Broken ALSA surround sound with OpenALSoft 1.12 and newer

Hi,

I've discovered a problem with OpenALSoft 1.12 and newer on my Ubuntu Linux 
11.04 Natty. If I configure OpenAL to use the ALSA device surround51 [1] and 
run my sample application [2] I get the following error:

Using device: ALSA Software
AL lib: alsa.c:743: set buffer time near failed: Invalid argument
Error: Could not create the audio context!
Error: Audio format not supported (more the 2 channels)
AL lib: ALc.c:1879: exit(): closing 1 Device


Everything is fine with OpenALSoft 1.11 and older.


Has anyone an idea, what to do?


Greetz,
Martin


[1] www.fh-wedel.de/~eg/files/alsoft.conf
[2] www.fh-wedel.de/~eg/files/main.cpp

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