Bug#854113: linux-image-4.9.0-0.bpo.1-amd64-unsigned: ACPI Error : _SB_.ALIB and SB.PCI0.VGA.ATC0 and s,

[Alain Rpnpif]

I forgot to say that with the 4.9 kernel, I cannot power off my machine
with the poweroff command line.
Instead, the system restart.

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Alain Rpnpif