Adaptie Background Light
Issue: DELL XPS 13 9370 Adaptie Background Light - Changing light
Link: https://www.dell.com/community/XPS/XPS-9370-13-quot-HD-screen-colour-tone-problem/td-p/6032522
Resolve: 9370's BIOS called "Dynamic Backlight Control" under the "Video" section. Disabling this option has so far resolved the problem.
Testing: http://tylerwatt12.com/dc/
I have not yet bought an XPS 9370 for me, since I'm still observing bug reports, to be finally sure to buy the right device for me.
Anyhow, I read some reports, which might describe and mention how to solve your issue. There is a "feature" which dynamically adjusts the screen brightness, depending on the content. In previous models, there was no option to deactivate that, but the 9370 should have that option within Bios. Check for something like deactivate CABC (Content Aware Brightness Control).
If your observed behavoir is related to that, can be checked here:
Best regards, Tobias
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