andy Posted December 21, 2005 Share Posted December 21, 2005 I'm playing with 10.4.3 8f1111 on an SSE2 P4 system. I have an AGP ATI Radeon 9550 installed and working with the 9700 driver as discussed in another thread. Core Image and Quartz Extreme are both shown as supported in system info. I still can't change resolution, color depth, or refresh rate in the display control panel. What's causing this and is there a fix yet? Link to comment https://www.insanelymac.com/forum/topic/6009-ati-9550-change-resolutions/ Share on other sites More sharing options...
Eggman Posted December 21, 2005 Share Posted December 21, 2005 (edited) Okay; I'm assuming you want a resolution of 1280x1024, a color depth of 24 and a refresh rate of 75. Adjust accordingly. Navigate to /Library/Preferences/SystemConfiguration/. Then, open com.apple.Boot.plist in TextEdit. Right before: </dict> </plist> Put in (don't forget the tabs!): <key>Graphics Mode</key> <string>1280x1024x24@75</string> Good luck! Edited December 21, 2005 by Eggman Link to comment https://www.insanelymac.com/forum/topic/6009-ati-9550-change-resolutions/#findComment-37874 Share on other sites More sharing options...
Tiburon Posted December 21, 2005 Share Posted December 21, 2005 9550 isnt VESA 3.0 afaik, thus the refresh rate wont work Link to comment https://www.insanelymac.com/forum/topic/6009-ati-9550-change-resolutions/#findComment-37962 Share on other sites More sharing options...
andy Posted December 21, 2005 Author Share Posted December 21, 2005 So is this problem because I'm using a driver that wasn't specifically written for this card? I assume the dev machines let you change to any resolution, or refresh rate. Do any video cards other than the one built into the dev machines work properly yet? I figured not being able to change resolutions was caused by not having a driver for the video card. Thanks for the work around, but it's not exactly convenient. You also can't use full screen itunes visualization since it can't change resolutions on the fly. I guess I'll have to wait for proper drivers. Link to comment https://www.insanelymac.com/forum/topic/6009-ati-9550-change-resolutions/#findComment-37976 Share on other sites More sharing options...
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