Refresh Rate - Latitude D630 - nVidia NVS 135M

**EvilNemesis** · September 3rd, 2008

Basic information first:

Version: Ubuntu 8.04 Hardy Heron
Kernel: 2.6.24-19-generic
System: Dell Latitude D630 / nVidia Quadro NVS 135M
I am running the proprietary drivers that Ubuntu offers.

I am already impressed with how quickly Ubuntu recognized my hardware. However, I am noticing some sluggishness when switching / moving between different windows. I checked the display properties (System > Preferences > Screen Resolution) and I see the following:

Resolution: 1440x900
Refresh Rate: 50 Hz

I know that the LCD on the Latitude D630 normally runs at 60 Hz and I believe this may be the cause to the performance issues. My question is, how do I modify the xorg.conf to allow for 60 Hz. Currently the display properties will not let me go any higher/lower.

Thank you in advance! Here is my current xorg.conf:

Code:

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   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"
	Option		"CorePointer"
EndSection

Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"	"true"
	Option		"Device"	"/dev/psaux"
	Option		"Protocol"	"auto-dev"
	Option		"HorizEdgeScroll"	"0"
EndSection

Section "Device"
	Identifier	"Configured Video Device"
	Driver		"nvidia"
	Option		"NoLogo"	"True"
EndSection

Section "Monitor"
	Identifier	"Configured Monitor"
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Monitor		"Configured Monitor"
	Device		"Configured Video Device"
	Defaultdepth	24
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
  screen "Default Screen"
	Inputdevice	"Synaptics Touchpad"
EndSection
Section "Module"
	Load		"glx"
EndSection

**falcon61102** · September 3rd, 2008

Have you attempted to adjust your settings using:

Code:

gksudo nvidia-settings

That will give you a graphical interface that lets you configure many of the settings for your card, including your refresh rate.

**EvilNemesis** · September 3rd, 2008

It doesn't look like I have that option.

Code:

user@system:~$ nvidia-
nvidia-bug-report.sh  nvidia-xconfig

I am using the Nvidia drivers but I don't see a way to load nvidia-settings.

**EvilNemesis** · September 3rd, 2008

I went ahead and downloaded the nvidia-settings module. The settings I was looking for are listed here. I made my changes and generated a new xorg.conf. However, after restarting X the default Display Properties still show a refresh rate of 50. Not sure if that is accurate or not.

Is there any command that will spit back your current resolution / refresh rate?

Here is my new xorg.conf:

Code:

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 1.0  (buildd@vernadsky)  Thu Jun  5 09:26:53 UTC 2008

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "ServerLayout"
    Identifier     "Default Layout"
    Screen      0  "Screen0" 0 0
    InputDevice    "Synaptics Touchpad"
EndSection

Section "Module"
    Load           "glx"
EndSection

Section "ServerFlags"
    Option         "Xinerama" "0"
EndSection

Section "InputDevice"
    Identifier     "Generic Keyboard"
    Driver         "kbd"
    Option         "XkbRules" "xorg"
    Option         "XkbModel" "pc105"
    Option         "XkbLayout" "us"
EndSection

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

Section "InputDevice"
    Identifier     "Synaptics Touchpad"
    Driver         "synaptics"
    Option         "SendCoreEvents" "true"
    Option         "Device" "/dev/psaux"
    Option         "Protocol" "auto-dev"
    Option         "HorizEdgeScroll" "0"
EndSection

Section "Monitor"
    Identifier     "Configured Monitor"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "LPL"
    HorizSync       30.0 - 75.0
    VertRefresh     60.0
EndSection

Section "Device"
    Identifier     "Configured Video Device"
    Driver         "nvidia"
    Option         "NoLogo" "True"
EndSection

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "Quadro NVS 135M"
EndSection

Section "Screen"
    Identifier     "Default Screen"
    Device         "Configured Video Device"
    Monitor        "Configured Monitor"
    DefaultDepth    24
    Option         "metamodes" "CRT: 1440x900_60_0 +0+0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Videocard0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "1440x900_60 +0+0"
EndSection

**falcon61102** · September 3rd, 2008

Is your screen resolution correct? By the looks of you xorg.conf, the current mode is 1440x900 with a refresh rate of 60hz.

Another thing you can try is:

Code:

gksudo displayconfig-gtk

This will allow you to configure your display devices including your monitor. If you look at your xorg.conf you'll see that your display shows up as unknown so it's reverting back to the most default setup. Here you can install the correct display and then you should be able to set your refresh rate higher.