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  #1  
Old 17th June 2005, 10:00 PM
dpw2atox Offline
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Join Date: Feb 2004
Age: 31
Posts: 37
Resolution Issue with FC4

Well Ive never had this problem before but for some reason i cant get my resolution up to 1600x1200. Ive tried editing my /etc/X11/xorg.conf file and if i run system-config-display the resolution is set to go up to 1600x1200 however when i try and change it, the highest it goes up to is 1400x1050. Any ideas? here's the 2 parts of my xorg.conf file.

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Dell 2001FP (Analog)"
HorizSync 31.0 - 80.0
VertRefresh 56.0 - 76.0
Option "dpms"
EndSection


Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1600x1200" "1280x1024" "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1600x1200" "1400x1050" "1280x960" "1280x800" "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
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  #2  
Old 18th June 2005, 04:17 PM
dpw2atox Offline
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Join Date: Feb 2004
Age: 31
Posts: 37
any ideas at all?
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  #3  
Old 18th June 2005, 07:49 PM
cub Offline
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Join Date: May 2005
Location: Stockholm, Sweden
Age: 42
Posts: 46
I'm not sure but could it be that X try to run 1600 at 76 Hz? According to Dell for your monitor:
Vertical scan range 56 Hz to 76 Hz, exception 1600 x 1200 at 60 Hz only

I'm told that X chose the "correct" vertsync automatically but I've had trouble with it on my pc so maybe it doesn't? Though I'm pretty new to linux so...
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  #4  
Old 19th June 2005, 04:50 AM
dpw2atox Offline
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Join Date: Feb 2004
Age: 31
Posts: 37
i never had this problem before which is whats weird. maybe i'll try changing that tomorrow. not near the pc tonight. anone else have an ideas?
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  #5  
Old 11th May 2006, 05:48 AM
gundalba Offline
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Join Date: Apr 2006
Posts: 2
Try following; (Got into same issue w/ FC5 and following helped me).

Check your /var/log/Xorg.#.log file and if it complains about "mode clock 162MHz exceeds DDC maximum 160MHz".
Addtionally it may also report the DisplaySize incorrectly like "Image Size: 367 x 275 mm".

Modify /etc/X11/xorg.conf to show;

Section "Monitor"
:
DisplaySize 408 306
:
ModeLine "1600x1200" 160.00 1600 1664 1856 2160 1200 1201 1204 1250

Good luck...

Last edited by gundalba; 11th May 2006 at 05:51 AM.
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  #6  
Old 7th June 2006, 02:20 PM
mnin Offline
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Join Date: Jun 2006
Posts: 1
Hello,

I have solve this problem by adding in file /etc/X11/xorg.conf the following line in : Section "Device"
Option "NoDDC"

Section "Device"
Identifier "Videocard0"
Driver "i810"
VendorName "Videocard vendor"
BoardName "Intel 865"
Option "NoDDC"
EndSection
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