[alsa-devel] [Alsa-user] Crash 2.6.32.x, Echo 3G, Alsa, SCSI
pochini at shiny.it
Fri Jun 18 13:55:09 CEST 2010
On Thu, 17 Jun 2010 08:11:06 -0400
"F. Heitkamp" <heitkamp at ameritech.net> wrote:
> >> 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 18.104.22.168-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 ?
More information about the Alsa-devel