Ubuntu
xorg package

Force a monitor modeline in xorg.conf

Asked by Bob Bib

How to force a specific monitor modeline in xorg.conf ?

---

Section "Monitor"
 Identifier "Monitor0"
 Modeline "1024x768_100.00" 112.25 1024 1096 1200 1376 768 771 775 816 -hsync +vsync
EndSection

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Sam_
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Best Sam_ (and-sam) said : 		#1

"PreferredMode"
https://wiki.ubuntu.com/X/Config/Resolution#Setting_resolution_changes_in_xorg.conf

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Bob Bib (bobbib) said : 		#2

Option "PreferredMode" "1024x768_100.00"
---
"Preferred" sounds not so strict as "forced" :)

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Bob Bib (bobbib) said : 		#3

"PrefferredMode" doesn't work when monitor is attached after the boot-up process is finished, but the following config works well.
---
Section "Monitor"
    Identifier "Monitor0"
    VendorName "Samsung"
    ModelName "SyncMaster"
    HorizSync 30.0 - 110.0
    VertRefresh 50.0 - 160.0
    Option "DPMS" "true"
    Modeline "1024x768_100.00" 112.25 1024 1096 1200 1376 768 771 775 816 -hsync +vsync
EndSection

Section "Screen"
    Identifier "Screen0"
    Monitor "Monitor0"
    DefaultDepth 24
    SubSection "Display"
        Depth 24
 Modes "1024x768_100.00"
    EndSubSection
EndSection

Revision history for this message
Bob Bib (bobbib) said : 		#4

Thanks Sam_, that solved my question.