I tried this tutorial :
Let's plug the LeD to the HeadPhone plug and see using a DigitalCamera and it's working if sound level are at 100%
Here is the script I used to check :
set -x freq=19000 l="1 10 100 1000 1000 10000 19000 100000" time=2 gain=100 lin="Master Headphone PCM PCM2 " amixer -c 0 || return $? for freq in $l ; do local card=0 for v in $lin ; do amixer -c $card sset $v 100% done play -n -c1 synth $time sine $freq gain $gain done
38KHz (2*19 KHz 76/2) is remote control frequencies…