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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