Both putting cpu offline and putting it back to online works on my Panda board with latest 1208.12 natty kernel.
http://pastebin.ubuntu.com/599657/ ** Changed in: linux-ti-omap4 (Ubuntu) Milestone: None => maverick-updates ** Changed in: linux-ti-omap4 (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707003 Title: Kernel panic when trying to offline CPU1 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs