emac. G4 1.25 RV280 [RADEON 9200]

[tiwmid]

https://imgur.com/a/xIXuUZ1

[ernsteiswuerfel]

If you want a much more painfree experience with Linux on G3/G4/G5 hardware just skip this outdated distro and use another one. Also G3/G4/G5 PPC is no longer supported by Ubuntu.

These are (better) alternatives with bootable isos, current software (working browser, etc.) and current kernels:
https://voidlinux-ppc.org/
https://www.adelielinux.org/
https://fienixppc.blogspot.com/p/download.html (64bit only, USB boot image)

Also no need to fiddle around with yaboot any longer. Void and Adelie use grub just like you know it from Linux on regular x64_64 hardware.