[alsa-devel] HDMI with more than 2ch ?
david.henningsson at canonical.com
Tue Jan 25 02:17:50 CET 2011
On 2011-01-24 10:16, Xavier Bestel wrote:
> I'm using HDMI output on an HD 2600, using KMS from kernel 2.6.37:
> The problem is that only 2ch are supported (not 1, not 3 or more). I
> tested with speaker-test, it only works with -c 2.
> So how can I access the other PCM channels ? There are 8 of them
> available in the HDMI standard, I thought the card should be able to
> drive all of them.
According to your HDMI codec it only supports stereo output, not
8-channel PCM. This is a limitation in your hardware, not in the HDMI
That is, if you want more channels, you probably want to ac3-encode the
David Henningsson, Canonical Ltd.
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