Re: [sid] efibootmgr not working on linux 5.10.x & LGA1155
On 2021-04-08 22:30 +0200, Grzesiek wrote:
> On 3/18/21 9:55 PM, Sven Joachim wrote:
>> On 2021-03-18 21:03 +0100, Grzesiek Sójka wrote:
>>
>>> I noticed recently that efibootmgr stoped working. On all my Sid
>>> machines I get the following:
>>>
>>> # efibootmgr
>>> EFI variables are not supported on this system.
>>>
>>> But if I run Buster (the same hardware) then everything is ok. So this
>>> is definitely software problem. I also noticed that the
>>> /sys/firmware/efi/efivars
>>> directory is empty.
>> Not here, and efibootmgr works for me.
>>
>>> Kernel problem? Missing modules?
>> Perhaps the efivarfs module is not loaded. I don not have to load
>> it
>> manually, though.
>
> The problem seems to be related to 5.10.x kernels & LGA1155 based systems.
>
> 1. On laptop based on i5-8250u efibootmgr works fine (all kernel versions)
>
> 2. On systems based on LGA1155 socket (i5-2500k, i7-3770):
> - kernels 5.10.x: efibootmgr does not work,
> directory /sys/firmware/efi/efivars is empty
> - kernel 5.8.0-2: efibootmgr woks as expected
>
> On 5.8.0-2 i get:
>
> # lsmod | grep efi
> efivarfs 16384 0
> efi_pstore 16384 0
> efivars 20480 1 efi_pstore
>
> There is no efivars.ko in 5.10.x. Maybe that is the problem?
The efivars module has indeed been removed from Debian's 5.10 kernels,
as it had been deprecated in favor of efivarfs for a while.
Which versions of efibootmgr and libefivar1 do you have installed?
Cheers,
Sven
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