I am trying to run my Pure Data patch on a Raspberry Pi without a screen.
It runs fine when I attach a display and launch it from the command line.
However if I use the -nogui command line argument, the patch reports:
ALSA input error (snd_pcm_open): Device or resource busy
And I am unable to run it normally without a screen plugged as it reports this error:
Application initialization failed: no display name and no $DISPLAY environment variable
Why does adding -nogui stop the program running? Otherwise what's the best workaround?
Thanks in advance, Slidon