Jaroslav Kysela wrote:

>On Thu, 7 Mar 2002, Steffen Neumann wrote:
>
>>I have the problem that analog PCM center_lfe Output 
>>(and therefore also surround51 is not working on SBLive5.1.
>>While playback works on surround40, I can't send sound
>>to the center channel and get a message from libasound:
>>
>>      ALSA lib setup.c:343:(snd_config_get_ctl_elem_value) bad value index
>>
>>As far as I understood I need to set 
>>the combined Analog/Digital Output Jack 
>>to analog output, which I did using 
>>
>>      amixer sset 'SB Live Analog/Digital Output Jack' on
>>      Simple mixer control 'SB Live Analog/Digital Output Jack',0
>>        Capabilities: pswitch pswitch-joined
>>        Playback channels: Mono
>>        Mono: Playback [on] 
>>
>>I could not find means for further debugging,
>>so I'd like to know where to look from here on.
>>
>>System is Debian, gcc2.95.4, ALSA CVS from 02/26/2002
>>just before 0.9.0beta12 and yesterdays CVS, as well 
>>as some earlier CVS Versions in the past weeks.
>>
>>Any Ideas ?
>>
>
>This patch should fix this problem:
>
>....
>
Hi,

I also have the problem using the analog center and lfe channel on my 
SBLive 5.1. I applied your patch and set the SBLive Analog/Digital 
Output to analog. While ac3dec -6 <filename> no longer produces the 
error messages above. I still hear a lot of noise from the center 
speaker. Maybe there are still digital signals sent to the 
speakers....just a guess. Do I have to do something else to make full 
dolby 5.1 work?
Thanks in advance,

Udo Eisenbarth



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