Thanks for your response, Christopher.
I updated my BIOS to the latest version available:
JBET48WW (1.13 )
04/20/2015
Unfortunately, nothing has changed. The system still behaves like in the
initial post of this report.
** Changed in: xorg (Ubuntu)
Status: Incomplete => New
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https://bugs.launchpad.net/bugs/1454160
Title:
External monitor is disabled after resume (only on 15.04)
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