I just installed FreeBSD 5.3 on a system with an Asus K7400-MX, 256 MB ram, 1.33 Thunderbird, with Via's KM400A integrated graphics. I ran xorgcfg, and set up the config file in /etc/X11/xorg.conf. I chose the KM400 chipset and "via" driver, and to have a 800x600 res. Despite this, when I start kdm, I always get a 640x480 resoultion, and KDE's control center won't allow me to change it.

The only ponential problem I can see here is the driver is listed for KM400, without the "A". If I choose other drivers, such as vga or vesa, X won't even start. What am I doing wrong?? Please help.

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xorg.conf

Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "Module"
Load "freetype"
# Load "xtt"
Load "extmod"
Load "glx"
Load "dri"
Load "dbe"
Load "record"
Load "xtrap"
Load "type1"
Load "speedo"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "SysMouse"
Option "Device" "/dev/sysmouse"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "XkbModel" "pc104"
Option "XkbLayout" "us"
EndSection

Section "Monitor"
Identifier "Monitor0"
### Uncomment if you don't want to default to DDC:
# HorizSync 31.5 - 35.1
# VertRefresh 50.0 - 70.0
EndSection

Section "Device"
Identifier "Card0"
Driver "via"
ChipSet "KM400"
Card "via KM400"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "800x600"
EndSubSection
EndSection

I had the same problem. you could only select between 640x480 and (EGAD) 320x240.

here is what you do:

for some reason, you can't get higher resolutions unless those two settings above (commented out) are set. I presume those are what xorg detected for your monitor. (i didn't even know there was an auto config thing... i had to figure them out manually.)

try uncommenting HorizSync and VertRefresh, pray that your monitor doesn't blow up*, and try starting X.

*(it won't really blow up, but you can screw up a monitor if those are set wrong. they look like pretty conservative values, so IMO you should be safe.)

Thanks - DDC was the problem.

To get it to work I also had to add:
Option "NoDDCValue" "yes"

to the config file. Apparently the via driver ignores the monitor section unless it sees this parameter.