AC97 sound card needs "external amp" ?

Jason Vas Dias jvdias at redhat.com
Fri Apr 22 23:40:02 UTC 2005


On Fri, 2005-04-22 at 19:13, Sean Bruno wrote:
> Just ran the sound card detection app to see if audio is working.  For
> some reason I need to check the "external amp" selection to get any
> audio at all.  
> 
> I don't think that this is correct, but can someone else check to see if
> this is true for them?
> 
> Device:
> 00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM
> (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)
> 
> Sean
I've found you need to ensure the "Headphone Jack Sense"
switch is "muted", using eg. alsamixer / kmix to get
any audio at all. You can store this setting with 
'alsactl store' and restore it in /etc/rc.local with 
'alsactl restore'.




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