Manually installing Ubuntu on an older desktop
Solution 1:
Yeah, I have a pretty maxed out dell dimension e521 with 8gb of ram. It was working perfectly up until last week. I think the latest version of Ubuntu 16.0.4.7 uses the APIC stuff and that has messed up my boot. I remember before when this computer ran Ubuntu 18.04. The key to get it running was to use the grub commands
noapic acpi_use_timer_override