Comment 54 for bug 439784

I just encountered this bug today on Ubuntu 11.04 (64 bits if that matters).
My computer froze and after reboot, got this error. Ubuntu seems to boot but apparently the X server cannot start.

I can still boot using the failsafe option in grub, but after making the changes to recreate grubenv, every time I reboot something writes over grubenv and it has a size of 0 ...
My version of grub is 1.99~rc1-13ubuntu3.