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[Csnd] csound doesn't find the right output port

Date2013-08-08 20:04
FromStefan Thomas
Subject[Csnd] csound doesn't find the right output port
Dear community,
it happens sometimes (but, strange enough, only sometimes) that csound won't find the sound card I want the program to use.
I use the flags
 -+rtaudio=alsa -+rtmidi=alsa -Ma -m0d -b 512 -B 1024  -odac:hw:Intel
in my csd-file.
But I get the message (when running from command line):
Cannot open device 'hw:Intel' for audio output: Device or resource busy
Failed to initialise real time audio output
The output of cat /proc/asound/cards is
0 [Intel          ]: HDA-Intel - HDA Intel                                                        
                      HDA Intel at 0xea200000 irq 55                                               
 1 [NVidia         ]: HDA-Intel - HDA NVidia                                                       
                      HDA NVidia at 0xe3080000 irq 17                                              
 2 [U88es          ]: USB-Audio - USB Keystation 88es                                              
                      M-Audio USB Keystation 88es at usb-0000:05:00.0-1.1, full speed              
The file works when I use only -odac (without :hw:Intel), but I get the error message
ALSA: -b 512 not allowed on this device; using 341 instead
Does someone know, why these things happen?