Order of the Butterfly
Posts: 313 from 2015/6/18
The problem is the openfirmware rom on the video board. I not found any linux distro if the bug is fixed! All distribution assume you have a x86 bios on the board. But the x1900 mac edition not have a x86 bios....
In practice if you use a frame buffer you have the colors corrupted (little endian vs big endian), if you use the radeon driver the screen remain black.
The only option is: "radeon.modeset=0" and text console.
Ok, so it's the kernels drm driver which is not working. I suggest you download a recent 4.19.x kernel and build from source. And it would be a good thing if your distribution uses gcc 6.4/6.5.
I don't think the problem is the card having a Mac-BIOS. All my AGP-Cards and the NVIDIA in the G5 11,2 run just fine with Mac-BIOS.
Talos II. [Gentoo Linux] | PMac G5 7,3. PMac G4 3,6. PBook G4 5,8. [MorphOS 3.12; Gentoo/Void/Adelie Linux] | A1200. ACA-1233, Indivision AGA Mk2. [AmigaOS 3.2]