I had similar issues when i installed Ubuntu i tried to boot ubuntu but it got hang because of ACPI error i made acpi off so it can boot in but when i tried to shut down it got hand this time
Reason is simple Its related to your graphic card step 1: i went through these proceess ->booted into system with acpi off from grub command since i was not able to without doing so step 2: later when i got into ubuntu i did (this step neccessary or not i'm not sure, included it since i had followed it) i think its very necessary ->sudo apt-get update ->sudo apt-get upgrade step 3: Install graphic card Driver https://www.tecmint.com/things-you-mostly-need-to-do-after-installing- ubuntu-16-04/4/ after doing this once you might hang but on restart you wont need acpi off you can run ubntu without any hang during start splash screen or shutdown splash screen -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1594023 Title: Poweroff or reboot hangs. Laptop won't shutdown. 16.04 Status in linux package in Ubuntu: Confirmed Bug description: This is about a fresh Ubuntu 16.04 install on a new laptop (asus x540sa). After pressing the shutdown button in the start menu; the shutdown procedure starts and in the final splash screen the system just hangs. Tried a second time by pressing Esc once the splash screen showed up and I saw that it reaches the line "Reached target shutdown" and just stops there, no matter how long I leave it there the machine won't turn off. I also tried a Kubuntu 16.04 fresh install on the same machine and it hanged too at the final splash screen where the pulsating logo stopped. Then I tried with Esc only to see the exact same line in the end. The issue seems to affect lately quite many users as shown by the google results of the past month / week or so. I have also tried shutting down from the console with shutdown -and all the parameters after that suggested online- and sudo poweroff but unfortunately they didn't do the trick. The exact same situation occurred. Unmounting the swap as suggested online doesn't work. Also rebooting the system is not working either due to the same issue. So right now the only way for me to poweroff the machine is to press the power button on the keyboard continuously. Reproducible: Always Steps to Reproduce: 1.Install OS 2.Do something, anything or nothing 3.Try to shutdown or reboot Actual Results: The computer is not shutting down: "Reached target shutdown" and hangs there. Expected Results: Powering off the machine. For what it's worth, closing the lid won't suspend the system, but using the menu buttons for suspension will do it. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1594023/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
