I have done a fresh Ubuntu 16.04 install and then I have installaed the
mainline kernel suggested, i.e. 4.6.0-040600rc6-generic.
I have tested all day long the machine and it seems there is no random
monitor shut-down anymore, nor "[drm:intel_cpu_fifo_underrun_irq_handler
[i915]] *ERROR*" in the kernel log.
It seems this problem has somehow been fixed.
Will update in case of new problems.
Thanks for your help.
** Tags added: kernel-fixed-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1573120
Title:
VGA monitor goes to sleep randomly in 16.04
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