[pulseaudio-discuss] set-card-profile not working for usb sound card

[Buddy Butterfly]

Hi,

I am trying to set a card profile in /etc/pulse/default.pa
(ubuntu trusty) with the followin line:

set-card-profile 0 output:analog-mono+input:analog-mono

Error message in syslog is:

Failed to set card profile to 'output:analog-mono+input:analog-mono'.
Failed to initialize daemon.
Daemon startup failed.

Though, pulse is running and the profile has been set with pavucontrol.
So it comes up with the correct profile.

If using the name instead of the index, the error message is that the
name can not be found.

Listing the cards gives indeed that this card is card 0.

What is wrong?