Menno Tammens wrote:
> I'm trying to play 2-channel audio files on all the 6 channels my
> nforce-sound provides, with this asound.conf (found
> onhttp://alsa.opensrc.org/index.php?page=FAQ028):
>
> ------------------
>    pcm.ch51dup {
>       type route
>       slave.pcm surround51
>       slave.channels 6
>       ttable.0.0 1
>       ttable.1.1 1
>       ttable.0.2 1
>       ttable.1.3 1
>       ttable.0.4 0.5
>       ttable.1.4 0.5
>       ttable.0.5 0.5
>       ttable.1.5 0.5
>    }
> ------------------
>
> Aplay gives this error:
>
> ------------------
> [EMAIL PROTECTED] earendil $ aplay -Dplug:ch51dup /tmp/test.wav
> Playing WAVE '/tmp/test.wav' : Signed 16 bit Little Endian, Rate 44100
> Hz, Stereo
> aplay: set_params:882: Can't use period equal to buffer size (5017 ==
> 5017)
> ------------------

Try to set the period and buffer sizes explicitly:

    slave.period_size 3072
    slave.buffer_size 6144

(I don't know what values your hardware supports)


HTH
Clemens




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