[alsa-devel] [PATCH v3 0/5] ALSA: hda - hdmi: ATI/AMD multi-channel and HBR support

[James Le Cuirot]

On Sat, 23 Nov 2013 17:45:00 +0200
Anssi Hannula <anssi.hannula at iki.fi> wrote:

> 23.11.2013 17:40, James Le Cuirot kirjoitti:
> > On Sat, 23 Nov 2013 03:29:28 +0200
> > Anssi Hannula <anssi.hannula at 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
> > 
> > 
> >> 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.
> 
> Yeah, that would be useful.

I have now done that. It was not as noisy as I expected and only added a
few more messages. I broke the message size limit last time so I have
posted the log to Gist instead. The timings are noted there.

https://gist.github.com/chewi/7628058

Regards,
James