Screenshot attached, it looks perfectly normal.
But there was no actual picture on the monitor when PtrScr was pressed, only
backlight and same random color on all pixels.
Next actions bring screen to normal:
a. If lid was closed when starting session:
Open lid, wait ~3 second, picture appears and both monitors are fine.
If lid closed now, both screens goes off but external one re-appears after
keyboard or mouse activity or lid opening.
b. If screen was opened when starting session:
Close lid, wait ~3 second, both screens goes off but external one
re-appears after keyboard or mouse activity or lid opening.
** Attachment added: "Screenshot from 2012-04-24 22:36:10.jpg"
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/977334/+attachment/3102452/+files/Screenshot%20from%202012-04-24%2022%3A36%3A10.jpg
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https://bugs.launchpad.net/bugs/977334
Title:
external screen is filled with random color when primary screen is off
during logon on MacBook Air4,1
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