For 3.16 kernel, it seems that it's not affected. And for 3.19, it's 100% reproducible, BIOS upgrade to A02 [1] could make poweroff / reboot work as expected. Therefore I will close this bug.
Thanks [1] http://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverId=M6M0W ** Changed in: linux (Ubuntu) Status: Confirmed => Invalid ** No longer affects: linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1494203 Title: [Dell Latitude 3150] System hang on poweroff / reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-vivid/+bug/1494203/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
