have installed nvidia and intel drivers as shown below (intel check):
sudo dmesg | grep microcode
[sudo] hasło użytkownika pawel:
[ 0.000000] microcode: microcode updated early to revision 0x24, date = 2018-01-21
[ 0.928970] microcode: sig=0x306c3, pf=0x20, revision=0x24
[ 0.929135] microcode: Microcode Update Driver: v2.2.
...on asus laptop but intel isn't available to choose in ubuntu's 'additional drivers' section, only nvidia is available
as for this I can't switch to intel via nvidia prime (login loops in intel mode, so I switch back to nvidia via terminal sudo prime-select nvidia)
any ideas? have reinstalled intel packages but no difference
I'm obviously late to the party here, but have you installed the intel-microcode packages?
https://launchpad.net/ubuntu/artful/+package/intel-microcode