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Acer T232 Touchscreen and MacOs Sierra

On a late 2012 27" iMac and Acer T232HL monitor connected via thunderbolt to HDMI:

Prior to the Sierra update I just installed, I had touchscreen capabilities working acceptably well on this external monitor for the simple tasks I need to perform (mostly touching onscreen buttons).   I just upgraded to Sierra and am having a major issue: whenever I touch the screen, several buttons are selected, as if a was holding down "shift" and selecting an area. 

I tried rebooting, and searching for any sort of setup tools on the monitor or the Mac, but with no luck.

Anyone having similar issues?  Is there a way to adjust/calibrate?  Or do I need to report a bug?

Thanks,

Brad

Hi, were you able to solve this issue? I am having the same issue

最后更新：2017-08-19 11:30:17

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