Dual Monitors - One is always in PowerSave Mode

[zhackwyatt]

I am trying to get dual monitors working in Redhat. I can get twin view working because I can drag windows off the screen and my workspace switcher shows an extra wide desktop. However, the second monitor always remains in Powersave mode.

I have a Quadro FX 1700 video card. One Dell 2009W (1680x1050) monitor (the primary one) and one Dell 1908FP (1280x1024). I also have compiz working. Any suggestions?

Thanks

[zhackwyatt]

I'm not exactly sure what the deal is, but I found another monitor that would show it with a blueish tint, and yet another that would show it orange.

[zhackwyatt]

Desktop Effects is my problem. If I do not have it enabled, dual head works fine. Anyone know how to get Desktop effects to work in dual head mode as well?

[twoHats]

I am trying to get dual monitors working in Redhat. I can get twin view working because I can drag windows off the screen and my workspace switcher shows an extra wide desktop. However, the second monitor always remains in Powersave mode.

Just read that both monitors must use same color depth- HTH

[zhackwyatt]

I discovered dual head would wor fine if I disabled desktop effects. However, I was turning things on and off, randomly, (thats usually what I do out of desperation, lol), and I got it to work. So now I have dual head and desktop effects running. I'll post the xorg.conf file if anyone is interested. (I know I'm not the only person to get this working, but yet another place where someone might find it useful isn't a bad thing.)

[twoHats]

Hey Thanks for the offer - I for one would love to see xorg.conf.

-- A fellow random trial and error person - sometimes the magic works - sometimes it doesn't.

[zhackwyatt]

This works for the Quadro FX 1700 video card, using driver version: NVIDIA-Linux-x86_64-173.14.12-pkg2 on Red Hat Enterprise Linux 64 bit. Probably work on other things as well.

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

Section "Module"
    Load           "glx"
    SubSection     "extmod"
        Option         "omit xfree86-dga"
    EndSubSection
EndSection

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

Section "InputDevice"
    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

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

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "DELL 2009W"
    HorizSync       30.0 - 83.0
    VertRefresh     56.0 - 75.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "Quadro FX 1700"
    Option         "AddARGBGLXVisuals" "True"
    Option         "RenderAccel" "True"
    Option         "AllowGLXWithComposite" "True"
    Option         "backingstore" "True"
    Option         "TripleBuffer" "True"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Videocard0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "1"
    Option         "metamodes" "DFP-0: nvidia-auto-select +0+0, DFP-1: nvidia-auto-select +1680+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

[twoHats]

Thanks for the post!