Display numbers of dual monitors are off by one

potato 0 Reputation points
2024-04-16T11:11:26.3+00:00

I'm using Windows 10 and ControlMyMonitor tool to control my dual monitors. However, the display numbers seem to be off by one. Despite identifying the monitors correctly in Windows settings, the tool is identifying them incorrectly by adding one to their display numbers so that ".\DISPLAY1\Monitor0" bacome ".\DISPLAY2\Monitor0" and ".\DISPLAY2\Monitor0" became ".\DISPLAY3\Monitor0".

I want to fix this because I'm using command line of ControlMyMonitor and don't want to change my code not only because it's cumbersome, but also I'm gonna use this code in other computer also.

I have tried reconnecting the monitors and deleting the Configuration and Connectivity registry in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers folder, but the problem persists. How can I fix this issue without changing my code?

The following image shows each device number goes wrong.KakaoTalk_20240415_212123132

Windows
Windows
A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.
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  1. Ian Xue (Shanghai Wicresoft Co., Ltd.) 29,891 Reputation points Microsoft Vendor
    2024-04-18T04:56:48.3333333+00:00

    Hi potato,

    Thanks for your post. From you description, I understand that ControlMyMonitor tool shows wrong different display numbers. Before moving on, please understand that ControlMyMonitor tool is a third-party software, if there is any potential bug, please contact the ControlMyMonitor developer at first.

    Also, I found some article that might be related to this issue, just for your reference and hope it helpful.

    Switch your monitor inputs like a pro | My Blog - Musings of a Software Developer from Norwich (cmjchrisjones.dev)

    Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

    Best Regards,

    Ian Xue

    If the Answer is helpful, please click "Accept Answer" and upvote it.

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