Answers (N/A if not applicable)
Provide a detailed description of the issue
When the HDMI and VGA ports on the Nvidia card occupied, the VGA port connecting to the discrete Intel graphics doesn't seem to work at all (from boot and from plugging it in while the computer is on).
Does it fail every single time, or only sometimes?
I've tried reproducing it 10-15 times and it has failed in all cases, so yes.
Brand and Model of the system.
Hybrid or switchable graphics system?
System has an i7-3770 and a Geforce GT 620
Make and model of any Displays that are used to see the issue (see note2 below).
All three are 1920x1080 and EFPs. I'm pretty sure they all have a 60Hz refresh rate.
How much memory [RAM] in the system (see note2 below).
16 GB (15.9 usable)
Provide any other hardware needed to replicate the issue.
The various cables and monitors seem to work on a separate laptop that I have, so it doesn't seem to be some other component failing.
Hardware Stepping (see note1 below).
Operating System version (see note2 below).
Windows 10 Build 10240
VBIOS (video BIOS) version. This can be found in “information page” of CUI (right click on Desktop and select “Graphics Properties”.
I am a failure and cannot find this.
Graphics Driver version; for both integrated Intel and 3rd party vendors (see note2 below).
For Intel: 10.18.10.4276
For Nvidia: 10.18.13.5850
SW or Apps version used to replicate the issue.
Single display, clone, or extended (see note2 below).
Extended on two displays (with one main dispaly)
Display resolution & refresh rate setting of each display (see note2 below).
Same as 3rd hardware question
AC or DC mode, i.e. is power cable plugged in or not?
Cables are plugged in and the various monitors and cables work on a 2nd system
How to repro
Please provide steps to replicate the issue. These steps are very crucial to finding the root cause and fix.
I did, accidentally, find a work around. If I unplug everything (with the computer off), and plug in only the HDMI display to the discrete graphics and turn on the computer, the other displays can be added successfully. Any other configuration (like only having a VGA connection on the discrete graphics) doesn't seem to work. Interestingly enough, attempting to come out of hibernation with the workaround results in the computer turning on, then quickly shutting off, then restarting with the one monitor on Intel graphics not working -- resulting in the initial problem manifesting again.