Sashibelle
Level 1
(4 points)
Desktops
Q: Monitor looks like patchwork!
My iMac is starting to occasionally flash a patchwork pattern. It has happened about once a day for the past three days now. It happened one time before about 3 months ago but never again until three days ago. I can still click into and use any open programs but I need to restart the computer to make the flashing patching work stop. Each time this happens it seems that it was triggered by using my Mission Control hot corner. I use this hot corner constantly on a daily basis but sometime this patchwork will happen right when I activate that corner.
Is this this a graphics card issue?
iMac, OS X Yosemite (10.10.5)
