A forums question http://ubuntuforums.org/showthread.php?t=2197141 indicated that the bug could be made to go away in secure boot by "putting the os I wanted to boot on on the top of the list of bootable drives". Now my UEFI Settings for devices does NOT contain OSes, just devices. When I select the hard disk on the efi menu, I get another window listing the OSes to boot. Maybe this second level of choice has something to do with the source of the bug.
A forums question http:// ubuntuforums. org/showthread. php?t=2197141 indicated that the bug could be made to go away in secure boot by "putting the os I wanted to boot on on the top of the list of bootable drives". Now my UEFI Settings for devices does NOT contain OSes, just devices. When I select the hard disk on the efi menu, I get another window listing the OSes to boot. Maybe this second level of choice has something to do with the source of the bug.