Some time ago I bought a graphic card GeForce GTX 580 to improve the performance of some CGI rendering I've been doing. I've already had another GPU - GeForce GTX 560 and an internal GPU on my i7-3770K CPU. I've never used the internal one. The monitor was always plugged to the DVI-D socket of the GTX560 and since I've got the GTX580 I connected the monitor to it.
The problem and symptoms
Recently I decided to install Ubuntu as my second system (next to the Windows 10) on a different drive. That's when I noticed that I can't access BIOS to change the boot priority. I investigated the problem for a long time mostly blaming the Windows for it's fastboot features. The symptoms are like this:
- I turn on the computer.
- The LED on the monitor stays orange for a few seconds (5-10). During that time the screen stays black (turned off).
- Then the LED turns blue and the Windows lock screen appears.
- When I try to press DEL during the boot the LED stays orange and never turns blue. The screen never turns on. The Windows lock screen never appears.
I'm not sure when this had started to happen because I didn't need to access BIOS for a long time. But I'm sure it haven't been happening before because I used the GTX560 since I have this PC and I'm sure I accessed BIOS once or twice.
What I eventually discovered, is that when I plug the monitor to the internal GPU (on-board) everything works fine - the motherboard splash screen appears and when I press DEL the BIOS appears. That leads me to a conclusion that the external GPU doesn't work during the boot. It turns on when the system loads the proper drivers.
What can I do to fix this? Now, when I have two systems I need to see the GRUB boot menu to choose the system (either Windows or Ubuntu).