dmesg |grep powernow
[    1.132134] [Firmware Bug]: powernow-k8: No compatible ACPI _PSS objects 
found.
[    1.132134] [Firmware Bug]: powernow-k8: First, make sure Cool'N'Quiet is 
enabled in the BIOS.
[    1.132134] [Firmware Bug]: powernow-k8: If that doesn't help, try upgrading 
your BIOS.

This is what I am getting when trying to upgrade from 14.04 to 16.04. I
have been looking in many places but only found this old bug report that
is in the same area. I have tried to boot 14.10 which works fine, than
15.04 which shows the same message but jumps past it and loads Ubuntu.
So does 15.10. As soon as I try 16.04.2 The message is the last screen
that is loaded. The machine then freezes and has to be rebooted.

I hope I am not stuck with the older Ubuntu versions, since 8.04
everything just worked fine so I assume something in the ACPI polling
has changed.

I attached the output from dmidecode so that the configuration of the
machine should be complete.

Can anyone help, please?

** Attachment added: "dmidecode.txt"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/398109/+attachment/4900381/+files/dmidecode.txt

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https://bugs.launchpad.net/bugs/398109

Title:
  powernow-k8: Your BIOS does not provide ACPI _PSS objects in a way
  that Linux understands

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