Question about Dell OptiPlex GX280 PC Desktop

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Dual monitor, Intel 82915G & nVidia RIVA TNT2 64, FC6, Dell Gx520

I want to setup dual monitor for the Dell Optiplex Gx520 computer.
The motherboard has an Intel Corporation 82915G Integrated Graphics
Then I add an nVidia Corporation NV5M64 RIVA TNT2 Model 64/Model 64 Pro video card.
The dual monitor work on Windows 2000 with the Intel chip as the
primary screen and the nVidia chip as the secondary screen.
Therefore no problem with the hw.

However, dual monitor does not work on the Fedora core 6 (I cannot use FC10).
The nVidia chip is working but the Intel chip do not work (moving the
mouse do not go to that monitor and no image is displayed on the

I configure dual monitor by using the "System, Display, Setting" menu
and clicking the "dual head" checkbox, then restart X server.
/etc/X11/xorg.conf is as follows:
# Xorg configuration created by system-config-display
# Xorg configuration created by system-config-display

Section "ServerLayout"
Identifier "Multihead layout"
Screen 0 "Screen0" LeftOf "Screen1"
Screen 1 "Screen1" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
Option "Xinerama" "off"
Option "Clone" "on"

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"

Section "Monitor"

### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
Identifier "Monitor0"
ModelName "DELL E176FP (autoconfigured)"
### Comment all HorizSync and VertSync values to use DDC:
HorizSync 31.0 - 80.0
VertRefresh 56.0 - 75.0
Option "dpms"

Section "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "LCD Panel 1280x1024"
### Comment all HorizSync and VertSync values to use DDC:
HorizSync 31.5 - 67.0
VertRefresh 50.0 - 75.0
Option "dpms"

Section "Device"
Identifier "Videocard0"
Driver "nv"

Section "Device"
Identifier "Videocard1"
Driver "i810"
VendorName "Videocard Vendor"
BoardName "Intel Corporation 82945G/GZ Integrated Graphics Controller"
BusID "PCI:0:2:0"
Screen 1

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024" "1280x960" "1280x800" "1152x864" "1024x768" "800x600" "640x480"

Section "Screen"
Identifier "Screen1"
Device "Videocard1"
Monitor "Monitor1"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024"

Posted by on

  • wong_powah Jan 12, 2009

    I followed all the 7 steps of
    how and why to install i686 kernel on Fedora Core / Linux
    At step 6, I installed the dependencies removed earlier. i.e. it is NOT
    yum install compiz gnome-volume-manager systemtap gnome-session pcmciautils

    After reboot, I see Windows only as a boot option, I do not see FC6 as a boot option, so I cannot boot to FC6.



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  • 55 Answers

Here is a little guide for setting up dual monitors with fedora core 6:

I haven't had to use duals monitors with Linux yet but if this doesn't work let me know and I'll run some tests as I can easily set this up at work (we use the same computers and similar cards).

Posted on Jan 12, 2009

  • Shawn McGuire
    Shawn McGuire Jan 12, 2009

    If you use the Fedora Live CD you can then edit the grub.conf file. Here is what it should look like:
    # grub.conf generated by anaconda


    # Note that you do not have to rerun grub after making changes to this file

    # NOTICE: You have a /boot partition. This means that

    # all kernel and initrd paths are relative to /boot/, eg.

    # root (hd0,0)

    # kernel /vmlinuzversion

    ro root=/dev/VolGroup00/LogVol00

    # initrd /initrdversion.







    title Fedora Core (


    root (hd0,0)

    kernel /vmlinuz2.6.181.2849.

    fc6 ro root=/dev/VolGroup00/LogVol00

    initrd /initrd2.6.181.2849.


    title Fedora Core (


    root (hd0,0)

    kernel /xen.gz2.6.181.2849.


    module /vmlinuz2.6.181.2849.

    fc6xen ro root=/dev/VolGroup00/LogVol00

    module /initrd2.6.181.2849.


    title Fedora Core (


    root (hd0,0)

    kernel /xen.gz2.6.181.2798.


    module /vmlinuz2.6.181.2798.

    fc6xen ro root=/dev/VolGroup00/LogVol00

    module /initrd2.6.181.2798.


    title WinXP

    root (hd0,1)

    chainloader +1

    If you need more go to:

    for a complete guide.

