Created attachment 23287 [details] xorg.conf (works fine on Fedora 8) I have two DVI-I-connected LCDs; one is 1680x1050 and the other is 1280x1024. As you can see from the xrandr output below, something is adding a 1400x1050 mode to the 1280x1024 LCD. I am able to use xrandr to change the resolution to 1280x1024. This is a fully updated (as of 24-Feb-2009) Fedora 10 system: xorg-x11-drv-radeonhd-1.2.4-1.1.20081212git.fc10.x86_64 xorg-x11-server-Xorg-1.5.3-13.fc10.x86_64 I have been using the radeonhd driver on Fedora 8 without seeing this problem: xorg-x11-drv-radeonhd-1.2.3-1.2.20081031git.fc8 xorg-x11-server-Xorg-1.3.0.0-47.fc8 Screen 0: minimum 320 x 200, current 2960 x 1050, maximum 2960 x 1050 DVI-I_1/analog disconnected (normal left inverted right x axis y axis) DVI-I_1/digital connected 1680x1050+1280+0 (normal left inverted right x axis y axis) 473mm x 296mm 1680x1050 59.9*+ 59.9 1400x1050 74.9 74.8 60.0 1280x1024 75.0 60.0 1440x900 74.9 60.0 1280x960 60.0 1152x864 75.0 74.9 1024x768 75.1 75.0 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 640x480 75.0 72.8 72.8 75.0 66.7 60.0 59.9 720x400 70.1 TV_SVIDEO disconnected (normal left inverted right x axis y axis) DVI-I_2/analog disconnected (normal left inverted right x axis y axis) DVI-I_2/digital connected 1400x1050+0+0 (normal left inverted right x axis y axis) 338mm x 270mm 1280x1024 60.0 + 75.0 60.0 1400x1050 60.0* 1280x960 60.0 1152x864 75.0 1024x768 75.1 75.0 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 640x480 75.0 72.8 72.8 75.0 60.0 59.9 720x400 70.1
Created attachment 23288 [details] Xorg.0.log
I should add that I have booted with the "nomodeset" parameter to ensure that the problem is not related to kernel modesetting.
Sounds very much like my bug 16740, where I was told to instead file an xrandr bug, which I did, bug 16927, which has gotten zero love from the X folks. A quick summary - X really really wants to make the Y-axes match on two displays, so will scale one of the displays no matter what you put for your Preferred Mode in the xorg.conf. However, a command-line smack from xrandr makes it right. One can script the xrandr command into an autostart shell script and go on with one's life, but I agree that it's a bug that one can't write a preference into the conf file that's actually obeyed.
Does this issue occur with the preferred ati driver (xf86-vide-ati)? If so, please move this to the Driver/Radeon component. Development of radeonhd has pretty much halted and development focus is on the ati driver. Please see http://www.x.org/wiki/radeonhd If the issue does not exist in the ati driver (or if there is no response to this message), this bug will be closed as WONTFIX unless someone contributes a patch.
Closing due to lack of response. Please reopen and move to the Driver/Radeon component if this issue persists with xf86-video-ati
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