| Reference | Downloads | Github

Chrome Error in Dual Monitor System

URL of experiment: Stroop, and GFMT demos in

Description of the problem: Chrome browser cannot read property ‘readPixels’ in Dual monitor setting.

“TypeError: Cannot read property ‘readPixels’ of undefined”
In Chrome browser with dual monitor + MacOS setting.
This error can be easily replicable in MacOS with dual monitor. I tested in High-Sierra, Catalina, and Mojave with Macbook Pro, iMac, and Mac Mini.

The experiment can be run in one monitor with Chrome, and even no monitor (Logged-in with Screen Sharing) Mac system.

But in dual (and triple) monitor setting, Only Safari works. Chrome always show the above error.
I think, it’s some problem between browser and MacOS display kext.