  • Shawn McGuire
    Shawn McGuire Jan 12, 2009

    Almost forgot to tell you to substitute the sda with hda



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Im wondering if I can put th processor from my 518 in my GX280

With the flood of information you posted I can barely sift through it

Do I assume you are referring to a Dell Inspiron 518 desktop computer's, processor; to go into a Dell Optiplex GX280 desktop computer?

You know Dell is a computer company that was founded on the principle, to give the customer what they wanted; and to be able to choose from several options.

That being stated, in reality I have no idea of what Processor is in YOUR Dell Inspiron 518, or Optiplex GX280.

However, if I am to assume the specs (Specifications), shown in the following link to be true; for Your computer, then the answer is NO,

States an Intel Quad Core Q6600 processor.
(Operates at a maximum frequency rate {'Speed'} of 2.4GigaHertz.
2.4GHz )

Now let's look at the Dell Optiplex GX280 specifications,

Both the Inspiron 518, and the Optiplex GX280 use an LGA 775 processor socket, on the motherboard.

This is good because both the Intel Quad Core Q6600, and the Intel Pentium 4, model 540; use the LGA 775 processor socket,

What is Not good, is the motherboard chipset used on the Optiplex GX280, will Not support a dual core processor; much less a quad core processor.

The motherboard chipset for the Optiplex GX280 is an Intel 915G,

The Intel 915G chipset supports Single Core processors -> ONLY.
Intel Pentium 4, or Intel Celeron D.

Front Side Bus (FSB) support is either 533MegaHertz, or 800MHz.

The Intel Celeron D is NOT a dual core processor,

"The Intel Celeron D processor works with the Intel 845 and 865 chipset families.

The D suffix actually has no official designation, and does not indicate that these models are dual-core.

It is used simply to distinguish this line of Celeron from the previous, lower performing Northwood and Willamette series, and also from the mobile series, the Celeron M (which also uses 3xx model numbers).
Unlike the Pentium D the Celeron D is NOT a dual core processor."

The Inspiron 518 has an Intel G33 motherboard chipset,

Scroll down to G33 in the left column.
Read across, and look at the headings above.

Here we see the Intel G33 motherboard chipset, supports dual core, and quad core processors.
Intel Pentium Dual Core, Intel Core 2 Duo, and Intel Core 2 Quad.

Front Side Bus (FSB) support is for processors, that have either an 800MegaHertz FSB, or 1066MHz FSB, or 1333MHz FSB.

Short answer?

If it is a dual core, or quad core Intel processor, the answer is NO.

Do you know how to find out what processor is in the Inspiron 518, and the Optiplex GX280?

1) Are the computers working, and internet ready?


2) Do you know about Anti-Static Procedures, and how to read the sSpec number on the processor?

Post back in a Comment.


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Or go through this page and see.
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I own a Dell Optiplex GX520 with P4 processor and am looking to upgrade the processor to dual core or Pentium D. Which will be best compatible fit? My machine was manufactured in 2005, would there be a...

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The GX520 does support the Pentium D, but it depends on what motherboard is in your system as some do and some don't. By entering the service tag of the computer you should be able to determine whether your motherboard is compatible.

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I use the same card in one of my machines with no issues at all. It is used to drive a 50" sony lcd.

All I can suggest based on my experience of this card is to remove the drivers and install the latest ones

I have always Nvidia cards to work better at dual display especially in DUALVIEW where you can set individual resolutions so easily.

Check that it is not somthing else holding down your boot times.

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