[alsa-devel] HDMI LPCM (7.1) with AMD/FGLRX
tiwai at suse.de
Tue Aug 9 12:35:31 CEST 2011
At Tue, 9 Aug 2011 12:31:03 +0200,
Andrée 'Glaucous' wrote:
> I run
> speaker-test -D hw:1,3 -c 8
> Now it actually worked a bit. The speaker-test runs as it should, but
> everytime it tries output to "none-two-channel" channel (LFE, Rear Left,
> Rear Right.. etc),
> it doesn't output anything. And I can see on the receiver that the (2
> channel PCM stream, but should say 7.1 Multichannel) is lost every time
> except for Front Left/Right channel.
Then some information is missing. ATI seems to have implemented LPCM
in a vendor-specific way.
> On 9 August 2011 12:05, Takashi Iwai <tiwai at suse.de> wrote:
> > At Tue, 9 Aug 2011 11:37:37 +0200,
> > Andrée 'Glaucous' wrote:
> > >
> > > Current kernel message (using alsa-kernel, I'll clone and build your git
> > > soon, got some internet problems at the moment):
> > > [ 147.334343] XXX HDMI pin_sense = 0x7fffffff
> > > [ 147.565059] XXX HDMI pin_sense = 0x7fffffff
> > > [ 153.248894] XXX HDMI pin_sense = 0xffffffff
> > > [ 153.250443] XXX HDMI pin_sense = 0xffffffff
> > > [ 189.475073] XXX HDMI pin_sense = 0x7fffffff
> > > [ 189.698017] XXX HDMI pin_sense = 0x7fffffff
> > > [ 196.664565] XXX HDMI pin_sense = 0xffffffff
> > > [ 196.666079] XXX HDMI pin_sense = 0xffffffff
> > >
> > > It recognizes when I take the cable in and out, or toggles display output
> > > (0xffffffff when connected).
> > OK, it's good to know. It means that the pin-sense reports only the
> > pin-detection but nothing else unlike other codecs. So, it's
> > basically bad to use generic HDMI parser for this codec.
> > And, when you wrote "I still can't run speaker-test with more than 2
> > channels", do you mean that you got an error? How did you run?
> > With the patch, the driver should take up to 8 channels. If not,
> > something was wrong -- either the patch wrongly applied or the patch
> > wasn't enough.
> > Takashi
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