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changeisabsolut
18 Posts
1
167560
July 30th, 2015 15:00
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 Before, using Dell's outdated driver in lieu of a more recent one from Intel brought back the brightness control functionality.
Dell has released their drivers (already outdated) for this laptop for Windows 10, and it is listed as being supported for Windows 10.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?
DELL-Ravi Ch
Moderator
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7112 Posts
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Posted July 30th, 2015 19:00
HI changeisabsolute,
I would suggest you to install the video card driver from Dell website as these drivers are tested on the Dell system. Please follow the steps mentioned below to uninstall the video card.
- Click on Start button.
- In the search box type devmgmt.msc and then press enter.
- Select the Display adapters listed and right click on it.
- Now select properties.
- In the properties window, under Driver tab, click on Uninstall button.
- Check “Delete the driver software for this device.”
- You want to delete the driver click OK.
After the uninstall finishes restart the system. Then reinstall the Intel video card driver first and then NVidia /AMD card driver (If system is configured with discrete video card) on the system for issue resolution. Please enter your service tag # on the link below, select the OS, then download the video card drivers from Video section onto the system and install it.
Please let me know if this helps.
DELL-Ravi Ch
Moderator
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7112 Posts
34909
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Posted August 1st, 2015 20:00
HI changeisabsolute,
Sometimes due to drivers corruption you will tend to face this issue. I would suggest you to follow the previous steps provided by me to completely remove corrupted drivers and then install the latest available drivers on Dell support site.
DELL-Ravi Ch
Moderator
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7112 Posts
34909
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Posted August 4th, 2015 10:00
Hi,
I would suggest you to check for Intel driver from Intel website by running Intel driver utility on the system using the link below and install the video card drivers recommended for your system.
Please let me know if this helps.
changeisabsolut
18 Posts
34909
0
Posted July 30th, 2015 19:00
That's what I'm using and there is still no brightness control. Is there a way to escalate this issue?
changeisabsolut
18 Posts
34909
0
Posted August 1st, 2015 21:00
Yeah, no, thus isn't the issue. Nice try at a phony answer ;-) Like I said before, this needs to be escalated.
Will Vaughan
6 Posts
34909
0
Posted August 2nd, 2015 14:00
I am having the same issue with my L421x XPS Ultrabook. Windows 10 video drivers provided by Dell and Microsoft eliminate brightness adjustments. I've deleted and reinstalled drivers as you've suggested (through the device manager) and the problem persists. There is clearly a problem with the driver code.
changeisabsolut
18 Posts
34909
0
Posted August 2nd, 2015 15:00
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.
JohnRoss2113
4 Posts
40612
4
Posted 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