UCS 4.2 old Hardware black screen

hardware
ucs-4-2

#1

I can’t boot with UCS iso on old hp dl 380 g5, i think is related with new kernel 4.9
After boot menu, every option result in a black screen without activity

After try some options i can boot it with acpi=off

Any suggestion how to fix the value on boot menu so prevent problems in futures upgrades?


Can't boot into 4.9 after upgrade from 4.1 to 4.2
#2

For now and until best option i add acpi=off in ucr boot/splash option

ucr set grub/bootsplash="nosplash acpi=off"

#3

There is also a UCRV named “grub/append” at least in 4.1