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The following assumes:

• you got a clean 10.5.1 installation
• updated to 10.5.2 (take Netkas recommendations into account!) and then
• performed the Apple Leopard Graphics Update

And most likely since then you – as an ATI x1650 owner won’t be able to change the screen resolution and you have no QE/CI.After hazzling around with my system a lot I can at least offer a solution for the screen resolution problem. Requirements: you have no ATI hacks installed at all. Since I will modify the original ATINDRV.kext. I got device id 71c6 although this should not matter here. Before proceeding please do me the favor and tell me:

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I assume:

• you do backups of the files you’re going to modify, don’t you?
• you already enabled root access to your system
• you are logged in as root

1. copy /System/Library/Extension/ATINDRV.kext to your desktop
2. open the ATINDRV.kext package on your desktop
3. inside of this package go to /Contents/PlugIns/
4. open the ATY_Wormy.kext
5. inside this package go to /Contents/
6. open the file: Info.plist with your Texteditor
7. find this position:
<key>IONameMatch</key>
<string>ATY,Wormy</string>

8. and replace it with this:
   <key>IONameMatch</key>
<string>display</string>
9. find this position:
   <key>IOProviderClass</key>
<string>IONDRVDevice</string>
10. and replace with this:
    <key>IOProviderClass</key>
<string>IOPCIDevice</string>
11. save the changes and close the texteditor
12. replace the /System/Library/Extensions/ATINDRV.kext with the one you just edited on the desktop
13. reboot

After reboot the screen resolution should be selectable. Tell me your experiences. I did this with an ATI x1650 which got device id 71c6.

P.S. QE/CI will not be enabled with this! This will be part two ;-)

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