Calibration no longer working

[Koxta]

Hello,

I have recently installed the 1903 update which appears to be causing issues with calibration. I have read the sticky thread and applied the fixes but to no avail. To summarize, DisplayCAL profile loader doesn’t appear to have any effect on the display anymore (using 3.8.7.1). The loader does say the calibration has been applied but the colors/calibration is clearly not changing.

Here’s the DisplayCAL-apply-profiles.log file:

2019-10-20 22:44:36,476 ================================================================================
2019-10-20 22:44:36,476 DisplayCAL-apply-profiles.exe 3.8.7.1 2019-10-01T20:57:22.163Z
2019-10-20 22:44:36,480 Windows 10 Pro Version 1903 Build 18362.418 x86_64
2019-10-20 22:44:36,480 Python 2.7.16 (v2.7.16:413a49145e, Mar  4 2019, 01:30:55) [MSC v.1500 32 bit (Intel)]
2019-10-20 22:44:36,480 CA file C:\Program Files (x86)\DisplayCAL\cacert.pem
2019-10-20 22:44:36,490 Faulthandler 3.2
2019-10-20 22:44:37,141 wxPython 4.0.6 msw (phoenix) wxWidgets 3.0.5
2019-10-20 22:44:37,141 Encoding: cp437
2019-10-20 22:44:37,141 File system encoding: mbcs
2019-10-20 22:44:37,141 Loading C:\Users\Koxta\AppData\Roaming\DisplayCAL\DisplayCAL.ini
2019-10-20 22:44:37,141 Loading C:\Users\Koxta\AppData\Roaming\DisplayCAL\DisplayCAL-apply-profiles.ini
2019-10-20 22:44:37,851 Imported existing <module 'comtypes.gen' from 'C:\Program Files (x86)\DisplayCAL\lib\library.zip\comtypes\gen\__init__.pyc'>
2019-10-20 22:44:37,855 Using writeable comtypes cache directory: 'c:\users\koxta\appdata\local\temp\comtypes_cache\DisplayCAL-apply-profiles-27'
2019-10-20 22:44:37,990 INFO: Scheduled task "\Microsoft\Windows\WindowsColorSystem\Calibration Loader" has already been disabled.
2019-10-20 22:44:37,990 SUCCESS: The parameters of scheduled task "\Microsoft\Windows\WindowsColorSystem\Calibration Loader" have been changed.
2019-10-20 22:44:37,990 Installing SIGINT handler
2019-10-20 22:44:38,030 Setting up scripting host at 127.0.0.1:15411
2019-10-20 22:44:38,030 C:\Program Files (x86)\DisplayCAL\lib\library.zip\DisplayCAL\profile_loader.py:2061: Warning: Registry access failed: [Windows Error 5] Access is denied: SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration
2019-10-20 22:44:38,030 Display configuration change detection took 0.000000 ms
2019-10-20 22:44:38,030 --------------------------------------------------------------------------------
2019-10-20 22:44:38,030 Enumerating display adapters and devices:
2019-10-20 22:44:38,030
2019-10-20 22:44:38,342 Buggy video driver detected: NVIDIA GeForce GTX 1070 Ti. Gamma ramp hack activated.
2019-10-20 22:44:38,411 NVIDIA GeForce GTX 1070 Ti
2019-10-20 22:44:38,427   |- 1. Dell S2716DG @ 0, 0, 2560x1440 [PRIMARY]
2019-10-20 22:44:38,480 Caching implicit linear gamma ramps for profile DELL S2716DG Color Profile,D6500 (S2716DG.icm)
2019-10-20 22:44:38,480 Loading calibration curves of current display device profile...
2019-10-20 22:44:38,480 1. Dell S2716DG @ 0, 0, 2560x1440 (Primary): DELL S2716DG Color Profile,D6500 (S2716DG.icm)
2019-10-20 22:44:38,480 ...ok.
2019-10-20 22:46:34,355 Received query to end session
2019-10-20 22:46:34,355 Can veto
2019-10-20 22:46:34,355 Trying to close main top-level application window...
