I have a desktop with dual monitors. It has been working fine for a little while.
Then this morning, I booted up and there is no signal from either of them. No signal during BIOS, no signal during GRUB. No signal at all.
I can hear the BIOS beep, and then grub beeps, too. I couldn't tell you if I get to the Ubuntu login screen because I don't have a sound assigned to that event.
Any clues or advice would be much appreciated. I can't change almost any settings though, because I never get a monitor signal.
Possible culprits? I would think "maybe one of the cables came loose" except that wouldn't explain why both monitors go black simultaneously at start-up. Last night both monitors were working by the time we got to the Ubuntu login screen.
I've had this problem once before, but it cleared up after a day or two.
Possible culprits: nVidia driver? (can that affect the BIOS?) xorg config file (can that affect the BIOS?). I built this computer myself... do I need to more firmly plug in my video card? Since I have a motherboard video card as well as one I installed, I wonder if plugging one monitor into the motherboard will help anything....
Even if you don't have any advice, please answer my questions about how the video file and monitor settings affect the BIOS!
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