Cannot change resolution with 8th Gen Intel CPU in Ubuntu 16.04
This is what helped me on 17.10 with an i3-8100 and 4k monitor, should work on 16.04 too.
- Do
sudo vi /etc/default/grubor use any other editor. - Find
GRUB_CMDLINE_LINUX_DEFAULTline and addi915.alpha_support=1to its value. It'll look likeGRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.alpha_support=1" -
sudo update-gruband reboot.
I've read somewhere we won't need alpha_support in 18.04.
All. I fix this issue with upgrading linux kernel to 4.15 which support coffee lake GPU