On Sat, 23 Nov 2013 03:29:28 +0200 Anssi Hannula anssi.hannula@iki.fi wrote:
23.11.2013 03:05, James Le Cuirot kirjoitti:
Anssi Hannula <anssi.hannula <at> iki.fi> writes:
Here's another revision of the ATI/AMD multichannel+HBR patchset.
Hi Anssi. Many thanks for your work on this. I am very keen to test this new code but have so far been unsuccessful. I have a Radeon 4670 (Sapphire branded) connected to a Yamaha RX-V773. I am running the sound/for-next kernel (82755ab) with your "missing PCM SAD" patch applied.
The new kernel has allowed ALSA to recognise the card as multichannel and I can issue the following speaker-test command but I still only hear "Front Left" and "Front Right" and the Yahama seems to report the signal as stereo.
# speaker-test -Dhdmi:CARD=HDMI,DEV=0 -c6 -t wav
I guess it is the same without "-t wav"?
Yes.
I have the HDMI cable plugged into the secondary output as my speakerless DVI monitor is plugged into the primary but I have also tried the HDMI cable in the primary output by itself.
Hmm, I'm not sure what the behavior is supposed to be with multiple video outputs when we have only a single audio output (HDA pin)...
What happens if you plug both of your outputs to the A/V receiver, will only one output get audio?
I tried this and as I expected, it sent the same audio to both outputs. Still stereo only though.
ELD stuff is not necessary for playback, it is mostly for information (and providing the necessary info for ELD is disabled on radeon DRI drivers on some kernels on some GPUs ATM due to some issues).
Is there anything interesting in "dmesg"?
I have attached my dmesg. I enabled ALSA debug and verbose printk but disabled the on-board HDA audio in the BIOS to make it less confusing, and also to see if it made any difference, which it didn't. The only entry I find noteworthy is about the ELD but you say this isn't required.
There seems to be little to go on here. Would it be worth enabling CONFIG_SND_DEBUG_VERBOSE? I gather it's very noisy but maybe that level of detail is needed. Hopefully you have a better idea.
Regards, James