The log output included in your bug report appears to show a hang in the kernel video driver; reassigning.
But also, your bug description mentions a bios virus. If your bios is compromised, it's unlikely we can do anything to fix it from Ubuntu. ** Package changed: plymouth (Ubuntu) => 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/1786192 Title: splash time out on shutdown bios virused To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1786192/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs