Emile “iMil” Heitor ‘s home

Un billet sous forme de pense bête. Au boulot, j’ai un bestiau de ce genre, qui a la bonne idée de posséder une sortie VGA. Voici les quelques bidouilles nécessaires pour tirer profit de cette dernière :

. Le malheureusement inévitable xorg.conf

Section "Files"
        FontPath        "/usr/share/fonts/X11/misc"
        FontPath        "/usr/X11R6/lib/X11/fonts/misc"
        FontPath        "/usr/share/fonts/X11/cyrillic"
        FontPath        "/usr/X11R6/lib/X11/fonts/cyrillic"
        FontPath        "/usr/share/fonts/X11/100dpi/:unscaled"
        FontPath        "/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
        FontPath        "/usr/share/fonts/X11/75dpi/:unscaled"
        FontPath        "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
        FontPath        "/usr/share/fonts/X11/Type1"
        FontPath        "/usr/X11R6/lib/X11/fonts/Type1"
        FontPath        "/usr/share/fonts/X11/100dpi"
        FontPath        "/usr/X11R6/lib/X11/fonts/100dpi"
        FontPath        "/usr/share/fonts/X11/75dpi"
        FontPath        "/usr/X11R6/lib/X11/fonts/75dpi"
        # path to defoma fonts
        FontPath        "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection

Section "Module"
        Load    "i2c"
        Load    "bitmap"
        Load    "ddc"
        Load    "dri"
        Load    "extmod"
        Load    "freetype"
        Load    "glx"
        Load    "int10"
        Load    "vbe"
EndSection

Section "InputDevice"
        Identifier      "Generic Keyboard"
        Driver          "kbd"
        Option          "CoreKeyboard"
        Option          "XkbRules"      "xorg"
        Option          "XkbModel"      "pc104"
        Option          "XkbLayout"     "us"
EndSection

Section "InputDevice"
        Identifier      "Configured Mouse"
        Driver          "mouse"
        Option          "CorePointer"
        Option          "Device"                "/dev/input/mice"
        Option          "Protocol"              "ImPS/2"
        Option          "Emulate3Buttons"       "true"
EndSection

Section "InputDevice"
        Identifier      "Synaptics Touchpad"
        Driver          "synaptics"
        Option          "SendCoreEvents"        "true"
        Option          "Device"                "/dev/psaux"
        Option          "Protocol"              "auto-dev"
        Option          "HorizScrollDelta"      "0"
EndSection

Section "Device"
        Identifier      "Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller 0"
        Driver          "i810"
        BusID           "PCI:0:2:0"
        Option  "AccelMethod"   "EXA"
        Screen          0
EndSection

Section "Device"
        Identifier      "Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller 1"
        Driver          "i810"
        BusID           "PCI:0:2:1"
        Option  "AccelMethod"   "EXA"
        Screen          1
EndSection

Section "Monitor"
        Identifier      "Monitor 0"
        Option          "DPMS"
        Option          "XAANoOffscreenPixmaps" "true"
EndSection

Section "Monitor"
        Identifier      "Monitor 1"
        Option          "DPMS"
        Option          "XAANoOffscreenPixmaps" "true"
EndSection

Section "Screen"
        Identifier      "Screen 0"
        Device          "Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller 0"
        Monitor         "Monitor 0"
        DefaultDepth    24
        SubSection "Display"
                Depth           24
                Modes           "1280x800" "1024x768"
                Virtual         2560 1024
        EndSubSection
EndSection

Section "Screen"
        Identifier      "Screen 1"
        Device          "Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller 1"
        Monitor         "Monitor 1"
        DefaultDepth    24
        SubSection "Display"
                Depth           24
                Modes           "1280x1024" "1024x768"
        EndSubSection
EndSection

Section "ServerLayout"
        Identifier      "Default Layout"
        Screen 0        "Screen 0"
        Screen 1        "Screen 1" RightOf "Screen 0"
        InputDevice     "Generic Keyboard"
        InputDevice     "Configured Mouse"
        InputDevice     "Synaptics Touchpad"
        Option "Clone" "false"
EndSection

Section "DRI"
        Mode    0666
EndSection

Section "Extensions"
        Option "Composite" "enable"
EndSection

Notez l’utilisation du module EXA, qui remplace avantageusement son ancètre XAA, moins véloce.

. La commande xrandr permettant d’”étendre” le display sur le second ecran :

$ xrandr --output VGA --mode 1280x1024

. Et en bonus, cette petite astuce qui permet de déplacer gnome-panel sur l’écran du portable, puisque par defaut, le panel va se coller sur l’écran supplémentaire :

$ gconftool --type int --set /apps/panel/toplevels/top_panel_screen0/monitor 1
$ gconftool --type int --set /apps/panel/toplevels/bottom_panel_screen0/monitor 1

Me voici donc muni d’un ecran virtuel de résolution 2560×1024, et franchement, ça tape. Ah, juste un bémol, la carte graphique du lappy est une Intel 945GM, et on peut lire ici et là qu’il n’est pas possible d’avoir du DRI avec une resolution dépassant 2048×2048. Pas cool.