Andy Nguyen, known online as theflow0, has shown Linux running on a PlayStation 5 and used it to turn the console into what he describes as a Steam Machine. His clip shows Grand Theft Auto 5 Enhanced running with ray tracing at 1440p and 60 FPS, which is enough to move this project beyond a simple boot demo.
Andy said 4K HDMI video and audio are working, and all USB ports are functional. He also said his current setup runs at 3.2 GHz on the CPU and 2.0 GHz on the GPU, while a higher 3.5 GHz and 2.23 GHz configuration is possible, though his PS5 Slim reportedly overheats too...