• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Feature Suggestion: Disable HDCP

hans_glans

New Member
Joined
Jun 8, 2021
Messages
14 (0.08/day)
Timecard found some improvements with disabling HDCP like this (scroll down and click Findings and Analysis):


I use the tool on a regular basis and the msi mode feature was already a time saver!
Would you consider adding this to the tweak section too?
 

W1zzard

Administrator
Staff member
Joined
May 14, 2004
Messages
23,251 (3.63/day)
Processor Core i7-8700K
Memory 32 GB
Video Card(s) RTX 3080
Display(s) 30" 2560x1600 + 19" 1280x1024
Software Windows 10 64-bit
note to self

Code:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0002]
"RMHdcpKeyglobZero"=dword:00000001

improvements
Which improvements?
 

hans_glans

New Member
Joined
Jun 8, 2021
Messages
14 (0.08/day)
Many users reported improved "responsiveness" and I measured this myself:
In depth measuring would require more testers and tests with xperf. Maybe something you can catalyse by adding it as an experimental feature.

Another users report:
1623187972421.png


This does not have to be universal:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0002
For me it's
[...]\{4d36e968-e325-11ce-bfc1-08002be10318}\0000
for example
 
Last edited:

W1zzard

Administrator
Staff member
Joined
May 14, 2004
Messages
23,251 (3.63/day)
Processor Core i7-8700K
Memory 32 GB
Video Card(s) RTX 3080
Display(s) 30" 2560x1600 + 19" 1280x1024
Software Windows 10 64-bit
Does this build achieve what you need?
 

Attachments

  • NVCleanstall.exe
    3.4 MB · Views: 187

hans_glans

New Member
Joined
Jun 8, 2021
Messages
14 (0.08/day)
Yes, works for me! Did you account for possibly different regkeys for other users?
 

poppe

New Member
Joined
Sep 21, 2021
Messages
1 (0.01/day)
Maybe it's a known issue but this feature doesn't seem to work with the DCH drivers. At least NVCP still said my computer was HDCP-capable, now I'm on the standard driver and it works fine.
 

W1zzard

Administrator
Staff member
Joined
May 14, 2004
Messages
23,251 (3.63/day)
Processor Core i7-8700K
Memory 32 GB
Video Card(s) RTX 3080
Display(s) 30" 2560x1600 + 19" 1280x1024
Software Windows 10 64-bit
How interesting, I wasn't aware of that. Strange that there's a difference between DCH and non-DCH
 

usama sattar

New Member
Joined
Nov 17, 2021
Messages
1 (0.09/day)
For me, I installed the latest version of DCH driver using NVCleanstall-1.12.0 and HDCP has been disabled.
GPU: Gtx 960
OS: Windows 11 22000.318


HDCP disable.png
 

hans_glans

New Member
Joined
Jun 8, 2021
Messages
14 (0.08/day)
Yep, it worked as expected for me in the past too with the DCH drivers.
 
Joined
Nov 18, 2010
Messages
5,624 (1.40/day)
Location
Rīga, Latvia
System Name HELLSTAR
Processor AMD RYZEN 5950X
Motherboard ASUS Strix X570-E
Cooling Custom Loop. Two 360ies + 280 rad. 8x Nidec Servo Gentle Typhoons. EK-Quantum Momentum monoblock.
Memory 4x8GB Corsair Vengeance LPX 3000MHz 15-15-15-36 CR1[16-18-18-32-50;TRFC560@3200MHz]]
Video Card(s) ASUS 1080 Ti FE + water block
Storage Optane 900P + Samsung PM981 NVMe 1TB + 750 EVO 500GB
Display(s) Philips PHL BDM3270 + Acer XV242Y
Case Phanteks Enthoo Evolv ATX Tempered Glass
Audio Device(s) Sound Blaster ZxR
Power Supply Fractal Design Newton R3 1000W
Mouse Razer Basilisk
Keyboard Razer BlackWidow V3 - Yellow Switch
Software Windows 11 insider
Nice tip.

The thing that frustrates me more is that Geforce 7900 GS picture in settings... what's more frustrating, that I remember it still or the fact it control panel is a slow legacy mess.
 
Top