Audio problems

[Christopher Ross]

This could be related to a regression I am seeing on Fedora 20. Pretty 
much every time a user logs in (or switch user) on Fedora 20 with KDE the 
audio output defaults to "headphones" and I have to manually change it to 
"line out", even though there is nothing connected to the headphones 
socket and there is an amplifier connected to the line out socket. If I do 
plug in headphones thereafter, the sound switches to headphones as it 
should. This used to work exactly as you would expect (i.e. defaulting to 
"line out" unless there are headphones plugged in) under Fedora 19 and 18 
before that on exactly the same hardware.

If anyone can point me to a solution I would be grateful.

Regards,
Chris R.


On Wed, 8 Jan 2014, Robert Moskowitz wrote:

> Lenovo x120e
>
> Builtin speakers work for a couple minutes after a boot, then typically stop 
> working.  Sometimes may work for a bit longer, but always stop.
>
> Headphones (you have to use a combo headphone/mic, like the one from your 
> smartphone) works no problem.
>
> The schematic from the manual shows the wires going into the jack component 
> and from there to the speaker component.  The bios speaker mute button 
> <Fn-esc> can tell the difference if a headset is plugged in or not (mute 
> headset/speaker); perhaps this is an impedence test.
>
> Can this in anyway be a software issue?  I suppose I could tear into the 
> unit.  I have a busted older unit; I cooked the processor board with a coke 
> (tm) spill.  I doubt it got the sound subsystem.
>
>
>
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