I have a widescreen monitor with a native resolution of 1680x1050. I added the proper resolution to my xorg.conf, but KDE only goes as high as 1400x1050. The odd thing is, my monitor reports it's at 1680x1050, but the KDE desktop looks a bit stretched out, so I don't think it's working properly.

Anyone know how to get KDE to display properly on widescreen LCDs?
Thanks!

anyone?

This must be a real stumper. OK, I'll send you $5 via paypal if you can help me solve this.

I too am having this same problem with my Compaq R3240, I am trying many options in the Xconfig but no matter what i change i can't get the correct 1280x800 resolution. Anyone have an answer to this dilemma?

I am fighting with this same thing. However, I have done it in the past. For some reason, I had it working fine on Fedora Core, but I can't get the same thing up and going with Slackware. At any rate, here is my prior xorg.conf file that worked.

# XFree86 4 configuration created by pyxf86config

Section "ServerLayout"
Identifier "Default Layout"
Screen "WXGA Screen"
InputDevice "Alps Touchpad" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"

# RgbPath is the location of the RGB database. Note, this is the name of the
# file minus the extension (like ".txt" or ".db"). There is normally
# no need to change the default.
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Red Hat 6.0 and later now use a font server independent of
# the X server to render fonts.
RgbPath "/usr/X11R6/lib/X11/rgb"
FontPath "unix/:7100"
EndSection

Section "Module"
Load "synaptics"
Load "bitmap"
Load "dbe"
Load "ddc"
Load "extmod"
Load "freetype"
Load "glx"
Load "int10"
Load "record"
Load "type1"
Load "vbe"
# Load "dri"
EndSection

Section "ServerFlags"
Option "AllowMouseOpenFail" "yes"
EndSection

Section "InputDevice"

# Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
# Option "Xleds" "1 2 3"
# To disable the XKEYBOARD extension, uncomment XkbDisable.
# Option "XkbDisable"
# To customise the XKB settings to suit your keyboard, modify the
# lines below (which are the defaults). For example, for a non-U.S.
# keyboard, you will probably want to use:
# Option "XkbModel" "pc102"
# If you have a US Microsoft Natural keyboard, you can use:
# Option "XkbModel" "microsoft"
#
# Then to change the language, change the Layout setting.
# For example, a german layout can be obtained with:
# Option "XkbLayout" "de"
# or:
# Option "XkbLayout" "de"
# Option "XkbVariant" "nodeadkeys"
#
# If you'd like to switch the positions of your capslock and
# control keys, use:
# Option "XkbOptions" "ctrl:swapcaps"
# Or if you just want both to be control, use:
# Option "XkbOptions" "ctrl:nocaps"
#
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

# Doesn't work
# Section "InputDevice"
# Identifier "Mouse0"
# Driver "synaptics"
# Option "CorePointer"
# Option "Protocol" "event"
# Option "Device" "/dev/input/mice"
# Option "ZAxisMapping" "4 5"
# Option "Emulate3Buttons" "no"
#EndSection
Section "InputDevice"
Identifier "Alps Touchpad"
Driver "synaptics"
Option "Device" "/dev/input/event1"
Option "Protocol" "auto-dev"
Option "LeftEdge" "85"
Option "RightEdge" "830"
Option "TopEdge" "85"
Option "BottomEdge" "650"
Option "FingerLow" "14"
Option "FingerHigh" "15"
Option "EmulateMidButtonTime" "110"
Option "MaxTapTime" "110"
Option "MaxDoubleTapTime" "110"
Option "ClickTime" "110"
Option "MaxTapMove" "110"
Option "LockedDrags" "0"
Option "MinSpeed" "0.3"
Option "MaxSpeed" "1.0"
Option "AccelFactor" "0.02"
Option "LTCornerButton" "2"
Option "LBCornerButton" "3"
Option "EdgeMotionMinSpeed" "0"
Option "EdgeMotionMaxSpeed" "20"
Option "EdgeMotionMinZ" "55"
Option "EdgeMotionMaxZ" "80"
Option "EdgeMotionUseAlways" "1"
Option "UpDownScrolling" "1"
Option "VertScrollDelta" "20"
Option "HorizScrollDelta" "20"
Option "CircularScrolling" "1"
Option "CircScrollDelta" "0.1"
Option "CircScrollTrigger" "2"
Option "TouchpadOff" "0"
Option "SHMConfig" "on"
EndSection


# Original config
#Section "InputDevice"
# Identifier "Mouse0"
# Driver "mouse"
# Option "Protocol" "IMPS/2"
# Option "Device" "/dev/input/mice"
# Option "ZAxisMapping" "4 5"
# Option "Emulate3Buttons" "true"
#EndSection

# Also allow USB mouse
Section "InputDevice"
Identifier "USB Mouse"
Driver "mouse"
Option "SendCoreEvents" "true"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "Emulate3Buttons" "true"
Option "ZAxisMapping" "4 5"
EndSection

# Added by GAG
# Reference: http://cmb.phys.cwru.edu/kisner/linu...0/XF86Config-4
Section "Modes"
# Here is the optimal mode: 1280x800 @ 60.0Hz
Identifier "16:10"
# 1280x800 @ 60.00Hz (GTF) hsyn: 49.68kHz; pclk: 83.46Mhz
ModeLine "1280x800" 83.5 1280 1344 1480 1680 800 801 804 828
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Unknown monitor"
UseModes "16:10"
HorizSync 30-90
VertRefresh 50-75
Option "UseEdidFreqs" "1"
Option "FlatPanelProperties" "Scaling = aspect-scaled"
Option "dpms"
EndSection

# Non-twinview setup
Section "Device"
Identifier "NVidia GeForce4 420 Go 32M"
Driver "nvidia"
Option "NvAgp" "3"
Option "UseEdidFreqs" "1"
Option "FlatPenelProperties" "Scaling = aspect-scaled"
EndSection

# This monitor is only needed in the non-twinview setup
Section "Monitor"
Identifier "WXGA LCD"
UseModes "16:10"
HorizSync 30-90
VertRefresh 50-75
Option "UseEdidFreqs" "1"
Option "FlatPanelProperties" "Scaling = aspect-scaled"
Option "dpms"
EndSection

Section "Screen"
Identifier "WXGA Screen"
Device "NVidia GeForce4 420 Go 32M"
Monitor "WXGA LCD"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x800"
Virtual 1280 800
EndSubSection
EndSection

Section "DRI"
Group 0
Mode 0666
EndSection

i also have a 1680x1050 screen. i was able to get this working at the resolution by editing /etc/xorg.conf

and adding the line Modeline "1680x1050" 147.14 1680 1784 1968 2256 1050 1051 1054 1087

and if your using the new nvidia drivers add this also to your /etc/modprobe.conf
options nvidia NVreg_Mobile=0

hope this helps. now im trying to find how to optimize the settings now for that.

I'm using 1680x1050 (2005FPW) in gentoo/fluxbox with no problems that I'm aware of.. I migrated from a 1600x1200 CRT (P1110). There wasn't too much incident in getting it to work: just changed the refresh rates to those of the LCD's specs, and replaced the resolution limit to 1680x1050 within xorg.conf.. There was nothing tricky that needed to be done to get support of the larger resolution.

..does xorg log anything interesting about the resolution?

I'll have to remember about this topic when I am at home so I can post up my working config.