NoDDC option doesn't work for trident cyberblade/i1 resulting in system lockup
Submitted by Bryce Harrington @bryce
Assigned to Xorg Project Team
Description
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
Version: 7.3 (2007.09)