Comment 40 for bug 1734147

On Tue, Nov 28, 2017 at 08:57:08PM -0000, Alexis Rico wrote:
> @Mathieu Trudel-Lapierre Yes, I have two issues:

> 1) BIOS Doesn't work fine. Same problem as @bruno USB Boot doesn't work,
> DVD boot doesn't work and saving bios settings are lost of exit and
> save. No white screen just the changes don't persist across reboots.

> 2) The hard drive failed leaving system non-bootable.

> Today I've also tried installing the OS on a new drive and a different
> computer, booting through PXE to a Ubuntu Live CD and trying to insert a
> new entry for the new os through efibootmgr.

> So far I've learnt that efibootmgr is unable to create a new entry as it
> errors No such File. And deleting the old EFI entries seems to work but
> when rebooting to bios the old EFI entries are still there.

All of this appears to point to a firmware implementation that does not
conform to the EFI standard. If Ubuntu is doing something "wrong" here, it
is very difficult to discern what it is.

In the past, we have seen problems with the Linux kernel filling up the
firmware's available nvram space and as a result causing boot problems.
This could be another instance of that problem, but that doesn't seem to fit
with the idea of efibootmgr successfully allowing boot entries to be
deleted.