ATI mobility radeon x700 doesn't work.

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I also have the same problem, having an ATI X700 graphic card on an Asus laptop.
In fact, after installation is done, after the first reboot , you won't have anything printed on screen even though you can hear the "drums" notifying that you can now log into your new system. The problem is due to a bad configuration of the video card in xorg.conf. In order to use the graphic mode, you have to change to a text terminal (ctrl-alt-F1 to F6) and add this line in the Device section of xorg.conf:

Option "MonitorLayout" "LVDS,NONE"

After that, a restart of X server will bring the screen back to normal in the graphic terminal (ctrl-alt-F7).
I already had this problem in Breezy, and it would be a could thing if it can be resolved (automatic configuration during install) in Dapper.

please attach Xorg.0.log let's check what's wrong with it. It seems these ATI X700 chips have issues currently consolidating.

Hi,

My ATI x700 works now I had to add txo options after $ Driver "ati"

$ Option "BusType" " PCIE"
$ Option "MonitorLayout" "LVDS, NONE"

And I had to had "1280x800" after all $ SubSection "Display" to use
this definition

_Attach of my xorg.conf :

_Section "Files"
    FontPath "/usr/share/X11/fonts/misc"
    FontPath "/usr/share/X11/fonts/cyrillic"
    FontPath "/usr/share/X11/fonts/100dpi/:unscaled"
    FontPath "/usr/share/X11/fonts/75dpi/:unscaled"
    FontPath "/usr/share/X11/fonts/Type1"
    FontPath "/usr/share/X11/fonts/100dpi"
    FontPath "/usr/share/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 "type1"
    Load "vbe"
EndSection

Section "InputDevice"
    Identifier "Generic Keyboard"
    Driver "kbd"
    Option "CoreKeyboard"
    Option "XkbRules" "xorg"
    Option "XkbModel" "pc105"
    Option "XkbLayout" "fr"
    Option "XkbVariant" "latin9"
EndSection

Section "InputDevice"
    Identifier "Configured Mouse"
    Driver "mouse"
    Option "CorePointer"
    Option "Device" "/dev/input/mice"
    Option "Protocol" "ExplorerPS/2"
    Option "ZAxisMapping" "4 5"
    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 "ATI Technologies, Inc. Radeon Mobility X700 (RV410 PCIE)"
    Driver "ati"
       Option "BusType" "PCIE"
       Option "MonitorLayout" "LVDS, NONE"
    BusID "PCI:3:0:0"
EndSection

Section "Monitor"
    Identifier "Écran générique"
    Option "DPMS"
EndSection

Section "Screen"
    Identifier "Default Screen"
    Device "ATI Technologies, Inc. Radeon Mobility X700 (RV410 PCIE)"
    Monitor "Écran générique"
    DefaultDepth 24
    SubSection "Display"
        Depth 1
        Modes "1280x800" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
        Depth 4
        Modes "1280x800" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
        Depth 8
        Modes "1280x800" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
        Depth 15
        Modes "1280x800" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
        Depth 16
        Modes "1280x800" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
        Depth 24
        Modes "1280x800" "1024x768" "800x600" "640x480"
    EndSubSection
EndSection

Section "ServerLayout"
    Iden...

The graphics cards works perfectly the problem is ubuntu loads in the external monitor. Try attacing an external monitor to see what i mean.

[Expired for xserver-xorg-video-ati (Ubuntu) because there has been no activity for 60 days.]