Additional registry key for latest win version

[francodgstn]

Hi,

I have a Surface Pro (2017) with Windows 10.0.19042 and since couple of win updates the fix doesn't work anymore for me.

I found this article which suggests some additional registry key and it worked for me.
I just applied them all so I cannot really say which one did the trick.

Source: Disable adaptive contrast/brightness on new UWD/DCH drivers

Windows Registry Editor Version 5.00
;Disable DPST on Intel UWD/DCH drivers - dancharblog
;
; -----Instructions: -----
;- copy this text into notepad
;- save as DPST-off.reg
;- double-click the file and follow the prompts to import changes
;- reboot
;- if the changes don't do anything, in the line below that starts with "[HKEY_" change "\0001" to "\0000" or "\0002" and retry the above steps
; ------------------------
;
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001]
"ACUserPreferencePolicy"=dword:09020000
"DCUserPreferencePolicy"=dword:09020000
"DisplayFeatureControl"=dword:000003e3
"Dpst6_3ApplyExtraDimming"=dword:00000000
"FeatureTestControl"=dword:00008200
"PowerAcPolicy"=dword:c1bac1ba
"PowerDcPolicy"=dword:c9bac0b8
"PowerDpstAggressivenessLevel"=dword:00000001
"PowerGpsAggressivenessLevel"=dword:00000001
"PowerPlanAwareFeatureSettings"=hex:ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,02,01,02,00,00,00,02,01,02,00,02,01,02,01,02,00,02,01,02,01,02,00,02,01,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,06,00,00,00,04,00,00,00,00,01,00,00,06,00,00,00,04,00,00,00,00,01,00,00,06,00,00,00,01,00,00,00,00,01,00,00,06,00,00,00,04,00,00,00,00,01,00,00,06,00,00,00,04,00,00,00,00,01,00,00,06,00,00,00,04,00,00,00,00,01,00,00,06,00,00,00,04,00,00,00,00,01,00,00,06,00,00,00,04,00,00,00,00,01,00,00,06,00,00,00,04,00,00,00,00,01,00,00,06,00,00,00,04,00,00,00,00,01,00,00,06,00,00,00,04,00,00,00,00,01,00,00,06,00,00,00,04,00,00,00,00,01,00,00