boot – Live USB of Ubuntu 18.04.2 or later not booting without “acpi=off” or “nolapic”

I tried to install Ubuntu 20.04 in my desktop but live usb did not boot showing only a blank screen.

Following the instruction below, I found that only when I added acpi=off or nolapic (and nomodeset because of nvidia gpu) to the kernel option, but the PC recognized only a single core of a cpu and the installation failed. Other options (e.g. acpi=ht) did not work.

https://askubuntu.com/a/132817/1420960

Trying several distros, I also found that Ubuntu 18.04.1 works but 18.04.2 or later does not. I installed Ubuntu 18.04 and then upgraded it to 20.04, and confirmed that my PC works with kernel 4.15 but not 5.4.

What is a problem and what should I do to install newer Ubuntu in my desktop?

  • CPU: Intel Core i9 10980XE
  • RAM: 128 GB
  • GPU: NVIDIA GeForce RTX 2080 Ti
  • MB: X299-S01A