sudo mv imac8.txt /etc/X11/xorg.conf
I don't know if you are looking for that command that will download the xorg.conf file for your computer or if you know that already. That quote is from my thread "fresh install Mint11 next to OSX 85% successful" . . . HOWEVER you would need to change the "imac8.txt" to whatever is the correct file for your computer, in both of the places it shows up. If you read through the link that JD provided you could see that he is back to using "nv" as the driver . . . . I also am using "nv" in my G4 . . . . This is from the top of my head but if you need to modify that file you enter "sudo nano /etc/X11/xorg.conf" to open that file and make any changes that you want . . . and then when finished hit "CTRL X" and the "y" to save the changes . . . and that would be to make the changes that JD showed in his example of the xorg.conf file he is using in the linked thread . . . except it looks like he's back to using "nv" as the more stable option. So if you nano that file you would be either changing "nouveau" to "nv" and if you were going to "nv" you would have to "wget" that "xserver - - nv" driver and then run the "sudo apt install xserver . . . . nv" . . . . . Anyway, hopefully that will help you, the details are smudged in my mind, but you can find a lot of detailed instruction by searching here or check out the posts by "str8bs" because he seemed to thrash out the G5 problems to some level of satisfaction . . . .