On 23.12.2010 04:22, VDR User wrote:
Hi. After updating my stable kernel from 2.6.35.7 to 2.6.36.2, I get a problem when tuning HDTV channels that use surround sound. The error I get is as follows:
audio_alsa_out: Cannot set number of channels to 6 (err=-22:Invalid argument) audio_out: open failed!
With the following xine error: ---------------------- (ERROR) ---------------------- The audio device is unavailable. Please verify if another program already uses it.
['Audio device unavailable' ''] ------------------ (END OF ERROR) -------------------
What are the contents of /proc/asound/NVidia/eld* and /proc/asound/NVidia/codec* ?
This problem did not exist in 2.6.35.7 alsa drivers (using snd-hda-intel). I have noticed that there has been recent changes associated with ELD/EDID that sets limitations on channels. First of all I think this is a horrible idea since many devices don't even contain correct EDID. It's simply too unreliable to use.
Well, I haven't yet seen any EDID which contained incorrect audio information. Also, in case we find no information in the ELD, all channels and formats are allowed.
Secondly, could the above problem be related to those changes?
It could.
If anyone knows a fix for this or can point me in the right direction (aside of going back to 2.6.35.7), PLEASE fill me in.
Here are some system specs: debian testing kernel snd-hda-intel driver used for hdmi audio on nvidia gt240 video card hdmi going to 7.1 surround sound receiver & setup
Any help is greatly appreciated!
Best regards, Derek