On 25.11.2010 14:21, John Ettedgui wrote: > On Thu, Nov 25, 2010 at 3:40 AM, Anssi Hannula <anssi.hannula@xxxxxx> wrote: >> On 25.11.2010 13:09, John Ettedgui wrote: >>> On Thu, Nov 25, 2010 at 2:49 AM, Anssi Hannula <anssi.hannula@xxxxxx> wrote: >>>> On 25.11.2010 06:12, John Ettedgui wrote: >>>>> I'm actually trying to get a 5.1 setup working without passthrough, if >>>>> I use mplayer with passthrough my receiver behaves just fine, but I am >>>>> trying to send the 6 channels from the computer. >>>>> >>>>> I was actually told that the current ALSA driver for radeon's hdmi >>>>> does not support more than 2 channels, and that would explain why I'm >>>>> getting this behavior. Is that true though? >>>> >>>> Yes. >>>> >>>> >>>> However, strangely your log output seems to show the intel's hdmi parser >>>> being used instead: >>>> >>>>> ALSA sound/pci/hda/patch_intelhdmi.c:842: hdmi_setup_stream: NID=0x2, >>>>> stream=0x1, new-format=0x11 >>>> >>>> Were you just trying some patch at the time? >>> >>> yes Wu gave me a patch to try against the kernel, I'm guessing this is >>> the reason you see something unexpected. >> >> Did 6 channels work with that patch? (possibly with a wrong channel order) > Not any better as far as I remember. OK. Did 2 channel audio continue to work with it? If you are not sure, here's the patch doing the same thing against current alsa driver: http://stuff.onse.fi/0001-ALSA-hda-Use-generic-HDMI-code-for-ATI-HDMI-codecs.patch Confirming that would help (it would allow to switch the ATI chip to use the generic parser instead of the ATI-specific one), though not with the multichannel issue (see below). [...] >>> Since I just moved to jack/rca cables I'm in no hurry anymore, but is >>> there any reason why the driver cannot work with more than 2 channels? >> >> I don't really know (it is simply not implemented). > Alright. >> >>> Anything I could do to help with that? >> >> Possibly. But see above, so that we won't try the same things you >> already tried :) >> > Sure :) Looking again at the the alsa info output you provided, I don't think I have any great ideas. It looks like the chip simply reports that it supports a maximum of 2 channels. One option could be hardcoding "chans = 8;" in generic_hdmi_build_pcms() in sound/pci/hda/patch_hdmi.c (assuming you have the above patch and 2 channel audio works with it). However, I find it rather unlikely that it would make any difference. -- Anssi Hannula _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