2019-10-20 22:46:34,355 Executing ProfileLoader.exit(<wx._core.CloseEvent object at 0x0579FD00>)
2019-10-20 22:46:34,404 Main top-level application window processed close event
2019-10-20 22:46:34,404 Executing BaseApp.OnExit()
2019-10-20 22:46:34,405 Running application exit handlers
2019-10-20 22:46:34,405 Shutting down profile loader
2019-10-20 22:46:34,407 Display configuration monitoring thread finished
2019-10-20 22:46:34,444 Waiting for thread ScriptingHost.ConnectionHandler to exit
2019-10-20 22:46:34,516 ScriptingHost.ConnectionHandler exited
2019-10-20 22:46:34,529 Exiting DisplayCAL-apply-profiles
2019-10-20 22:46:34,529 Ran application exit handlers
2019-10-20 22:47:12,394 ================================================================================
2019-10-20 22:47:12,457 DisplayCAL-apply-profiles.exe 3.8.7.1 2019-10-01T20:57:22.163Z
2019-10-20 22:47:12,598 Windows 10 Pro Version 1903 Build 18362.418 x86_64
2019-10-20 22:47:12,598 Python 2.7.16 (v2.7.16:413a49145e, Mar  4 2019, 01:30:55) [MSC v.1500 32 bit (Intel)]
2019-10-20 22:47:12,598 CA file C:\Program Files (x86)\DisplayCAL\cacert.pem
2019-10-20 22:47:12,644 Faulthandler 3.2
2019-10-20 22:47:14,066 wxPython 4.0.6 msw (phoenix) wxWidgets 3.0.5
2019-10-20 22:47:14,066 Encoding: cp437
2019-10-20 22:47:14,066 File system encoding: mbcs
2019-10-20 22:47:14,066 Loading C:\Users\Koxta\AppData\Roaming\DisplayCAL\DisplayCAL.ini
2019-10-20 22:47:14,066 Loading C:\Users\Koxta\AppData\Roaming\DisplayCAL\DisplayCAL-apply-profiles.ini
2019-10-20 22:47:14,926 Imported existing <module 'comtypes.gen' from 'C:\Program Files (x86)\DisplayCAL\lib\library.zip\comtypes\gen\__init__.pyc'>
2019-10-20 22:47:14,926 Using writeable comtypes cache directory: 'c:\users\koxta\appdata\local\temp\comtypes_cache\DisplayCAL-apply-profiles-27'
2019-10-20 22:47:15,082 INFO: Scheduled task "\Microsoft\Windows\WindowsColorSystem\Calibration Loader" has already been disabled.
2019-10-20 22:47:15,082 SUCCESS: The parameters of scheduled task "\Microsoft\Windows\WindowsColorSystem\Calibration Loader" have been changed.
2019-10-20 22:47:15,082 Installing SIGINT handler
2019-10-20 22:47:15,128 Setting up scripting host at 127.0.0.1:15411
2019-10-20 22:47:15,128 C:\Program Files (x86)\DisplayCAL\lib\library.zip\DisplayCAL\profile_loader.py:2061: Warning: Registry access failed: [Windows Error 5] Access is denied: SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration
2019-10-20 22:47:15,128 Display configuration change detection took 0.000000 ms
2019-10-20 22:47:15,144 --------------------------------------------------------------------------------
2019-10-20 22:47:15,144 Enumerating display adapters and devices:
2019-10-20 22:47:15,144
2019-10-20 22:47:15,410 Buggy video driver detected: NVIDIA GeForce GTX 1070 Ti. Gamma ramp hack activated.
2019-10-20 22:47:15,487 NVIDIA GeForce GTX 1070 Ti
2019-10-20 22:47:15,503   |- 1. Dell S2716DG @ 0, 0, 2560x1440 [PRIMARY]
2019-10-20 22:47:15,565 Caching implicit linear gamma ramps for profile DELL S2716DG Color Profile,D6500 (S2716DG.icm)
2019-10-20 22:47:15,582 Loading calibration curves of current display device profile...
2019-10-20 22:47:15,612 1. Dell S2716DG @ 0, 0, 2560x1440 (Primary): DELL S2716DG Color Profile,D6500 (S2716DG.icm)
2019-10-20 22:47:15,644 ...ok.
2019-10-20 22:48:03,121 SysTrayIcon.OnCommand(hwnd=66400, msg=273, wparam=101, lparam=0)
