Adding to the above #4, when I start the system, and before logging into ubuntu 18.04 LTS with my username and password. I opened up the console view (tty4). While shutdown down from there and reboot also works fine. I recieve no messages of cpu worker stuck as described above. I think its some other service which hangs the cpu workers(cpu resource deadlock) which starts after logging into the system for the first time. Since its a new laptop I have not installed apps or services to start with init.d and also I have put no triggers for /etc/rc* bluetooth/screen settings.
After this I tried installing nvidia drivers for gtx 1050 ti from nvidia site run file I downloaded and it gave an error for nouveau kernel driver. So I turned it off by nvidia's installer helper for this and updated ramfs and did a reboot. No issues for me now, for shutdown/reboot or random system hang after successfully running nvidia graphics. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1774531 Title: [Dell Inspiron 7577] shutdown/reboot hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1774531/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs