Monitors go dark when f.lux loads



  • I recently installed a new graphics card to drive my three monitor setup (see specs below). Once I did so and attached all three monitors, I successfully booted to the desktop, but when f.lux loaded - I had it set to run with Windows - all three monitors went dark, with only the cursor visible.

    Thinking that the graphics card was defective. I reinstalled the old card and attached two monitors to it and the third to my motherboard's onboard graphics, my previous setup, which my motherboard supports. Same issue.

    I experimented with various combinations of new and old graphics card and monitors, including running only two monitors through the old card, the new card, and the motherboard. All resulted in the same issue. I was only able to run one monitor successfully.

    I would like to be able to run f.lux with all monitors, and would appreciate any assistance.

    System specs:

    Win 10 Home x64
    Core i5-2400 Sandy Lake 3.1GHz
    16GB DDR3
    Asus P8b75-M motherboard
    New graphics card: Gigabyte GeForce GT 740 2GB OC Graphic Card (GV-N740D5OC-2GI REV3)
    Old graphics card: EVGA GeForce 210 Passive 1024 MB DDR3 PCI Express 2.0 DVI/HDMI/VGA Graphics Card, 01G-P3-1313-KR
    Two monitors connected via DVI, one VGA


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