To whom is may concern. I found the workaround for this.

The trick is to set the boot kernel parameter "pcie_aspm=off" in
'/etc/default/grub'

Like this:

GRUB_CMDLINE_LINUX_DEFAULT="splash pcie_aspm=off"

After that run;

update-grub


pcie_aspm is some sort of power management thingie which probably puts my 
networkcontroller to sleep or something.
And putting a usb memory stick in the laptop some how wakes it up.

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https://bugs.launchpad.net/bugs/1930754

Title:
  e1000e extremly slow

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