Steps to Reproduce: 1. Set "radeon" friver in xorg.conf. 2. Set any display resolution in xorg.conf. 3. run startx Actual results: X starts in 640x480 resolution and ATI driver rejects any resolutions higher than 640x480. Additional info: - monitor : iiyama LS902U Vision Master 1451 (17 pouces) - graphic card : powercolor x800Xl PCie - drivers : radeon
Created attachment 136302 [details] Xorg log
That log shows X starting at 800x600, not 640x480. This might be a BIOS parsing bug that's cropped up before.
My motherboard is an ASUS A8N SLI-Deluxe.
This could be the same problem I reported to xorg: https://bugs.freedesktop.org/show_bug.cgi?id=7243 Adding this option to xorg.conf radeon driver section fixed me up: Option "MonitorLayout" "TMDS, NONE" I still see this problem in FC6t3, but at least it now defaults to 800x600 instead of 640x480, so the screen is big enough to see the buttons during a graphical install :-).
Thanks Tom, if i add your option in my xorg.conf, X starting at 1600*1200. It very good but now I can't siwtch to 1280*1021 or 1024*768 resolutions ...
This should be fixed as of xorg-x11-drv-ati 6.6.2-4 and later. Please test and reopen this bug if this is still an issue for you. Thanks!