I had this problem on a old thinkpad using Mepis 6.5 and solved in KDE Control panel, login manager, then shutdown tab. then change /sbin/halt to /sbin/poweroff hope this works for some of you.
-- PC does not power down after shutdown or hibernate https://bugs.launchpad.net/bugs/104868 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs