I have a similar problem. When I suspend from command line, after resuming from 
sleep state,
the screen is blank.
When I suspend from gnome, and resume from it, the screen flickers.
Please check my bug report: 
https://bugs.launchpad.net/ubuntu/+bug/tft-flickering
Thank you!

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[savage] unsuspending ends up with a (nearly) blank screen
https://bugs.launchpad.net/bugs/42556
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