I have looked literally everywhere possible to find a solution to enable at least changing resolution on the ATI x1300 Pro dev id 7183.
I've also tried every method available to try and patch the problem, all of which failed and resulted in a total blackout of the screen and a kernel panic.

I've read threads that say that somebody is working on a custom kext for the X1300 (DiaboliK), but so far I've heard nothing from him on the topic.
I'm calling on all current owners of this card as well as driver developers to help out with this. This is one of the very few cards that doesn't work with any OSX86 system. We might as well try to make this even basically work.

~ NUCLEaR

Bump for great justice.

I have the exact same computer and card... i only know how to change the resolution :-\...

You have to edit your com.apple.Boot.plist which is located in /Library/Preferences/SystemConfiguration/
add the following lines

<key>Graphics Mode</key>
<string>1280x1024x32</string>

but of course punch in ur own resolution... then reboot... works fine for me... still waiting for the driver to come around...

Thanks a lot, I'll be trying this out as soon as I can.

Update: Thanks a lot! It worked perfectly and I also updated my guide for the E521 with these instructions.