Bonsoir,
Voici ce que donne gedit /etc/X11/xorg.conf
après l’introduction enregistrée du nouveau modeline dans la section "Monito"r et la section “Screen” (je te mets le nécessaire en gras) :
root@henridebian:/home/henri# gedit /etc/X11/xorg.conf
(gedit:12190): EggSMClient-WARNING **: Failed to connect to the session manager: None of the authentication protocols specified are supported
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 “Screen0” 0 0
InputDevice “Mouse0” "CorePointer"
InputDevice “Keyboard0” "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/usr/share/fonts/X11/cyrillic"
FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "built-ins"
EndSection
Section "Module"
Load "dri"
Load "dri2"
Load "record"
Load "glx"
Load "dbe"
Load "extmod"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option “Protocol” "auto"
Option “Device” "/dev/input/mice"
Option “ZAxisMapping” "4 5 6 7"
EndSection
Section “Monitor”
#DisplaySize 480 270 # mm
Identifier "Monitor0"
VendorName "DEL"
ModelName "DELL P2210H"
HorizSync 30.0 - 83.0
VertRefresh 56.0 - 76.0
Modeline “1360x768_60.00” 84.72 1360 1424 1568 1776 768 769 772 795 -HSync +Vsync Option "DPMS"
EndSection
Section “Device”
### Available Driver options are:-
### Values: : integer, : float, : “True”/“False”,
### : “String”, : " Hz/kHz/MHz"
### [arg]: arg optional
#Option “NoAccel” # []
#Option “SWcursor” # []
#Option “Dac6Bit” # []
#Option “Dac8Bit” # []
#Option “BusType” # []
#Option “CPPIOMode” # []
#Option “CPusecTimeout” #
#Option “AGPMode” #
#Option “AGPFastWrite” # []
#Option “AGPSize” #
#Option “GARTSize” #
#Option “RingSize” #
#Option “BufferSize” #
#Option “EnableDepthMoves” # []
#Option “EnablePageFlip” # []
#Option “NoBackBuffer” # []
#Option “DMAForXv” # []
#Option “FBTexPercent” #
#Option “DepthBits” #
#Option “PCIAPERSize” #
#Option “AccelDFS” # []
#Option “IgnoreEDID” # []
#Option “CustomEDID” # []
#Option “DisplayPriority” # []
#Option “PanelSize” # []
#Option “ForceMinDotClock” #
#Option “ColorTiling” # []
#Option “VideoKey” #
#Option “RageTheatreCrystal” #
#Option “RageTheatreTunerPort” #
#Option “RageTheatreCompositePort” #
#Option “RageTheatreSVideoPort” #
#Option “TunerType” #
#Option “RageTheatreMicrocPath” #
#Option “RageTheatreMicrocType” #
#Option “ScalerWidth” #
#Option “RenderAccel” # []
#Option “SubPixelOrder” # []
#Option “ClockGating” # []
#Option “VGAAccess” # []
#Option “ReverseDDC” # []
#Option “LVDSProbePLL” # []
#Option “AccelMethod” #
#Option “DRI” # []
#Option “ConnectorTable” #
#Option “DefaultConnectorTable” # []
#Option “DefaultTMDSPLL” # []
#Option “TVDACLoadDetect” # []
#Option “ForceTVOut” # []
#Option “TVStandard” #
#Option “IgnoreLidStatus” # []
#Option “DefaultTVDACAdj” # []
#Option “Int10” # []
#Option “EXAVSync” # []
#Option “ATOMTVOut” # []
#Option “R4xxATOM” # []
#Option “ForceLowPowerMode” # []
#Option “DynamicPM” # []
#Option “NewPLL” # []
#Option “ZaphodHeads” #
Identifier "Card0"
Driver "radeon"
VendorName "ATI Technologies Inc"
BoardName "RV370 5B60 [Radeon X300 (PCIE)]"
BusID "PCI:1:0:0"
EndSection
Section “Screen”
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1Modeline “1360x768_60.00” 84.72 1360 1424 1568 1776 768 769 772 795 -HSync +Vsync
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4Modeline “1360x768_60.00” 84.72 1360 1424 1568 1776 768 769 772 795 -HSync +Vsync
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8Modeline “1360x768_60.00” 84.72 1360 1424 1568 1776 768 769 772 795 -HSync +Vsync
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15Modeline “1360x768_60.00” 84.72 1360 1424 1568 1776 768 769 772 795 -HSync +Vsync
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16Modeline “1360x768_60.00” 84.72 1360 1424 1568 1776 768 769 772 795 -HSync +Vsync
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24Modeline “1360x768_60.00” 84.72 1360 1424 1568 1776 768 769 772 795 -HSync +Vsync
EndSubSection
EndSection
…Et toujours pareil.
Au redémarrage, j’ai toujours “Impossible d’appliquer la configuration etc…”
Mais il y a une chose qui n’est pas claire dans mon esprit : j’ai procédé à 2 reprises à des modifications de Xorg dans l’écran noir après être passé en tty. (J’ai sauvegardé, redémarré mais ça n’a rien donné comme je te l’ai déjà dit.)
Là, pour la première fois, j’ai fait la modification dans gedit /etc/X11/xorg.conf sur fond blanc (ce qui est beaucoup plus agréable) : mais est-ce que c’est pareil ?
Est-ce que j’ai le choix entre l’un ou l’autre ? Ou est-ce que je dois procéder aux modifications dans l’un et l’autre ?
Bon, j’arrête pour ce soir parce que je fatigue mais j’ai progressé et je me sens beaucoup plus à l’aise dans Xorg.
A + 

desolé
),pour ce faire