Long time mythbuntu user, first time poster.
I have been running Mythbuntu 14.04 with no problems until a few days ago when I started experiencing failures on reboots. Most boots fail after the GRUB menu, with the message that it cannot find the root drive. If I use the GRUB 2 menu on boot to choose an older kernel (3.2.0-70-generic) then it boots fine every time. But if I choose the default current kernel (3.13.0-44-generic), the boot fails "most" of the time (but, strangely, it will occasionally boot just fine.) Logs are no help. I re-generated the grub.cfg file but the problem recurred.
Does anyone have any ideas of where to start looking for the problem? Thank you for your time!