Dell xps 13 9360 brightness randomly adjust

Had a Dell XPS 13 9360 which brightness randomly will become darker.. saw the below 2 links and not sure if that would resolve the issue.. as the solution seems like not confirmed.
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JohnBusiness Consultant (Owner)Commented:
A more or less standard fix for this is to update BIOS, update Chipset and then update the Video Driver. Do all of these, shut down, start up and test.
RaminTechnical AdvisorCommented:
This link has a verified answer.  But I suggest to create a restore Point before starting.
A lot of laptops have adaptive brightness now.  That 2nd reddit link of yours should lead you to the correct answer too.
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grnowAuthor Commented:
thanks for the suggestion, user called DELL support for assistance and some steps on bios given however issue still not yet resolved.. will see if any further updates as laptop currently overseas
JohnBusiness Consultant (Owner)Commented:
If Dell cannot fix it then there may be a hardware problem requiring service
grnowAuthor Commented:
User is still following up with dell on the issue, to revert later
From the DELL link that Ramin provided and basically mentioned in your 2nd Reddit link:

There is no "issue".

The Dell XPS 13 9360 ships with a design feature called "content-adaptive brightness control" (CABC). This feature will change the brightness of the screen depending on the content that is rendered on the screen.

A number of customers do not like this design feature (me included, by the way). As a result, Dell have made available a tool which allows turning off / turning on of CABC ( ). This tool is _only_ available for systems with the QHD display, as, apparently, the tool reconfigures the screen panel firmware.

For the record: personally, I am very happy with CABC turned off on my QHD display. I am also very happy that there is no dynamic brightness control (reacting to environment brightness) is implemented either.

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