The same bug applies to the new Dell Precision R5400 (rack mountable workstation). The "fix" with 'reboot=b' also works with the R5400 - thanks for the tip Andy.
dmidecode for the R5400 is attached. ** Attachment added: "dmidecode-Dell-R5400" http://launchpadlibrarian.net/18282918/dmidecode-Dell-R5400 -- Reboot freezes Dell Precision WorkStation 490 https://bugs.launchpad.net/bugs/253114 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs