To cater for this UPDD implements a procedure to install UPDD virtual HID devices, identify the monitor metrics and configure the appropriate internal HID touchscreen / monitor association. These virtual HID interfaces also need to be correctly associated to the internal Windows touch screen\monitor mapping. To further complicate matters, under Windows, UPDD also creates a virtual HID touch device per monitor though which to pass touch data on the HID interface. The video driver will handle the display and UPDD will handle the touch. Therefore, when a touch screen monitor is connected to a system two devices will appear in the system - a touch screen and a video display. Question Monitors suddenly getting no signal.A touch screen monitor is two totally independent devices, a video display and a touchscreen, with no known relationship between the devices. Question My monitor suddenly black-screens with DisplayPort but works with HDMI ? Question ASUS monitor suddenly went black ? PC suddenly not sending any signal to monitors ? Question External monitor stopped being detected all of a sudden ? Question Monitor suddenly not recognised by Windows over DisplayPort ? Question DLDSR Resolution not available for Lenovo Legion Y27q-20 27-inch WLED Gaming Monitor Question Certain games don't detect my primary monitor in settings. Question Help me adjust my monitor settings (Darks are too dark) I have now run out of ideas of how to fix the issue. System restore to before I had the issue.Updating the driver to a digital display with the 1920x 1080 resolution (Did not override the non-PnP driver).Updating the driver to be the manufacturers driver for the monitor (But for both the PnP and Non-PnP they just retain being what they were before).Updating the driver to be a Generic PnP driver (But the monitor is still showing as non-PnP).Uninstalling the "Generic Non-PnP" driver.Switching the cables on the backs of the monitors.Switching the HDMI port on the back of the graphics card for the two monitors.Updating my graphics drivers (Both to the latest recommended gaming and studio drivers).Sometimes I am able to get the non-working monitor to change resolution to 1920x1080 after reinstalling the drivers many times(though it still shows as a DVI Digital Display monitor in Nvidia control panel), but then after a PC restart the settings are lost all over again. One of the monitors works fine still, but last night the other monitor switched from being a normal "Generic PnP" monitor to a "Generic Non-PnP" monitor ? I have two ET.LU50D.006 monitors from Acer plugged into an Nvidia Geforce GTX 1060 3Gb graphics card.
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