UCS 4.2 old Hardware black screen



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

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

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


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