Comment 443 for bug 1776563

As i wrote i still use parameters.
ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2
For me i couldn't boot with anything other then pci=noacpi before, but now ivrs parameters work and i got a working touchpad.
"Things seem to work" is because i have only used the laptop for a day and i haven't tested every single scenario, but as far as i can tell it works.
I wasn't able to boot with ivrs parameter before and i had no use of the laptop that was only useful as an paperweight, it couldn't suspend or hibernate.
Now i have a working laptop that i can finally use and no fans going berserk.