Microsoft has confirmed a new bug affecting PCs running Windows 10 version 2004, causing the external display to go black when users draw within Office applications . The new display bug, spotted by Bleeping Computer, has not been added to the Windows “health dashboard.” However, Microsoft has published an advisory detailing the issue that occurs on the external display when a user uses any application that supports drawing.
Specifically, Microsoft pointed out that if you have a device running Windows 10 version 2004 with a built-in display (such as a laptop or tablet) and a connected external display that is set to mirror your primary display, you may see both displays flicker and the external display go black when you try to draw using an Office app, such as Word. This can also happen with some other apps used for drawing, such as Whiteboard. If you check in Device Manager, your graphics controller will have a warning icon next to it (a yellow triangle with an exclamation point in it). The good news is that you can reset an external display after restarting the device. However, the bad news is that Microsoft has not offered a timeframe for a possible fix for this bug. Microsoft has confirmed that this is an issue in Windows 10 version 2004 and is working to resolve the issue in a future version of the operating system. The external display issue adds to the list of issues discovered since Microsoft released Windows 10 version 2004. Shortly after the release of Windows 10 version 2004, Microsoft confirmed several driver, despite spending an additional six months testing the new version before its release. Microsoft has still blocked Windows 10 2004 from being installed on its own devices , although Tero Alhonen reported on Monday that his Surface Pro 4 had received the update.
Lenovo has also documented issues that owners of various ThinkPad devices may encounter when upgrading to Windows 10 2004. These problems range from BSODs for the ThinkPad P70 to a yellow warning sign appearing on the drive in Device Manager on other ThinkPad models, an issue that Lenovo describes as an “operating system limitation.” In some cases, Lenovo suggests workarounds, but the company also provides dates by which the issues should be resolved.
