On Thu, 17 Jun 2010 08:11:06 -0400 "F. Heitkamp" heitkamp@ameritech.net wrote:

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My goal is to be able to plug in a MIDI keyboard, or USB guitar interface and play along with songs etc.

I plugged in a MIDI keyboard, "/proc/asound/cards" showed the keyboard was recognized. The keyboard has a USB and MIDI interface. I am not sure if they both work at the same time. I had the MIDI cable plugged into the Gina3G, but I could not tell if the keyboard was recognized. I compiled csound5. When I engaged it the system immediately froze and started spitting out: [...]

Ok, I compiled csound, but I don't know how to use it. How can I reproduce the problem ?

Sorry I took so long to get back to you. It turns out Csound is not related to the problem.

In this case I am only using kernel 2.6.33.5-rt23-amd64, alsa lib 1.0.2, but 2.6.34 does it too. I bring up firefox. Web pages attempt to play sound. The kernel begans doing:

[ 2879.766331] allocate_pipes: ch=1 int=2 [ 2879.766332] allocate_pipes: channel already open [ 2879.766333] allocate_pipes(1) err=-11 [ 2879.766334] pcm_hw_freed [ 2.821190] pcm_analog_out_open cs=0 oc=2 r=44100 [ 2879.821266] allocate_pipes: ch=1 int=2 [ 2879.821267] allocate_pipes: channel already open

,infinitely. The system is unusable at this point and I have to Alt-SysRq-k to get back in.

Let me know what other information to provide.

Perhaps is it related with the OSS emulation ? Do you know if the browser plays the sound itself or if it is using an external program or plugin ?