[chuck-users] Newbie - chuck segfaults...

[Mark Knecht]

I've been trying to get started with Chuck today but am having
problems. My platform is Gentoo 64-bit. I've tried compiling chuck
with both Alsa and Jack support and am having some trouble with each.
I have two cound cards in the system. The first is onboard and I
normally use for system sounds, browsers, etc. The second is the HDSP
which I normally use with Jack:

mark at lightning ~/Desktop $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: CK804 [NVidia CK804], device 0: Intel ICH [NVidia CK804]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: CK804 [NVidia CK804], device 2: Intel ICH - IEC958 [NVidia
CK804 - IEC958]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: DSP [Hammerfall DSP], device 0: RME Hammerfall HDSP 9652 [RME
Hammerfall HDSP 9652]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
mark at lightning ~/Desktop $

I can play audio through the first card using aplay, as I do here:

aplay /home/mark/Desktop/My\ Data/Music/Painting\ After\
Hours/AFTERHOURS\ EDM\ pahPROMO\ 01.wav

Using Alsa chuck seems to be unhappy with my first sound card. Same
results using 44.1K or 48K:

mark at lightning ~/Desktop $ chuck.alsa --srate44100 ChuckExample1.ck
[chuck]: (via rtaudio): no devices found for given stream parameters:
... RtApiAlsa: pcm device (hw:CK804,0) won't open: Device or resource busy.
... RtApiAlsa: pcm device (hw:CK804,1) won't open: No such file or directory.
... RtApiAlsa: error setting sample rate (44100) on device
(hw:CK804,2): Invalid argument.
... RtApiAlsa: pcm capture open (hw:DSP,0) error: Device or resource busy.

[chuck]: cannot initialize audio device (try using --silent/-s)
mark at lightning ~/Desktop $

I don't see how the device is busy in the sense that I have no problem
playing audio through it with aplay.


When I try to use chuck with the second card I see the segfault. Jack
is running at 44.1K:

mark at lightning ~/Desktop $ chuck.jack --srate44100 ChuckExample1.ck
Segmentation fault
mark at lightning ~/Desktop $ chuck.jack --srate44100 ChuckExample1.ck --verbose
[chuck]:(2:SYSTEM): setting log level to: 5 (INFORM)...
[chuck]:(2:SYSTEM): initializing virtual machine...
[chuck]:(2:SYSTEM):  | behavior: HALT
[chuck]:(2:SYSTEM):  | locking down special objects...
[chuck]:(2:SYSTEM):  | allocating shreduler...
[chuck]:(2:SYSTEM):  | allocating messaging buffers...
[chuck]:(2:SYSTEM):  | real-time audio: YES
[chuck]:(2:SYSTEM):  | mode: CALLBACK
[chuck]:(2:SYSTEM):  | sample rate: 44100
[chuck]:(2:SYSTEM):  | buffer size: 512
[chuck]:(2:SYSTEM):  | num buffers: 8
[chuck]:(2:SYSTEM):  | devices adc: 0 dac: 0 (default 0)
[chuck]:(2:SYSTEM):  | channels in: 2 out: 2
[chuck]:(2:SYSTEM): initializing compiler...
[chuck]:(3:SEVERE):  | initializing type checker...
[chuck]:(3:SEVERE):  |  | adding base classes...
[chuck]:(3:SEVERE):  |  |  | class 'object'
[chuck]:(3:SEVERE):  |  |  | class 'array'
[chuck]:(3:SEVERE):  |  |  | class 'string'
[chuck]:(3:SEVERE):  |  |  | class 'ugen'
[chuck]:(3:SEVERE):  |  |  | class 'uanablob'
[chuck]:(3:SEVERE):  |  |  | class 'uana'
[chuck]:(3:SEVERE):  |  |  | class 'shred'
[chuck]:(3:SEVERE):  |  |  | class 'event'
[chuck]:(3:SEVERE):  |  |  | class 'io'
[chuck]:(3:SEVERE):  |  |  | class 'class'
[chuck]:(3:SEVERE):  | initializing emitter...
[chuck]:(3:SEVERE):  | loading built-in modules...
[chuck]:(3:SEVERE):  |  | module osc...
[chuck]:(3:SEVERE):  |  | module xxx...
[chuck]:(3:SEVERE):  |  | module filter...
[chuck]:(3:SEVERE):  |  | module STK...
[chuck]:(3:SEVERE):  |  | module xform...
[chuck]:(3:SEVERE):  |  | module extract...
[chuck]:(3:SEVERE):  |  | class 'machine'...
[chuck]:(3:SEVERE):  |  | class 'std'...
[chuck]:(5:INFORM):  |  | initializing KBHitManager...
[chuck]:(5:INFORM):  |  | starting kb loop...
[chuck]:(3:SEVERE):  |  | class 'math'...
[chuck]:(3:SEVERE):  |  | class 'opsc'...
[chuck]:(2:SYSTEM): type dependency resolution: MANUAL
[chuck]:(2:SYSTEM): initializing synthesis engine...
[chuck]:(3:SEVERE):  | initializing 'dac'...
[chuck]:(3:SEVERE):  | initializing 'adc'...
[chuck]:(3:SEVERE):  | initializing 'blackhole'...
[chuck]:(2:SYSTEM):  | initializing 'real-time' audio...
[chuck]:(5:INFORM):  |  | initializing callback...
[chuck]:(3:SEVERE):  |  | new buffer size: 512 -> 256
[chuck]:(3:SEVERE):  | allocating buffers for 256 x 2 samples...
[chuck]:(3:SEVERE): starting compilation...
[chuck]:(2:SYSTEM): starting listener on port: 8888...
[chuck]:(2:SYSTEM): running virtual machine...
[chuck]:(3:SEVERE):  | initializing audio buffers...
[chuck]:(3:SEVERE):  | virtual machine running...
Segmentation fault
mark at lightning ~/Desktop $


I hope this is just me making some small mistake. Thanks in advance.

Cheers,
Mark