Virtual DMD disabled
What it means
The DMD simply goes missing with zero error message — easy to blame on B2S or a video driver before anyone checks this one checkbox.
Why it happens
Cab owners report that a Freezy dmd-extensions update can reset the virtual DMD's 'enabled' setting to false on its own during an upgrade, independent of what was configured before.
How Pincab Toolbox detects it
dmddevice.ini's virtualdmd section is disabled, and no hardware DMD driver section is enabled either.
Automatic repair
Repair, included in the Pincab Toolbox licence, can fix this one for you. Your files are backed up first, and the fix can be undone.
Check your own pincab
Pincab Toolbox is a free Windows scanner for Visual Pinball X and PinUP Popper. It finds and explains problems like this one. No account, no telemetry.
Download for freeCovered: Visual Pinball X (10.x) and PinUP Popper. Not covered: Future Pinball, Pinball FX, Visual Pinball 9 and the other frontends (PinballX, PinballY).