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Old 01-29-2005, 10:29 PM   #1
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Registered: Jan 2005
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Angry Two video cards, dual head not working

Hi everyone, I'm a newbie (I guess that's obvious since I'm posting to this forum) and I have a little problem. I'd like to have a dual head system, but I don't want to buy any more hardware. Here's the deal:

I have a Geforce 3 TI 200 that I use as my primary display (and after installing the nvidia drivers using the binary from nvidia's site and the sh command it looks BEAUTIFUL), but while this card has a VGA and a DVI output it is not capable (according to nvidia) of running two displays at once. That's OK, because I have another nvidia card that's PCI, a geforce 2 mx 200. I'm using FC3, with the 2.6.10-1.741_FC3smp kernel, xorg, and grub. My mobo, if that's important in this particular situation, is an intel D865PERL (I know, but I'm going to replace it soon with an ABIT IS-7).

My Problem? No matter how hard I try, I can't get the second card to display ANYTHING. It won't even wake up the monitor, and I know the monitor works 'cause I tried it with the other card. I've tried all kinds of different xorg.conf configurations, and I always get one of two results: either X refuses to launch and I have to reconfigure, or I get just my normal desktop. It LOOKS like it should be simple when you go into the system video configuration from the application menu, but I assure you it doesn't work that way.

Now, here's the interesting part. I don't need to drag between desktops. I'm the kind of guy who has a set side of the screen I like things on. Play on one monitor, work on the other. I want to run TWO separate instances of X, one on each monitor, and I know that's possible I just don't know how.

One final note, even though EVERYTHING display wise seems to work on my primay card, I don't get the NVIDIA splash screen that was mentioned when I was setting up my drivers. I didn't think much of it at the time since everything else worked, but now I wonder if that's part of the problem...

I'll post some outputs next that might be helpful.
Old 01-29-2005, 10:34 PM   #2
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My outputs


00:00.0 Host bridge: Intel Corp. 82865G/PE/P DRAM Controller/Host-Hub Interface (rev 02)
00:01.0 PCI bridge: Intel Corp. 82865G/PE/P PCI to AGP Controller (rev 02)
00:1d.0 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #3 (rev 02)
00:1d.3 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev c2)
00:1f.0 ISA bridge: Intel Corp. 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (re v 02)
00:1f.1 IDE interface: Intel Corp. 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 0 2)
00:1f.2 IDE interface: Intel Corp. 82801EB (ICH5) SATA Controller (rev 02)
00:1f.3 SMBus: Intel Corp. 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
00:1f.5 Multimedia audio controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) AC'97 A udio Controller (rev 02)
01:00.0 VGA compatible controller: nVidia Corporation NV20 [GeForce3 Ti 200] (re v a3)
02:01.0 VGA compatible controller: nVidia Corporation NV11DDR [GeForce2 MX 100 D DR/200 DDR] (rev b2)
02:04.0 Ethernet controller: D-Link System Inc RTL8139 Ethernet (rev 10)


# Xorg configuration created by system-config-display

Section "ServerLayout"
Identifier "single head configuration"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"

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"

Section "Module"
Load "dbe"
Load "extmod"
Load "fbdevhw"
Load "glx"
Load "record"
Load "freetype"
Load "type1"

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"

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "yes"

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "CM625"
DisplaySize 370 280
HorizSync 30.0 - 95.0
VertRefresh 50.0 - 160.0
Option "dpms"

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "Videocard vendor"
BoardName "NVIDIA GeForce 3 (generic)"

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

Section "DRI"
Group 0
Mode 0666

This is the xorg file that works. Lately, everytime I've tried to edit it for dual head, my X server won't start.

Keep in mind that while I'm somewhat adept at finding things, my level of experience is very low. If anyone is nice enough to reply to this, please try and "spell it out" as much as possible, that would really help me along.

Old 02-01-2005, 11:29 PM   #3
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An interesting addition

My motherboard has a setting (as most do, i believe) to initialize a display first. I can choose AGP or PCI. I have a video card in each, and when I was playing with this setting, some interesting things happened.

1. My display switched over to the other card, which I expected, and after X configuration everything worked great, so I know it's not the card.
2. Kudzu had me configure the PCI card as a new device when I switched the "init display first" to PCI. Not only that, but when I switched it back it had me configure the AGP card. This tells me that it's having trouble seeing both at the same time, and that even though lspci and the hardware browser both think the PCI card is there when the AGP card is displaying, the system doesn't "really" know it's there. Any suggestions?


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