some time ago, I installed FC4. i bought a new screen that didnt support the hz and resolution i had (1280 x 1024 @ 85 Hz) i set the Hz to 60 and my new monitor worked. now i have reinstalled FC4 with my new screen. and now i can only coose between 800x600 and 1024x768, BUT up to 85 Hz!

my goal is to get 1280 x 1024 @ 60Hz

I think its like this, my new screen can use 1280 x 1024, but not with something higher than 60 Hz. i read about something that this problem could be solved in /etc/X11/xorg.conf but i dont know how.

i tried editing some values but none of it seemed to work.

/p

i hope you have the documentation that came with your monitor that will make it easy. first look up what your vertical and horizontal sync rate of your monitor is.

then open up your favorite editor as root and indeed go to "/etc/X11/xorg.config"

fill in the vert and hor sync as desribed for your specific monitor in the Monitor section and change the modes to what you want in the sreen section.

below is mine, so edit yours to match your monitor.


**********************************************************************
# Monitor section
# **********************************************************************

# Any number of monitor sections may be present

Section "Monitor"

Identifier "My Monitor"

# HorizSync is in kHz unless units are specified.
# HorizSync may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY. REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.

HorizSync 31-80

# HorizSync 30-64 # multisync
# HorizSync 31.5, 35.2 # multiple fixed sync frequencies
# HorizSync 15-25, 30-50 # multiple ranges of sync frequencies

# VertRefresh is in Hz unless units are specified.
# VertRefresh may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY. REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.

VertRefresh 56-75

EndSection




# **********************************************************************
# Screen sections
# **********************************************************************

# Any number of screen sections may be present. Each describes
# the configuration of a single screen. A single specific screen section
# may be specified from the X server command line with the "-screen"
# option.
Section "Screen"
Identifier "Screen 1"
Device "** Intel i810 (generic) [i810]"
Monitor "My Monitor"
DefaultDepth 24

Subsection "Display"
Depth 8
Modes "1280x1024" "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
Subsection "Display"
Depth 16
Modes "1280x1024" "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
Subsection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600"
ViewPort 0 0
EndSubsection
EndSection

i only found this:

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Dell E771p"
DisplaySize 300 230
HorizSync 30.0 - 70.0
VertRefresh 50.0 - 160.0
Option "dpms"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nv"
VendorName "Videocard vendor"
BoardName "NVIDIA GeForce FX (generic)"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 16
Modes "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubSection
EndSection

as you can see, it doesnt show vertsync, only HorizSync..

since a friend gave me the monitor, i have no book/manual on it. but i googled and found this:
( http://support.dell.com/support/edoc.../spec/spec.htm )

"Resolution
Horizontal scan range
30 - 70 kHz (automatic)
Vertical scan range
50 - 160 Hz (automatic)
Optimal preset resolution
1024 x 768 at 75 Hz
Highest preset resolution
1024 x 768 at 85 Hz
Highest addressable resolution*
1280 x 1024 at 60 Hz
* Addressable means the monitor will sync up to this mode. However, Dell does not guarantee the image will be sized and centered correctly.
Dell guarantees image size and centering for all preset modes listed in the following table.


so this means that i should edit my xorg.conf to something like this:


Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Dell E771p"
DisplaySize 300 230
HorizSync 30.0 - 60.0 <---------- HERE
VertRefresh 50.0 - 60.0 <---------- & HERE
Option "dpms"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nv"
VendorName "Videocard vendor"
BoardName "NVIDIA GeForce FX (generic)"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 16
Modes "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480" <---------- & HERE
EndSubSection
EndSection


please correct me if i am wrong, i have already destroyed one monitor while playing with its settings.
Doesnt want to destroy another one while making the screen look good.

i think that should be it!

but hey..... even the guy who made the monitor says " Dell does not guarantee the image will be sized and centered correctly." so no guarantees from me either,
but it shouldn't do much harm and looks like it should work.

p.s.
don't forget to wear a helmet and safety glasses

hehe.. thx man... but it didnt work.. does it matter if i run gnome or kbe?

aint there any settings for these kinda options in GUI?

you can probably edit your xorg.conf from a gui in fedora, (no clue where it is in fedora)
but in case your gui doesn't work or the gui isn't sufficient as you said, you can always edit it manually

myself i'm used to slackware, and from the shell as root type "xorgconfig" (without x running)
or edit file the with "vi /etc/X11/xorg.conf"

you might want to google a bit more to find the specifications for your monitor

okey thank you for your help