Hi Po-Hsu Lin, Can you test BIOS A09 ? Although it fixes similar issue on Win8.1, it's worth a try.
http://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverId=WCTF4 - Fixed system auto wake on after shutdown on Win8.1. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1339452 Title: [Dell Inspiron 7537] System reboots itself after powered off To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1339452/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs