Messages in this thread |  | | Date | Fri, 01 Nov 2013 01:34:56 +0200 | From | Anssi Hannula <> | Subject | Re: [PATCH 1/4] ALSA: hda - hdmi: Add ATI/AMD multi-channel audio support |
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01.11.2013 01:25, Rafał Miłecki kirjoitti: > 2013/10/31 Anssi Hannula <anssi.hannula@iki.fi>: >>> But I can hear sound for rear right and rear left only :( >>> >>> Is there anything more I can provide to help resolve this? Do you have >>> any idea how we can resolve this? >> >> According to the below the receiver has separate PCM SADs for 2-channel >> and multichannel playback. However, due to a radeon driver bug (see >> "[PATCH] drm/radeon/audio: fix missing multichannel PCM SAD in some >> cases", you were CCd) the multichannel SAD is lost and not shown below. >> >> However, that is not (or at least should not be) the reason you are not >> getting audio. >> I suspect that the receiver does not support 192kHz multichannel audio >> (which would be indicated in the missing multichannel PCM SAD). Does it >> work with 48kHz or 96kHz? >> (TODO: refuse PCM playback in such cases) >> >> If it does not work with 48kHz or 96kHz either, then we have a bug to >> solve :) > > First of all, you're right about 2 SADs for PCM. > > The weird thing is that 192kHz support... According to the EDID (SADs) > it should be supported: > Format: 1 (PCM) Channels:1 Freq:0x7F (32-192) B2:0x07 (16-24b) > Format: 1 (PCM) Channels:7 Freq:0x7F (32-192) B2:0x07 (16-24b) > Format: 2 (AC3) Channels:7 Freq:0x07 (32-48) B2:0x50 (640?) > Format: 7 (DTS) Channels:7 Freq:0x06 (44-48) B2:0xC0 (1536?) > Format: 10 (EAC3) Channels:7 Freq:0x06 (44-48) B2:0x00 > Format: 11 (DTS_HD) Channels:7 Freq:0x7E (44-192) B2:0x01 > Format: 12 (MLP) Channels:7 Freq:0x1E (44-96) B2:0x00 > > So I performed more tests and: > > 1) speaker-test -D hdmi:CARD=Generic,DEV=0 -c6 -r192000 -F S16_LE > A nice noise for rear right and rear left, silent for the rest > > 2) speaker-test -D hdmi:CARD=Generic,DEV=0 -c6 -r176400 -F S16_LE > A nice noise for rear right and rear left, short "bump" sound for the rest > > 3) speaker-test -D hdmi:CARD=Generic,DEV=0 -c6 -r96000 -F S16_LE > A nice noise for all speakers (the same applies to 88200, 48000, 44100, 32000) > > I don't get it. Onkyo reports support for 192kHz and it supports it, > but only for 2 rear speakers... does it make any sense do you?
Just to check, is the display mode 720p50 or higher (as per HDMI spec 7.3.3)? Though I guess too small mode would cause something else, not this...
Also, does DTS-HD/TrueHD work with this receiver (interesting since those require 8-channel 192kHz link)?
Would be interesting to check if this works in Windows I guess (or maybe even just fglrx, though I can't think of a reason it'd make a difference).
-- Anssi Hannula
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