Article 5C0MZ Screen trouble on IMac. Elementary OS (Ubuntu) - screen flickering, greyish

Screen trouble on IMac. Elementary OS (Ubuntu) - screen flickering, greyish

by
Auguste_Dupin
from LinuxQuestions.org on (#5C0MZ)
Hi everyone,

I am having trouble with Linux Elementary OS which I have installed on an iMac.

It works just fine until I am away for an hour and it goes into sleep mode. After I log in again the screen is all grey and flickers. Kind of like how it is when there is a warning message in the foreground the rest gets greyed out in the background. I can use it normally and everything works - it is just that it is hard to see things and there is no colors but shades of grey.

I took a screenshot to give you an impression, however it looks normal on the screenshot. Thus, I believe it is a hardware problem.

Anyone else has experienced this issue?latest?d=yIl2AUoC8zA latest?i=4sVHJMpVkVc:59MYUAvj8KU:F7zBnMy latest?i=4sVHJMpVkVc:59MYUAvj8KU:V_sGLiP latest?d=qj6IDK7rITs latest?i=4sVHJMpVkVc:59MYUAvj8KU:gIN9vFw4sVHJMpVkVc
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