Chrome Version: 61.0.3136.5 (Official Build) dev (64-bit)
OS: 9672.0.0 (Official Build) dev-channel chell

What steps will reproduce the problem?
(1) Start up device

What is the expected result?
Display is on.

What happens instead?
Instead the display is flickering off once per second for about a tenth of a second.

Things were working okay in Beta (M-60)

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For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.