Kamvas Pro 12 glitching (Straight lines, not registering pen sometimes)


This issue suddenly happened in the middle of drawing with no prompt as far as I can tell, it just randomly broke.

List of things I've tried:


1. Unplugging everything and replugging it all in

2. Unchecking windows ink

3. uninstalling the driver and reinstalling it

4. restarting my computer

5. changing the pen nib

6. plugging the USB and HDMI cables into a different port

7. Disabling touch

8. Test it on another device (the problem persists)

I'm lead to believe this could be an issue with the Cable/Cord or the Pen, however I'm not entirely sure, so any help would be appreciated.

  • Hi Hannah Greene, May I know what the operating system of your computer is, Mac or Windows. I will send you the steps of performing QC test accordingly. 

    Best Regards,

    HUION Customer Support


  • Windows

  • Hi Hannah Greene, Thank you for your confirmation. Kindly follow the steps below:

    1. Please exit from the Huion tablet driver and don't open the said driver. You can do this by right-clicking the Huion Tablet driver icon from the lower-right corner of your screen and clicking "Exit";
    2. Install the Huion TabletQC tool which you can download from this link: Huion TabletQC Test
    3. Check if the parameters on the left-hand side appear on the QC software. If you don't see the parameters, please unplug and plug your tablet back in until the parameters appear, or reopen the QC software again if needed.
    4. Draw on the QC software. You can choose from the Menu at the top using your mouse to have pen pressure or use different colors as you draw.
    5. Try pressing the pen's buttons and the express keys on the tablet (if your tablet has press keys). Test the touch bar or slider if your tablet has it, and/or use your pen to test your tablet's soft keys (if your tablet has it) and check if the parameters change as well.
    6. Using a phone or other external camera devices, take a video as you perform all of the above-mentioned steps and send it to us (we recommend you send the video through WeTransfer or upload it to Dropbox or Google Drive and please grant permission to anyone who has a link to view it). Please don't use screen recording; it is important that we can clearly see both the tablet and the display screen as you perform the test. Please refer to the screenshot below on what to observe and what to do in the TabletQC software.


  • Hi Hannah Greene, We assume there is an issue with the pen and have created a ticket for you, please kindly check and reply to us by email.

    Best Regards,

    HUION Customer Support

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