Old Vintage Computing Research: Dusting Off Dreamcast Linux

From all the variants mentioned across the comments, the PS2Linux was the best one, being officially supported by Sony.

Originally they had though as a means to foster indie development, instead people got to use it for emulation, thus PS3 Linux Other OS no longer supported graphics acceleration, and then was completly dropped in a firmware upgrade.

On the PS2, we had official Linux CDs from Sony, a hard drive, connection cables, and a whole development environment, a GL like API, another more low level console like, both with hardware acceleration (although the actual one used on the devkit wasn't exposed).

I had that kit and it was really good.

I actually used it to write a small game to demonstrate the PS2 architecture in my CS undergrad capstone project.

It was slooooooooow even by the standards of the time.