Hey there! Nice choice pairing the AMD Radeon 7800XT with Ubuntu 22.04.3—this combo should work really well, and I’ve got some practical tips to help you get set up smoothly.

Compatibility Check #

First off, rest easy: Ubuntu 22.04.3 LTS (which uses the 5.15 kernel by default) has out-of-the-box support for the Radeon 7800XT (part of AMD's RDNA 3 lineup). The open-source AMDGPU driver that comes pre-installed is more than capable for most use cases—daily browsing, content creation, gaming, you name it.

Driver Options #

You’ve got two main driver paths to choose from, depending on your needs:

• Default Open-Source AMDGPU Driver: This is the go-to for most users. It’s stable, receives regular updates alongside your system, and handles 99% of everyday tasks and gaming (including Steam titles via Proton) perfectly. No extra installation needed—it’ll kick in as soon as you boot Ubuntu.
• Official Closed-Source AMD Driver: If you need specialized features (like professional rendering tools or specific optimizations), you can install AMD’s official driver. Here’s how:
  1. First update your system’s package list: sudo apt update
  2. Install the driver setup package: sudo apt install amdgpu-install
  3. Follow the on-screen prompts to select the components you need (e.g., graphics, compute)

Installation & Post-Setup Tips #

• When booting the Ubuntu installer, make sure your BIOS/UEFI is set to use the discrete GPU (7800XT) by default—don’t force integrated graphics unless you have a specific reason. This ensures the installer detects your card right away.
• If you run into display issues during installation (like wrong resolution or a black screen), try adding the nomodeset parameter to the boot options. This temporarily disables the graphics driver, letting you get into the system to tweak settings.
• Once Ubuntu is installed, run a full system update immediately to patch any minor compatibility kinks: sudo apt update && sudo apt upgrade -y This ensures your kernel and graphics drivers are fully up-to-date.

Gaming Performance Note #

If you’re planning to game, the 7800XT performs great on Ubuntu 22.04.3. Steam’s Proton compatibility layer lets you run most Windows games seamlessly, and the open-source driver delivers performance that’s nearly on par with Windows for most titles.

备注：内容来源于stack exchange，提问作者Panic