NO BRIGHTNESS CONTROL

Question

No brightness control in Windows 10 on XPS 14 (L421X, Mid 2012). Had this same problem in Windows 8/8.1. Before, using Dell's outdated driver in lieu of a more recent one from Intel brought back the brightness control functionality.

Dell has released their drivers (already outdated) for this laptop for Windows 10, and it is listed as being supported for Windows 10. Is there any chance we can get some working drivers?

JohnRoss2113 · Accepted Answer

Intel HD Graphics 4000 and Windows 10 & Windows 8.1   ( Brightness fix with latest driver)       Brightness Fix with Driver Date 8/17/2015 )       Brightness problem Solved   Intel HD Graphics 4000 with NVIDIA® GeForce® GT650M graphics.   Install:   Intel HD Graphics 4000 Driver,     Driver Date: 8/17/2015   Driver Version: 10.18.10.4276   Make sure you backup your registry first before proceeding!!!!   open regedit  in  Run Command   Registry has wrong value:   Currently reads as :   [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000] 'FeatureTestControl'=                                                                             'Edit DWORD 32 bit'=       f000   Registry with New Value:   You needed to change the value in registry to:  (   f008   )   [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000] 'FeatureTestControl'=                                                                            'Edit DWORD 32 bit'=        f008   Then Restart Computer   Brightness Fixed with Latest driver.   Let me know if this was helpful to you

changeisabsolut · Answer

Yeah, no, thus isn't the issue. Nice try at a phony answer ;-) Like I said before, this needs to be escalated.

changeisabsolut · Answer

Aaaand.... Even if the Dell drivers worked, Windows Home instantly reinstalls theirs automatically even if you use the Hide Update Tool. Best resolution is to downgrade to Windows 8.1 and use Dell supplied drivers from years ago since they will never fully support this laptop.

pejot · Answer

I'm getting: No drivers where detected for you product. On drivers for 8.1 getting error message: Drivers stop working when i turn on my xps.

Zize · Answer

I installed the windows 8.1 drivers, too. After the next Windows update, the new drivers were back and brightness controll didn't work any more. But if you go to device manager, "graphics" (i don't know the exact english term), you find your graphic boards. Right click, "update driver", "search on computer", "choose from a list". There you will find the new driver and the old Windows 8.1 driver. Doubleclick the old driver and done.

At my XPS14 everything works fine, even updates do not change anything. Brightness controll(with the old intel driver) and games (with the old nvida driver) work fine. One little problem still exists: the driver crashes when display turns off and on. But that's no big deal.

To the Dell support: I really hope you deliver the necessary windows 10 drivers for xps devices. I think this is mandatory to keep customers. XPSs are expensive Laptops and if the new Windows does not work any more, i surely won't by expensive Laptops any more.

PS: My old Stduio15 laptop works perfectly fine with the drivers provided by Windows. So why the trouble with XPS?!

Yukon Brat · Answer

1. Go to DISPLAY SETTINGS (right click on the desktop) 2. Switch off 'adjust screen brightness automatically'

krabago · Answer

Just chiming in to help boost the importance of this topic. I too am having this exact problem with my XPS 15 (L521X, Mid 2012) that also uses the Intel HD 4000 even after this laptop was recently confirmed by Dell as being upgradeable to Windows 10. Only the older Windows 8.1 driver allows the brightness control to work.

changeisabsolut · Answer

It's not going to happen asap, or at all. This has been an issue for 2 years, and they have done nothing. Dell's viewpoint is that you should buy a new laptop.

ZMass · Answer

This is my first Dell. Figured it was a high end laptop and would come with better support.

Dell reports this laptop is Windows 10 ready. And it is, if you don't mind BSOD crashes and no brightness control due to faulty display drivers. Fortunately windows 10 is not a requirement for me. I'll go back to 8.1, which *** but at least this laptop works with it. Definitely think twice before buying a Dell again however.

dekromm · Answer

Hi Ravi,

I'm afaraid the method you proposed doesn't work for me either.
Can you tell us if there's any chance for us owners of this laptop to have a new driver released in which the video driver will work fine, with the brightness control too, please?
Thank you in advance

Guido

chall3ng3r · Answer

A big THANK YOU to @JohnRoss2113 for posting this fix. I've been stuck with low brightness on my XPS L421X for many months because Dell and Intel don't wanna fix the issue.

I just revisited this thread to see if there's some update, and glad I did.

I just tried out your registry hack after getting latest Intel HD4000 driver update from Windows Update. It worked flawlessly after applying the registry hack and restart.

I hope Dell's engineers are looking in these forums, and make this hack official in their drivers page.

Thank you again.

// chall3ng3r //

Locked Topics – Laptops General

NO BRIGHTNESS CONTROL

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