This post is more than 5 years old
18 Posts
1
166900
NO BRIGHTNESS CONTROL
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 Before, using Dell's outdated driver in lieu of a more recent one from Intel brought back the brightness control functionality.
Dell has released their drivers (already outdated) for this laptop for Windows 10, and it is listed as being supported for Windows 10.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?
changeisabsolut
18 Posts
0
August 15th, 2015 14:00
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
1 Message
0
September 18th, 2015 12:00
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
1 Message
0
September 22nd, 2015 14:00
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
JohnRoss2113
4 Posts
0
December 7th, 2015 14:00
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
jrreyn02@outlook.com
chall3ng3r
4 Posts
1
January 15th, 2016 10:00
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 //