Need to fix my screen refresh rate.

[Mayhem]

Hi guys, I don't know why but few days ago Ubuntu couldn't recognize my screen anymore so I had to edit my xorg.conf file to add the correct resolution and refresh rate.

My problem is that I cannot get the proper refresh rate for my screen resolution. I have a Samsung SyncMaster 730B running at 1280x1024 @75 Hz.

I want a refresh rate of 75 Hz but I can only get to 51 Hz so far. I don't know what I did wrong but if go to a resolution of like 1024x768 I can get 59 Hz, if I choose a resolution of 640x512 I can get to 72 Hz and so on. So if anyone know how to fix this so I can run my screen at 1280x1024 @75 Hz I would be happy.


here's my xorg.conf


# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by failsafeDexconf, using
# values from the debconf database and some overrides to use vesa mode.
#
# You should use dexconf or another such tool for creating a "real" xorg.conf
# For example:
# sudo dpkg-reconfigure -phigh xserver-xorg
Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
EndSection

Section "Device"
Identifier "Configured Video Device"
Boardname "vesa"
Busid "PCI:1:0:0"
Driver "nvidia"
Screen 0
Option "NoLogo" "True"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
Vendorname "Plug 'n' Play"
Modelname "Plug 'n' Play"
# 1280x1024 @ 75.00 Hz (GTF) hsync: 70.50 kHz; pclk: 136.49 MHz
Modeline "1280x1024_75.00" 81.80 1024 1080 1192 1360 768 769 772 802 -HSync +Vsync

Gamma 1.0
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Configured Video Device"
Monitor "Configured Monitor"
Defaultdepth 24
Option "metamodes" "1280x1024_75 +0+0"
SubSection "Display"
Depth 24
Virtual 1280 1024
Modes "1280x1024_75.00"

EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
screen 0 "Default Screen" 0 0
EndSection
Section "Module"
Load "glx"
Load "v4l"
EndSection
Section "device" #
Identifier "device1"
Boardname "vesa"
Busid "PCI:1:0:0"
Driver "vesa"
Screen 1
EndSection
Section "screen" #
Identifier "screen1"
Device "device1"
Defaultdepth 24
Monitor "monitor1"
EndSection
Section "monitor" #
Identifier "monitor1"
Gamma 1.0
EndSection
Section "ServerFlags"
EndSection

[Zohso]

Yeah, same here. It shows up as an extremely low refresh rate - 51. This can't be true as a refresh rate this low would cause your screen to appear to flicker. (it's always flickering, but it'd be more noticeable at 51)

One thing I did notice, however, is that if you open up your nVidia X-server and look at your settings there they appear to be correct.

Through Gnome, my settings show up as 1280x1024 @ 51hz; but in nVidia x-server they say 1280x1024 @ 85hz.

This has got to be a bug. Or something that i'm missing entirely.

Help, anyone?

[Zohso]

Yeah, same here. It shows up as an extremely low refresh rate - 51. This can't be true as a refresh rate this low would cause your screen to appear to flicker. (it's always flickering, but it'd be more noticeable at 51)

One thing I did notice, however, is that if you open up your nVidia X-server and look at your settings there they appear to be correct.

Through Gnome, my settings show up as 1280x1024 @ 51hz; but in nVidia x-server they say 1280x1024 @ 85hz.

This has got to be a bug. Or something that i'm missing entirely.

Help, anyone?

[dmizer]

If you are using an LCD monitor (flat screen), refresh rate doesn't really do much. More information here: http://en.wikipedia.org/wiki/Refresh_rate#Liquid_crystal_displays