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>>> I just changed my RadeonHD 4670 for a 7870, and now when I type >>> "aplay -l" I get many HDMI codecs instead of just one like for the >>> previous card. >>> >>

How many hdmi , dvi or display port connectors do your card have ?

1 hdmi, 1 vga, 2 tiny ports that I cannot name.

are these mini display port ?

http://en.wikipedia.org/wiki/Mini_DisplayPort

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Specification seem support up to 6 displays

I believe these are virtual HDMI ouputs, not physical ones and total for 6 in aplay -l and for 4 in aplay -L.

are you using latest alsa-lib ?

http://git.alsa-project.org/?p=alsa-lib.git;a=commit;h=383912ef83cb2d5835239...

Good point, I'm on a 3.13-rc2 kernel but totally forgot about the lib

part. I have the 1.0.27.2 lib, let me get the git version.

Alright exactly the same behavior with -git.