dev/dsp: Permission denied

The user is required to be a member of the audio group to use the audio device.
_https://wiki.debian.org/SoundFAQ

This has been done in root. I've just replaced the prompt with $ myself. But ok...

waterlaz wrote:This has been done in root. I've just replaced the prompt with $ myself. But ok...

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pidgin tmp # whoami
root

pidgin tmp # ossrecord -i?
/dev/dsp: Permission denied

pidgin tmp # ossrecord -d/dev/dsp assdf.wav
/dev/dsp: Permission denied


Does your "root" have rw access to it?

Post here the output of these commands:





You may also try this:



See: _https://en.wikipedia.org/wiki/Open_Sound_System#API

Does your "root" have rw access to it?

You don't need to put parentheses =) It is root and it has read and write access. I'll post the details later.

igorzwx wrote:You may also try this:

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$ cat /dev/random > /dev/dsp # plays white noise through the speaker
$ cat /dev/dsp > /dev/dsp # reads data from the microphone and plays them through the speaker

See: _https://en.wikipedia.org/wiki/Open_Sound_System#API

This was the first thing that I've tried. The first one works as expected, the second one complains about permissions.


PS a simple C program to access /dev/dsp fails on opening the file with "RW" access (I just had this code from my home projects, so tried to run it).

Try something like this ("hdaudio_noskip=7"):
_http://ossnext.trueinstruments.com/forum/viewtopic.php?f=16&t=4446&p=17828#p17828


The same problem with the same HDA codec AD1984
_http://ossnext.trueinstruments.com/forum/viewtopic.php?f=3&t=3887

PROBLEM: "OSS doesn't identify any input device at all on your hdaudio"

Such "input devices" can be found in the output of "ossinfo -v9" command.
For example:



Nodes "/dev/dsp_in" and "/dev/dsp_out" (in ossinfo) should look like this:



So that, you may try this:
1. Set "hdaudio_noskip=7" in /usr/lib/oss/conf/oss_hdaudio.conf and reload OSS4.

2. Compare "ossinfo -v9" before and after "hdaudio_noskip=7".

Well.. now I don't have the permission denied error, but the mic still doesn't work, even though I've tried all the possible settings in the mixer.

waterlaz wrote:Well.. now I don't have the permission denied error, but the mic still doesn't work, even though I've tried all the possible settings in the mixer.

Post here the output of this command: