[Mini how-to] Sound and graphics on Dell Optiplex 7050 mini tower (Intel i5-6600)

[Máximo Pech]

The internal speaker didn't work out of the box for me, took some kernel debugging and experimentation to come out with the below settings. Apparently the codec is Realtek ALC255

Put this on /boot/device.hints

hint.hdac.0.cad2.nid3.config="as=0"
hint.hdac.0.cad0.nid27.config="as=4"
hint.hdac.0.cad0.nid33.config="as=4"

For the integrated intel graphics cards i915, I experienced screen tearing while scrolling on firefox, so I installed the legacy intel driver xf86-video-intel and put this on my Xorg configuration

/usr/local/etc/X11/xorg.conf.d/20-intel.conf

Section "Device"
    Identifier "Card0"
    Driver "intel"
    Option "AccelMethod" "sna"
    Option "TearFree" "true"
EndSection

Hope it helps