Gigabyte HD4650

[goddo2305]

Hey,

 

Just installed Snow Leopard Retail and updated it to 10.6.7 with the combo update. Suprisingly Ethernet and bluetooth work out of the box. Audio half works. But my problem is i need to fix the resolution problem. it is stuck to 1024x768. Meaning the screen is quite small. Is there a way to fix this? It is a Gigabyte HD4650 with 1gb of Graphics memory,

 

This is what system profiler says about graphics:

 

 

Display:

 

Type: GPU

Bus: PCIe

PCIe Lane Width: x16

VRAM (Total): 256 MB

Vendor: ATI (0x1002)

Device ID: 0x9498

Revision ID: 0x0000

Kernel Extension Info: No Kext Loaded

Displays:

Display:

Resolution: 1024 x 768

Pixel Depth: 32-Bit Color (ARGB8888)

Main Display: Yes

Mirror: Off

Online: Yes

 

 

 

 

Thanks

[PookyMacMan]

Have you tried putting your device ID in the controller?

 

Open Terminal and type the following command: sudo nano /System/Library/Extensions/ATI4600Controller.kext/Contents/Info.plist. You will enter a simple text editor; scroll with the arrow keys to a section where it says IOPCIMatch. Underneath you will find an entry with numbers preceded by 0x; before the other numbers, you will type 0x[devid][venid], or in your case, 0x94981002. Once you are done, press Control-O to save and reboot in verbose by typing -v at the boot prompt to check for errors. Don't fret if it doesn't change; if it doesn't work, do this.

 

Download OSx86 Tools. Upon download, open it and click the button EFI String/Boot Flag. In the new window, click GFX strings. Click the pop-up menu and choose Custom GeForce. Follow the prompt for the name of your card, (you would type ATi Radeon HD 4650) and choose your ports (which, if I am not mistaken, is VGA / DVI). Once you're done, copy the entire hexadecimal EFI string. Now open Terminal again and type this: sudo nano /Extra/com.apple.boot.plist. Scroll down and press return to create a new line after the 5 under Timeout. Press tab and type device-properties. Press return again and type and paste the EFI string there. At the end type , save and reboot. See if graphics work then.

 

If you are not concerned about 3D acceleration (QE/CI), but only want a different resolution, you can edit your com.apple.boot.plist file as follows: type sudo nano /Extra/com.apple.boot.plist and scroll down to Kernel Flags. In the line below it, type at the end "Graphics Mode"=yourxresolutionx32. For example, if you wanted 1280x1024, you would type "Graphics Mode"=1280x1024x32.

 

Let us know how it goes.