[alsa-devel] Follow Up: "Why my linux OS has only 8 sound cards ? How can I modify it ?"

Clemens Ladisch clemens at ladisch.de
Tue May 8 15:02:33 CEST 2012

Maciej Paszta wrote:
> Quick reminder: I have  10 sound cards which need to have oss emulation
> enabled. However, I only see 8 devices (dsp-dsp7). Takashi suggested a
> patch to workaround this problem:
> http://mailman.alsa-project.org/pipermail/alsa-devel/2011-November/045764.html
> I've applied it to kernel 3.0.0 and the only result I get is message
> appearing in kernel logs: "unable to register OSS PCM device 8:0". I've
> done some debugging and the registration fails on these lines
> (sound/core/sound_oss.c):
> register1 = register_sound_special_device(f_ops, minor, carddev);

Try replacing 128 with 256 in register_sound_special_device() in


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