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Couper le son au démarrage d'un Mac depuis Debian

18/06/2019 - Aucun commentaire

#get root
sudo -i

ls /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82
#if the file doesn't exist, check SystemAudio serial with this command
efivar -l | grep SystemAudioVolume

#Make a backup
cp /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82 ~./SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82.backup

#remove the immutable flag before writing
chattr -i /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82

#Disable that anoying fucking hey-i-m-a-mac-head-hur-durr-sound
#WARNING, messing with efi is not advised !
printf "\x07\x00\x00\x00\x00" > /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82

reboot


Source : https://gist.github.com/0xbb/ae298e2798e1c06d0753