XPS 9370 13" HD screen colour tone problem

Hi Perpetoom,

Thanks for the reply. I did do a factory restore which didn't resolve the problem. Night mode in Windows did cross my mind too but even with it disabled, the problem still exists.

I've checked my Intel GFX drivers and they are up to date as well.

Andrew.

Is this happening on "fresh system state" or become visible after you updated everything and installed some apps? Can you revert back to factory defaults using notebook restore feature to try it out? Maybe you got enabled "night mode" in Windows and it's causing some unexpected issues?

Try to reset system and install latest graphics drivers from Intel website.

NOTE: Got FHD version and didn't encounter (at least yet) such issue, and did not came across thread mentioning about it in context XPS 9370 here, at dell-community-forums.

I guess this is hardware issue, but you can:

• run a linux distribution from usb/sdcard to check is this is software or hardware related problem
• connect external monitor if possible to verify is your device matrix is faulty (or its drivers)
• run stress tests for GPU and CPU and observe the screen to see either is related to system load
• run stress tests for GPU and CPU and observe the screen to see either is related to temperature
• if you got a touchscreen - check that touch input cause any change in colors
• run Dell diagnostics utility (F12 at boot time and one from Support Assist)

All those things might help when contacting with Support and eventually finding the source of problem but unfortunately will not solve this issue.

Thanks for the reply again.

Out of those recommendations, I have connected an external display and can't replicate the problem on it. The problem would seem to be with the laptop's display.

I've recorded a video of this using my phone's camera. It isn't the clearest but in the video, I use a blank Paint document and fill the left side of the screen black and leave the right side white. I then toggle the right side between solid black and white. You can just about see the rest of the screen changing tone when I shift between the two colours.

https://www.youtube.com/watch?v=Lk4rm38TOpI

Well Tobias, I think you've done it! I found an option under my 9370's BIOS called "Dynamic Backlight Control" under the "Video" section. Disabling this option has so far resolved the problem.

Before doing this, I tested the page you gave me with Night Light in Windows switched on. What I thought was really odd was that when going to the white page with the Dell logo on, for a moment the page would first be white and then seem to quickly change to the orange hue that Night Light applies to the screen. None the less, with the immediate change from the first black page to the second white page, I could see the Dell logo okay, although it seemed to fade in ever so slightly.

Then I disabled Night Light and tested my display using that page. When I changed from the black page to the white page, it was first solid white and then the Dell logo slowly appeared over 5 or so seconds, confirming your suspicions.

Having disabled Dynamic Backlight Control, my problem seems to have been resolved. I've just switched Night Light back on and that looks a lot better too.

I say "seems to have been resolved" because after I did my most recent factory restore, the problem went away but yet, Dynamic Brightness Control was not disabled in the BIOS yet. I immediately put this down to some sort of odd software problem. Then when I started to reinstall all my apps, the problem returned so I thought it must be software related even more. Maybe something was being communicated back to the UEFI, I don't know.

But yes, your suggestion has resolved my problem. Thanks very much Tobias!

Andrew.

Thanks a lot! @andrewsmith86 I was planning to return the system with the assumption that something is wrong with the display. This fixed the issue for me too. I don't know why they will enable such an annoying feature.

Just wanted to add my thanks for this solution as well - was on the verge of returning an otherwise impressive machine (XPS 9380), but glad it didn't come to that! I thought it may be something specific to Ubuntu or the "Night Light" feature, never thought to look for a setting in the BIOS.

Thanks a lot, never thought about looking it up in the Bios. I wouldn't have spotted it in the Bios even if trying to troubleshoot the problem. On my XPS 13 7390 the entry is under Video disguised as "Eco Display". Who would have guessed??