[alsa-devel] HBR audio with intel HDA

[Anssi Hannula]

02.08.2013 19:14, Ashecrow kirjoitti:
> 
> Le 2 août 2013 à 15:42, Anssi Hannula a écrit :
> 
>> 02.08.2013 16:11, Ashecrow kirjoitti:
>>> Hi Anssi,
>>> Thanks for your answer
>>>
>>> Test on kernel 3.8 + non-pcm bit in AES0:
>>> aplay -D hdmi:CARD=PCH,DEV=0,AES0=0x06 -c8 -fs16_le -r192000 dts.spdif
>>> => same result: no signal
>>
>> Hmh, OK.
>>
>>> With kernel upgrade to 3.9: same result
>>>
>>>
>>> Note that I have tested with alsa* 1.025 and intel-hda driver included in kernel
>>>
>>> Do you have any other idea?
>>
>> You could try DEV=1 instead of DEV=0 (according to your log DEV=0 is
>> correct, though), and truehd (thd.spdif from ffmpeg samples).
>>
>> If neither of those work, could you provide another alsa-info while
>> playing back using AES0=0x06 (with alsa debug enabled again)?
>>
> I have already tried DEV=1 but it does the same. Moreover, let me note that I play DTS and dolby fine with DEV=0 in xbmc. So I guess it is the right device.

OK. Note that in some cases you can hear stereo audio or AC-3/DTS even
when using wrong DEV=x (but HBR or multichannel audio would not work).

> see attached alsa-info.txt_dev0_kernel-3.8_aes0_dts-hd which is result of playing dts-hd spdif encapsulated with kernel 3.8 in debug mode and AES0=0x06 through command bellow
> 
> aplay -D hdmi:CARD=PCH,DEV=0,AES0=0x06 -c8 -fs16_le -r192000 dts.spdif
> 
> see attached alsa-info.txt_dev0_kernel-3.8_aes0_true-hd which is result of playing dts-hd spdif encapsulated with kernel 3.8 in debug mode and AES0=0x06 through command bellow
> 
> aplay -D hdmi:CARD=PCH,DEV=0,AES0=0x06 -c8 -fs16_le -r192000 thd.spdif
> 

Looks like your kernel is definitely too old to have working HBR on
Intel (the "ASP channel x => slot y" messages should have x=y), so
you'll need 3.9+.

Unfortunately I don't see anything else wrong (and HBR+intel works for
me), so I don't have anything else to suggest at the moment. Sorry.


> Thanks for your help
> 
>>
>>
>>> Thanks
>>>
>>>
>>> Le 1 août 2013 à 18:37, Anssi Hannula a écrit :
>>>
>>>> 01.08.2013 19:29, ashecrow42 at free.fr kirjoitti:
>>>>> Hi there,
>>>>
>>>> Hi!
>>>>
>>>>> I have troubles using HBR audio (DTS-HD and Dolby TrueHD). With every 
>>>>> test, I get no signal in the AV receiver. I have tested using a dts-hd 
>>>>> encapsulated in spdif sample file (found there 
>>>>> http://samples.mplayerhq.hu/hdmi/) and commands bellow
>>>>>
>>>>> - aplay -D hdmi devices
>>>>> - aplay -D hw devices
>>>>> - aplay -D plughw devices
>>>>
>>>> You need to set the non-pcm bit in AES0. Use e.g. "-D hdmi:AES0=0x06".
>>>>
>>>>> Note that I use ubuntu raring with 3.8 kernel that includes Xingchao's 
>>>>> HBR kernel patches.
>>>>>
>>>>>
>>>>> A. Configurations I have tested:
>>>>>
>>>>>
>>>>> - hda driver upgrade (alsa devel ubuntu team daily builds)
>>>>>
>>>>> - upgrade alsa-lib & alsa-utils (alsa-testing launchpad)
>>>>>
>>>>> - kernel upgrade to 3.9
>>>>
>>>> IIRC 3.9 (or newer) may indeed be needed since you have both hdmi and spdif.
>>>>
>>>>> - snd_hda_codec_realtek module backlist (to try to disable SPDIF) 
>>>>> /etc/modprobe.d/blacklist.conf
>>>>>
>>>>> - snd_hda_codec_realtek index = -2 in /etc/modprobe.d/alsa-base.conf
>>>>>
>>>>> - fresh new ubuntu raring install with no modifications at all: still 
>>>>> no signal
>>>>>
>>>>> B. Info:
>>>>>
>>>>> cat /proc/asound/card0/codec* | grep Codec
>>>>> Codec: Realtek ALC892
>>>>> Codec: Intel CougarPoint HDMI
>>>>>
>>>>> I use zotac ZBOX ID82 (intel HM65 chipset with hdmi and spdif)
>>>>>
>>>>> with alsa debug and alsa debug verbose enabled in kernel I got the 
>>>>> alsa-info.txt attached file produced on raring with no modification 
>>>>> while playing dts-hd sample file with command:
>>>>>
>>>>>
>>>>> aplay -D hdmi:CARD=PCH,DEV=0 -c8 -fs16_le -r192000 dts.spdif
>>>>
>>>> As per above you need to use
>>>> aplay -D hdmi:CARD=PCH,DEV=0,AES0=0x06 -c8 -fs16_le -r192000 dts.spdif
>>>>
>>>>>
>>>>> C. I add that:
>>>>>
>>>>> - In every test I have non HD audio protocols (DTS and dolby) working 
>>>>> well in the same configuration
>>>>>
>>>>> - I have tried with windows just to see if my hardware is broken and I 
>>>>> get DTS-HD audio with no problem
>>>>>
>>>>> - Takashi, I've read your HD-Audio.txt file and as far as I see, I have 
>>>>> no known error message in kernel log
>>>>>
>>>>>
>>>>> => I and Wingchao Wang have conclued that it is driver or codec 
>>>>> related. Can you help me please?
>>>>>
>>>>> Thanks a lot
>>>>> PS: sorry if you receive this email twice, I have sent it again as I 
>>>>> was not member of the list the first time.
>>>>
>>>>
>>>> -- 
>>>> Anssi Hannula
>>>
>>
>>
>> -- 
>> Anssi Hannula
> 


-- 
Anssi Hannula