2019-10-20 22:48:04,117 Menu command:
2019-10-20 22:48:04,381 Set calibration state to reset vcgt
2019-10-20 22:48:05,930 Acquired lock
2019-10-20 22:48:06,213 Releasing lock
2019-10-20 22:48:06,252 Caching linear gamma ramps
2019-10-20 22:48:06,279 Resetting video card gamma table to linear...
2019-10-20 22:48:06,279 1. Dell S2716DG @ 0, 0, 2560x1440 (Primary)
2019-10-20 22:48:06,280 ...ok.
2019-10-20 22:48:12,292 SysTrayIcon.OnCommand(hwnd=66400, msg=273, wparam=164, lparam=0)
2019-10-20 22:48:12,293 Menu command:
2019-10-20 22:48:12,293 Set calibration state to reset vcgt
2019-10-20 22:48:12,293 Acquired lock
2019-10-20 22:48:12,293 Releasing lock
2019-10-20 22:48:12,348 Resetting video card gamma table to linear...
2019-10-20 22:48:12,348 1. Dell S2716DG @ 0, 0, 2560x1440 (Primary)
2019-10-20 22:48:12,351 ...ok.
2019-10-20 22:48:14,332 SysTrayIcon.OnCommand(hwnd=66400, msg=273, wparam=184, lparam=0)
2019-10-20 22:48:14,332 Menu command:
2019-10-20 22:48:14,332 Set calibration state to load profile vcgt
2019-10-20 22:48:14,332 Acquired lock
2019-10-20 22:48:14,332 Releasing lock
2019-10-20 22:48:14,374 Loading calibration curves of current display device profile...
2019-10-20 22:48:14,374 1. Dell S2716DG @ 0, 0, 2560x1440 (Primary): DELL S2716DG Color Profile,D6500 (S2716DG.icm)
2019-10-20 22:48:14,375 ...ok.
2019-10-20 22:49:18,032 Detected DisplayCAL. Calibration loading disabled.
2019-10-20 22:55:35,575 SysTrayIcon.OnCommand(hwnd=66400, msg=273, wparam=210, lparam=0)
2019-10-20 22:55:44,648 No longer detecting DisplayCAL. Calibration loading enabled.
2019-10-20 22:55:46,430 SysTrayIcon.OnCommand(hwnd=66400, msg=273, wparam=248, lparam=0)
2019-10-20 22:55:46,430 Menu command:
2019-10-20 22:55:46,430 Set calibration state to reset vcgt
2019-10-20 22:55:46,430 Acquired lock
2019-10-20 22:55:46,430 Releasing lock
2019-10-20 22:55:46,467 Resetting video card gamma table to linear...
2019-10-20 22:55:46,467 1. Dell S2716DG @ 0, 0, 2560x1440 (Primary)
2019-10-20 22:55:46,469 ...ok.
2019-10-20 22:55:50,078 SysTrayIcon.OnCommand(hwnd=66400, msg=273, wparam=268, lparam=0)
2019-10-20 22:55:50,078 Menu command:
2019-10-20 22:55:50,078 Set calibration state to load profile vcgt
2019-10-20 22:55:50,078 Acquired lock
2019-10-20 22:55:50,078 Releasing lock
2019-10-20 22:55:50,114 Loading calibration curves of current display device profile...
2019-10-20 22:55:50,114 1. Dell S2716DG @ 0, 0, 2560x1440 (Primary): DELL S2716DG Color Profile,D6500 (S2716DG.icm)
2019-10-20 22:55:50,115 ...ok.

Any ideas?

[Florian Höch]

Hi,

does the profile which is associated to the display (S2716DG.icm) even contain calibration? It looks (from the name) like a “default”/vendor supplied profile, not one that is based on actual display measurements.

Edit: It doesn’t.

2019-10-20 22:47:15,565 Caching implicit linear gamma ramps for profile DELL S2716DG Color Profile,D6500 (S2716DG.icm)

• This reply was modified 4 years, 7 months ago by Florian Höch.

[Koxta]

You’re right. It looks like the update has wiped out the calibration created with DisplayCAL. I had to install it again with DisplayCAL at which point the Profile Loader picked it up and everything is fine now.

Thank you, this thread can be closed.

[Author]

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