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  1. JDK
  2. JDK-8088455

[Monocle] handle screen blanking in FBDevScreen

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      We currently disable cursor blinking in the FBDevScreen constructor and re-enable it if necessary in FBDevScreen.shutdown().

      We should do the same with fb0 screen blanking. We should read the value in /sys/class/graphics/fb0/blank in the FBDevScreen constructor, then write 0 to that file. On shutdown we should restore the old value.

      If we fail to read or write the initial value we should issue a brief warning and continue.

            ddhill David Hill (Inactive)
            dblaukop Daniel Blaukopf (Inactive)
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