Tech Source Raptor 4000 Series (for Linux) - Manual (Page 39)

Raptor 4000 Series: Reference Manual
©2009 Tech Source Inc. 33 Part #65-0271-01
4.7.2 Overriding DDC
If the monitor being used supports the DDC2B/EDID protocol, the
default resolutions will be determined using the Auto-Detect
feature. By default, the X server will start with the resolution that
DDC has reported. If the monitor is not DDC enabled, the
resolution defined in the
xorg.conf
file will be used.
To override or disable DDC mode, the
“DDCCheck” “off”
option must be uncommented in the
“Device” Section
in the
xorg.conf
file. It must be uncommented prior to starting the
Xserver for changes to take effect. By default, the
“DDCCheck”
“off”
option is commented out, so DDC is used.
When overriding DDC, the desired resolution should be defined in
the
xorg.conf
file. In addition, if you want to use a digital signal,
the option
Sync
in the
Device
section should also be
uncommented. To specify a particular resolution for your display,
refer to section 4.7.1.
In the example given below, the
“DDCCheck” “off”
option is
uncommented.
Section "Device"
Identifier "Rapafp0"
Driver "rapafp"
BusID "PCI:2:9:0"
Card "TSI Raptor 4000"
Option "Device" "/dev/rapafp0"
Option "Mode" "24"
Option "ScaleCursPos" "on"
Screen 0
Option "Head" "0"
Option "DDCCheck" "off"
# Option "Rotation" "+r"
# Option "Sync" "sx"
# Option "BackingStore"
# Option "SaveUnder"
# Option "TranspColor" "0x0a3246"
EndSection