Thanks everyone for their input.
I am going to try to escalate this Inspiron 13-7373, Dell DBC (Dynamic Brightness Control) complaint.
To do so, send me a private message with the following information =
Inspiron 13-7373 service tag number
Your full name
Your shipping address
Your phone number
Thanks for your patience.
That fact that this terrible "feature" is still making it's way to Dell laptops is ridiculous. This was fixed a while back on the XPS line after many, many customer complaints with a bios update that allowed it to be turned off. Why can't we get that on our machines?
Open Device manager<Monitors<Right Click on Generic PnP Monitor and choose Update Driver < Browse my computer for Driver software<Let me pick from a list of device drivers on my computer<Choose Generic Pnp Monitor
Open Device manager<Display adapter<Right Click on Intel Hd graphics and choose Update Driver < Browse my computer for Driver software<Let me pick from a list of device drivers on my computer<Choose Microsoft basic display adapter.
Change your display resolution to default
I'm having the same problem. It seems like there is no way to disable this annoying function. No BIOS option, no driver setting, no power option, etc.
Rob PM'd me a couple registry tweaks that based on the key names, sounds like it only affects playing video. They didn't solve the issue. He also said that it is working as designed. I don't know about you all, but regardless of the design, this is something anyone should have the ability to turn on or off at their discretion. I don't understand the lack of support to disable this feature...
I have updated to the new 1.9.1 bios update, it seems like the dynamic contrast is gone? Can anyone else confirm?
Edit: still does it on battery, but not when plugged in.
The Dynamic Brightness Control option can be disabled in the latest BIOS for Inspiron 7373. Just update the BIOS to 1.10, then go to BIOS, go to the video section and there you'll find the Dynamic Brightness Control option. Disable it! It'll work just fine.