Comment 4 for bug 223774

Forwarding report from Ubuntu: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-trident/+bug/223774

Sounds like trident needs autodetection added and/or needs DDC probing shut off to prevent lockups.

"it was possible get the display on a Toshiba Satellite 1800 working by editing the Device section of of /etc/X11/xorg.conf to have Option "NoDDC" "true". (vesa driver doesn't work either)

The display adaptor built into the laptop is a Trident CyberBlade/i1

It turns out that the right xorg.conf works (but not the autogenerated from Hardy, and for Gutsy it must be present before the install configures xserver-xorg or it'll hang during the configuration of that package), provided the NoDDC option is present.

http://launchpadlibrarian.net/14025687/Xorg.0.log.hardy

The xorg.conf I used in gutsy (and hardy when the default one failed) is derived one at from http://michaelminn.com/linux/toshiba1800/, the result of which looks like this:

# xorg.conf (X.Org X Window System server configuration file)
#
# Custom file by Michael Minn

Section "InputDevice"
 Identifier "Generic Keyboard"
 Driver "kbd"
 Option "XkbRules" "xorg"
 Option "XkbModel" "pc105"
 Option "XkbLayout" "us"
EndSection

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

Section "Device"
    Identifier "Trident Microsystems CyberBlade/i1"
    Driver "trident"
    BusID "PCI:1:0:0"
    Option "NoDDC"
EndSection

Section "Monitor"
    Identifier "ToshLCD"
    Option "DPMS"
    HorizSync 30-71
    VertRefresh 50-100
EndSection

Section "Screen"
    Identifier "Default Screen"
    Monitor "ToshLCD"
    Device "Trident Microsystems CyberBlade/i1"
    DefaultDepth 24
    SubSection "Display"
        Depth 16
        Modes "1024x768" "800x600"
    EndSubSection
    SubSection "Display"
        Depth 24
        Modes "1024x768" "800x600"
    EndSubSection
EndSection

Section "ServerLayout"
 Identifier "Default Layout"
 Screen "Default Screen"
 InputDevice "Configured Mouse"
EndSection