[Bug 213501] Screen blank after sleep/resume

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213501

            Bug ID: 213501
           Summary: Screen blank after sleep/resume
           Product: Base System
           Version: 11.0-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: tobias at astrom.xyz
                CC: freebsd-amd64 at FreeBSD.org
                CC: freebsd-amd64 at FreeBSD.org

After sleep/resume LCD screen is blank. Have tried to sleep/resume from X, and
without X, same behavior. 

Was running FreeBSD 10.3 before upgrading to 11, and in 10.3 resume worked.

Is there a work around to "reset" the screen some way?

Attaching dmesg and syslog when sleeping/resuming.

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