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I've researched on this topic and tried all of the recommendations such as editing kernel options acpi=off, acpi=noirq, acpi=force, then sudo update-grub. I also disabled wake on lan in the BIOS. Unfortunately, nothing works.

  • /(root) is mounted to a 256 SSD
  • /home is mounted to a 1TB HDD
  • Asrock Z97 pro4 motherboard
  • Intel i7-4790k
Zanna
  • 70,465
  • Please check the below link as it was posted earlier also > http://askubuntu.com/questions/132882/why-do-i-get-a-reboot-instead-of-a-shutdown – Subir Jain Mar 01 '15 at 10:50

2 Answers2

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After reading this kernel bug report I found out that BIOS settings cause this behaviour. It says there that you should enable keyboard and mouse power on. Now the reboot on shutdown is fixed.

Zanna
  • 70,465
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You have forgot to shut down one or more programs that you had running. I have the same problem with you and i find out that the Psensor was open when i was trying to shut down my pc. When i shut down Psensor the problem was solved.