Surface Pro 12inch slim pen 2 leaving dots on screen after i lift my pen

Hi Benjamin,

Thanks for the additional information. The fact that the Slim Pen 2 does not work in UEFI is important, but it does not necessarily mean that the pen or touchscreen is defective.

Also, not seeing “HID-compliant touch screen” in Device Manager can be normal on some newer Surface models. The touch/digitizer components may appear under different Surface/Intel/Qualcomm HID entries, so I would not recommend manually adding a device or disabling a random HID device.

Since your problem occurs mainly when your palm is resting on the screen while using SketchBook Pro or other drawing applications, I would first check these:

Confirm whether normal touch works

Touch the screen with your finger.

Check whether taps, scrolling and gestures work normally.

Check the pen in Windows

Open Settings → Bluetooth & devices → Pen & Windows Ink.

Make sure the Slim Pen 2 is detected and connected.

If possible, test the pen in OneNote or Microsoft Whiteboard, rather than only SketchBook Pro.

Check whether the problem follows the palm

Open a simple drawing application.

Place your palm on the screen without moving the pen.

Then draw with the pen.

Note whether the palm produces unwanted marks/taps or whether the pen itself loses tracking.

Do not uninstall a Windows cumulative update yet.

Since this is a brand-new Surface and the problem occurs across multiple drawing applications, it is better to establish whether this is a Windows/driver issue or a digitizer/pen issue first.

Regarding UEFI: the Slim Pen 2 is not expected to provide the same Windows pen functionality inside UEFI as it does in Windows. Therefore, the fact that it does not work there by itself isn't sufficient to diagnose a hardware failure.

If you can provide the exact Surface model and the Windows version/build (Win + R → winver), we can identify the correct pen/touch drivers and firmware for that particular Surface rather than making changes to generic HID devices.

If the pen works normally in Windows applications but palm rejection fails consistently across several drawing applications, that points us toward the Windows/Surface palm-rejection or touch/pen software stack, rather than immediately concluding that the pen hardware is faulty.