Microsoft launched KB4501375 for Windows 10 version 1903 lately to repair quite a lot of points. One of the fastened points affected calibration loaders and functions just like the popular F.Lux program that make use of the SetDeviceGammaRamp API.
The changelog confirms that Microsoft fastened the issue in KB4501375:
Addresses an issue which will trigger Night mild, Color Management profiles, or gamma correction to cease working after shutting down a tool.
It seems, nonetheless, that Microsoft introduces a brand new bug that causes banding on gradients even when calibration just isn’t energetic. Any program or recreation that masses an ICC profile could also be affected by the issue.
The issue is that extreme that Eizo published a assist web page on the corporate web site by which it recommends to keep away from PCs put in with Windows 10 version 1903 on the time.
The firm notes that tones will not be displayed accurately, and that the issue impacts all screens and all graphics boards.
We extremely advocate not utilizing a PC put in with Microsoft Windows 10 (1903) in the interim, particularly for diagnostic imaging or graphics enhancing which requires tone accuracy.
Windows 10 version 1903 customers could have a look at gradients, e.g. on this monitor test page, to search out out if they’re affected by the issue. The gradient must be clean; a tool is affected by the bug if stripes are noticeable while you have a look at the gradient.
A workaround has been printed, e.g. on the DisplayCal forum, that means to disable the Calibration Loader process within the Windows Task Scheduler.
- Open the Start menu, sort Task Scheduler, and choose the merchandise from the listing of search outcomes to open the Task Scheduler.
- Navigate to Microsoft > Windows > WindowsColorSystem
- Double-click on the Calibration Loader process.
- Switch to the Triggers tab.
- Double-click on “At log on.
- Remove the checkmark from “Enabled”.
- Repeat the method for “On connection to person session” to disable the set off as nicely.
- Log out and again on once more.
Note that it’s required to make the change once more if the related profile is modified.
Microsoft launched the final version of Windows 10 version 1903 on the finish of May 2019 to the general public.
Now You: are you impacted by the issue?