Since there is no patch yet, I am using this work-around for my HP laptop 
(hw/sw details: see #45):
- put this in /etc/default/grub (in my setup it is only changing the default 
value of that var)
  GRUB_CMDLINE_LINUX_DEFAULT="acpi_osi=! \"acpi_osi=Windows 2015\" "
- then run this command to update the grub menu config:
  sudo update-grub2

@kaihengfeng
Any progress on the rework of the patch?

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https://bugs.launchpad.net/bugs/1912935

Title:
  battery drain while notebook off / shutdown

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