# Debian 12 in Imac 2017

### Installare l'installer su pen drive

caricare la versione iso di debian 12 e installarlo in una chiavetta utilizzando Balena-Etcher

### Autorizzare lo user per lavorare come su (sudoers)

	su
	nano /etc/sudoers

inserire questa riga con user lo user che vuoi che abbia i privilegi di root 

	user    ALL=(ALL:ALL) ALL

uscita da su

	exit

### Installare sound su linux Debian 12 in un iMac 18.2 (late 2017)

	sudo apt-get install linux-headers-$(uname -r)
	sudo apt install build-essential
	sudo apt install git
	git clone http://forgit.patachina.it/Fabio/snd-hda-codec-cs8409.git
	cd snd-hda-codec-cs8409
	make
	sudo make install

fare il reboot

deriva da [git link](https://github.com/egorenar/snd-hda-codec-cs8409)  

### Installare tutti i pacchetti per Debian 12

copiare il file per un backup

	sudo cp /etc/apt/sources.list .

editare sources.list

	sudo nano /etc/apt/sources.list

cancellare tutto e inserire 	

	deb https://ftp.debian.org/debian/ bookworm contrib main non-free non-free-firmware
	# deb-src https://ftp.debian.org/debian/ bookworm contrib main non-free non-free-firmware
	
	deb https://ftp.debian.org/debian/ bookworm-updates contrib main non-free non-free-firmware
	# deb-src https://ftp.debian.org/debian/ bookworm-updates contrib main non-free non-free-firmware
	
	deb https://ftp.debian.org/debian/ bookworm-proposed-updates contrib main non-free non-free-firmware
	# deb-src https://ftp.debian.org/debian/ bookworm-proposed-updates contrib main non-free non-free-firmware
	
	deb https://ftp.debian.org/debian/ bookworm-backports contrib main non-free non-free-firmware
	# deb-src https://ftp.debian.org/debian/ bookworm-backports contrib main non-free non-free-firmware
	
	deb https://security.debian.org/debian-security/ bookworm-security contrib main non-free non-free-firmware
	# deb-src https://security.debian.org/debian-security/ bookworm-security contrib main non-free non-free-firmware

fare update e upgrade

	sudo apt update
	sudo apt upgrade

## Installare mesa (accellerazione grafica)

	sudo apt-get install mesa-utils

verificare con 

	glxinfo

con

	glxinfo | grep OpenGL
	
dovrebbe risultare qualcosa del tipo

	OpenGL vendor string: Intel Open Source Technology Center # The manufacturer
	OpenGL renderer string: Mesa DRI Intel(R) Haswell Desktop # The type of the chip
	OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.3.2 # The OpenGL version fully supported, here 3.3 thanks to Mesa 10.3.2 .
	OpenGL core profile shading language version string: 3.30 # The GLSL version fully supported

con il comando si verifica accellerazione 3D

	glxinfo | grep rendering

dovrebbe dare

	direct rendering: Yes

per vedere i frame per secondo

	glxgears -info