ATI Radeon 9200 AGP card stuck on 640 x 480

I have a PowerMac G4 400Mhz AGP Graphics computer running OS 9.2.2. I've recently replaced the video card with an ATI Radeon 9200 AGP card. When I plug in a Dell VGA flat panel monitor, the only display mode available is 640 x 480. I've installed all the necessary ATI updates and drivers. All the extensions for this are enabled. I also tried replacing the dell monitor with a Samsung SyncMaster 173P monitor so that I could try plugging into the DVI port. Similar situation. It only allows a display mode of 1280 x 1024.

Any ideas as to why this is happening?

PowerMac G4 400Mhz AGP Graphics, Mac OS 9.2.x

Posted on Jan 29, 2008 8:27 PM

Reply
5 replies

Jan 30, 2008 2:27 PM in response to Daryl Vogel

A flashed card is a PC version that has had the ROM replaced with Mac ROM- basically, it's a hacked card. Flashed cards are usually found through sources such as eBay....
Sometimes, the ROM is partial, causing limited performance, or, there are physical (hardware) limitations of the card.
Also, OS 9 has narrow graphics card support (compared to OS X), confined to Mac specific cards.

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ATI Radeon 9200 AGP card stuck on 640 x 480

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