#amixer — Public Fediverse posts

https://blog.gslin.org/archives/2025/12/10/12777/%e4%b8%ad%e5%9c%8b%e7%9a%84-nanokvm-%e5%85%a7%e8%97%8f%e9%ba%a5%e5%85%8b%e9%a2%a8%e4%bb%a5%e5%8f%8a%e7%9b%a3%e8%81%bd%e8%bb%9f%e9%ab%94/

中國的 NanoKVM 內藏麥克風以及監聽軟體

#aircrack #amixer #arecord #backdoor #china #ip #kvm #linux #mic #micphone #nanokvm #network #security #ssh #tcpdump #wifi

#No, I love linux audio

# is the ultra attached
if aplay -l | grep -qi ultra
then
echo ultra

#adjust amplitude
i=0
j=0
for i in $(seq 8); do
for j in $(seq 8); do
if [ "$i" != "$j" ]; then
amixer -c Ultra set "DIn$i - Out$j" 0% > /dev/null
#amixer -c Ultra set "DIn$i - Out$j" 100% > /dev/null
else
amixer -c Ultra set "DIn$i - Out$j" 100% > /dev/null
fi
amixer -c Ultra set "AIn$i - Out$j" 0% > /dev/null
#amixer -c Ultra set "AIn$i - Out$j" 100% > /dev/null
done
done

for i in $(seq 4); do
amixer -c Ultra set "Effect Return $i" 0% > /dev/null
done

#start jack
#jackd -d alsa -d hw:Ultra -r 48000 -p 2048 &
#else
#start jack with default hardware
#jackd -d alsa -d hw:PCH -r 48000 &
fi