Anssi Hannula <anssi.hannula@xxxxxx> writes: > This is a known issue, the NVIDIA MCP79/7A HDMI hardware has incorrect > channel mapping. > > I reported this several months ago as "Wrong channel order with > multichannel HDMI on MCP7A": > http://www.spinics.net/lists/alsa-devel/msg35948.html > (there are some earlier reports from 2009 as well) Great, thanks for confirming it's not just me. > I'm using this workaround at the moment: > pcm.!hdmi { > type route > slave.pcm "cards.HDA-Intel.pcm.hdmi.0:CARD=NVidia,AES0=0x4,AES1=0x82,AES2=0x0,AES3=0x2" > ttable.0.0 1 > ttable.1.1 1 > ttable.2.4 1 > ttable.3.5 1 > ttable.4.2 1 > ttable.5.3 1 > ttable.6.6 1 > ttable.7.7 1 > } I can confirm that this fixes things for me. > (not a perfect workaround as I'm hardcoding AESx instead of using the > ones provided as arguments, but at least you get the idea) I don't understand this comment, but hopefully if I just put the above in my asound.conf, all should be fine, right? > As for the preferred solution to this problem, as far as I understand, > that would be for the driver to have some ioctl that would provide > alsa-lib information about the unusual channel mapping, and alsa-lib > could then remap the channels using a channel remapping plugin. Alternatively, can the fix just be hardcoded for this audio card? Dan _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
