[pulseaudio-discuss] PULSEAUDIO and ALSA cooperation problem - Failed to find a working profile

Alexander E. Patrakov patrakov at gmail.com
Mon Feb 16 09:41:00 PST 2015

16.02.2015 20:10, Przemek Gajos wrote:
> przemek-12 pulseaudio[1991]: [pulseaudio] module-alsa-card.c: Failed to
> find a working profile.

This message indicates that PulseAudio could not find out an ALSA device 
that opens and provides the correct channel map without the plug layer. 
You can look into 
/usr/share/pulseaudio/alsa-mixer/profile-sets/default.conf to see which 
device strings are tried with which channel map.

Also please note that there was an important improvement in PulseAudio 
6.0 regarding devices that can only be opened with the "hw:X" device and 
with more than two channels. Previously, they would produce an error 
message that is the same as yours. So maybe it is a good idea to try the 
latest version?

If that doesn't help, then we need more information about the hardware. 
Is it a stereo or multichannel card? Is it a USB audio card? If it can 
do 5.1 audio, what does the following command produce?

aplay -vv -f dat -d 1 -D surround51:9 /dev/zero

Alexander E. Patrakov

More information about the pulseaudio-discuss mailing list