20.04 doesn't support Intel Core i5 10400?

I've just purchased a brand new computer and tried to install Ubuntu 20.04, but it only boots in safe graphics mode, and after installation, I get a black screen. When I go for 21.04, everything works fine, but I'd prefer the LTS version for obvious reasons.

Hardware details: Processor: Intel Core i5 10400 with onboard graphics, motherboard: Gigabyte Z590 GAMING X

Am I doing something wrong or is that hardware not supported by 20.04?

(I'm a hardware and linux noob)

Intel Core i5 10400 was released in May 2020, after Ubuntu 20.04.

Your 20.04 kernel is too old for your hardware. Try a newer kernel.

• You can test a newer kernel using a LiveUSB Installer's "Try Ubuntu" environment. This won't affect your current system, and is an easy way to check function before committing.

• Alternately, you can upgrade your old LTS kernel using the HWE stack. This will affect your current system, and is difficult to undo if you're not an expert.

• Or you can simply install a newer release of Ubuntu. Some complex non-Ubuntu software (like development environments) is packaged LTS releases only, and won;t work with other releases, so check your sources before committing to this path.