Re: Acer Aspire S3
You should have an /etc/default/grub, and it probably has the line
Add most of what they give there, (the splash is for a splash screen which you don't need, and quiet is there.
So you change what I had above to read
GRUB_CMDLINE="quiet rhgb pcie_aspm=force i915.i915_enable_rc6=1 acpi_osi=Linux acpi_backlight=vendor"
As far as I know, you shouldn't need a second line saying pcie_aspm force, as you already added it.
Then, the Fedora command is somewhat different. Instead of the update-grub, run
grub2-mkconfig -o /boot/grub2/grub.cfg
as root or using sudo, i.e., sudo grub2-mkconfig -o /boot/grub2/grub.cfg