Il y a un autre onglet pour définir le type d'écran, choisi un modèle avec résolution + grande.
Si tu n'arrives pas à fixer la résolution voulue alors que ton écran la supporte, tu peux essayer les modelines:
$ gtf 1152 864 75
Modeline "1152x864_75.00" 104.99 1152 1224 1352 1552 864 865 868 902 -HSync +Vsync
Pour utiliser les modelines, voici un exemple de xorg.conf:
# Xorg configuration created by system-config-display
Section "ServerLayout"
Identifier "single head configuration"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules/extensions/nvidia"
ModulePath "/usr/lib64/xorg/modules/extensions/nvidia"
ModulePath "/usr/lib64/xorg/modules"
ModulePath "/usr/lib/xorg/modules"
EndSection
Section "Module"
SubSection "extmod"
Option "omit xfree86-dga" # don't initialise the DGA extension
EndSubSection
Load "glx"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "fr"
EndSection
Section "Monitor"
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
Identifier "Monitor0"
ModelName "Monitor 1280x1024"
### Comment all HorizSync and VertSync values to use DDC:
HorizSync 31.5 - 79.0
VertRefresh 50.0 - 90.0
ModeLine "1152x864_75.00" 105.0 1152 1224 1352 1552 864 865 868 902 -hsync +vsync
Option "dpms"
EndSection
Section "Device"
# Enable 32-bit ARGB GLX Visuals
# Option "DisableGLXRootClipping" "True"
Identifier "Videocard0"
Driver "nvidia"
Option "AddARGBGLXVisuals" "True"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 1
Modes "1152x864_75.00" "1152x768" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
Modes "1152x864_75.00" "1152x768" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
Modes "1152x864_75.00" "1152x768" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
Modes "1152x864_75.00" "1152x768" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1152x864_75.00" "1152x768" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1152x864_75.00" "1152x768" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
Section "Extensions"
Option "Composite" "Enable"
EndSection