Unable to install grub on Intel S5520HC / efi related?

[mbk]

hello all,
as the title suggests, I am unable to install grub on my server. The installation went fine until the point of installing grub. But the installation seems to be intact and I am able to boot via "Rescue Boot" from an installation media. I can create VM's etc all fine. But if I try to install grub, it fails with the following message:

root@pve:~# grub-install --force-extra-removable /dev/sda
Installing for x86_64-efi platform.
File descriptor 4 (/dev/sda2) leaked on vgs invocation. Parent PID 19912: grub-install.real
File descriptor 4 (/dev/sda2) leaked on vgs invocation. Parent PID 19912: grub-install.real
grub-install.real: warning: Cannot set EFI variable Boot0000.
grub-install.real: warning: efivarfs_set_variable: writing to fd 6 failed: Interrupted system call.
grub-install.real: warning: efivarfs_set_variable: failed to unlink /sys/firmware/efi/efivars/Boot0000-8be4df61-93ca-11d2-aa0d-00e098032b8c: Invalid argument.
grub-install.real: warning: _efi_set_variable_mode: ops->set_variable() failed: Interrupted system call.
grub-install.real: error: failed to register the EFI boot entry: Interrupted system call.

The "--force-extra-removable" option was suggested for example here: https://wiki.debian.org/GrubEFIReinstall

efibootmgr shows :

root@pve:~# efibootmgr 
Skipping unreadable variable "Boot0000": Interrupted system call
No BootOrder is set; firmware will attempt recovery

root@pve:~# ls -la  /sys/firmware/efi/efivars/
total 0
drwxr-xr-x 2 root root 0 Feb  1 17:32 .
drwxr-xr-x 5 root root 0 Feb  1 17:32 ..
-rw-r--r-- 1 root root 4 Feb  1 17:32 BmcCfg-9cfddf29-cd16-4df0-bcea-966f693def2d
-rw-r--r-- 1 root root 0 Feb  1 17:52 Boot0000-8be4df61-93ca-11d2-aa0d-00e098032b8c

root@pve:~# ls -la  /sys/firmware/efi/vars/
total 0
drwxr-xr-x 37 root root 0 Feb  1 18:07 .
drwxr-xr-x  5 root root 0 Feb  1 17:32 ..
drwxr-xr-x  2 root root 0 Feb  1 18:08 AbsSysmgmtSerialRedir-ffffffff-ffff-ffff-ffff-ffffffffffff
drwxr-xr-x  2 root root 0 Feb  1 18:08 AcpiGlobalVariable-c020489e-6db2-4ef2-9aa5-ca06fc11d36a
drwxr-xr-x  2 root root 0 Feb  1 18:08 BmcCfg-9cfddf29-cd16-4df0-bcea-966f693def2d
drwxr-xr-x  2 root root 0 Feb  1 18:08 Boot0000-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 Boot0002-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 Boot0003-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 BootCurrent-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 BootFlow-ef152fb4-7b2f-427d-bdb4-7e0a05826e64
drwxr-xr-x  2 root root 0 Feb  1 18:08 BootOrder-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 ConIn-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 ConInDev-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 ConOut-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 ConOutDev-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 DefaultBootOrder-45cf35f6-0d6e-4d04-856a-0370a5b16f53
--w-------  1 root root 0 Feb  1 18:08 del_var
drwxr-xr-x  2 root root 0 Feb  1 18:08 ErrorTimeStamp-d985edca-0cf3-d34e-a6b7-83ee32576996
drwxr-xr-x  2 root root 0 Feb  1 18:08 ErrOutDev-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 FWVERSIONDATA-ec87d643-eba4-4bb5-a1e5-3f3e36b20da9
drwxr-xr-x  2 root root 0 Feb  1 18:08 HiiHubNVSSize-ea816d2c-cee5-4f02-99b5-d3905cbbd077
drwxr-xr-x  2 root root 0 Feb  1 18:08 HtSupport-ffffffff-ffff-ffff-ffff-ffffffffffff
drwxr-xr-x  2 root root 0 Feb  1 18:08 InitialDisplay-ffffffff-ffff-ffff-ffff-ffffffffffff
drwxr-xr-x  2 root root 0 Feb  1 18:08 Lang-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 LangCodes-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 MTC-eb704011-1402-11d3-8e77-00a0c969723b
--w-------  1 root root 0 Feb  1 18:08 new_var
drwxr-xr-x  2 root root 0 Feb  1 18:08 PostErrPause-ffffffff-ffff-ffff-ffff-ffffffffffff
drwxr-xr-x  2 root root 0 Feb  1 18:08 PVMODE-d985edca-0cf3-d34e-a6b7-83ee32576996
drwxr-xr-x  2 root root 0 Feb  1 18:08 RecoveryComplete-d6aaef94-c251-42e4-b9ec-26f0ea45eda8
drwxr-xr-x  2 root root 0 Feb  1 18:08 Setup-ec87d643-eba4-4bb5-a1e5-3f3e36b20da9
drwxr-xr-x  2 root root 0 Feb  1 18:08 SHIM-c811fa38-42c8-4579-a9bb-60e94eddfb34
drwxr-xr-x  2 root root 0 Feb  1 18:08 SlpString-11831846-329c-4f0e-844d-8db7fc8292b3
drwxr-xr-x  2 root root 0 Feb  1 18:08 SMBootOrder-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 SysmgmtSerialFlow-ffffffff-ffff-ffff-ffff-ffffffffffff
drwxr-xr-x  2 root root 0 Feb  1 18:08 SysmgmtSerialRate-ffffffff-ffff-ffff-ffff-ffffffffffff
drwxr-xr-x  2 root root 0 Feb  1 18:08 SysmgmtSerialTerm-ffffffff-ffff-ffff-ffff-ffffffffffff
drwxr-xr-x  2 root root 0 Feb  1 18:08 Timeout-8be4df61-93ca-11d2-aa0d-00e098032b8c
drwxr-xr-x  2 root root 0 Feb  1 18:08 UsbMassDevNum-ec87d643-eba4-4bb5-a1e5-3f3e36b20da9

It's an old Intel serverboard S5520HC
https://ark.intel.com/content/www/de/de/ark/products/36599/intel-server-board-s5520hc.html

Before I switched to proxmox, the server ran a TrueNAS 11 without problems.

I also tried to install from debian netinstall, unfortunately without success.

I do not know what else I can do. Do you have any suggestions ?
If you need more info, please let me know.

Thank you in advance.
Michael

 

[mbk]

After doing more research, it points out that the efi implementation on this board seems broken or something like that.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=730639

So, following the suggestions from here https://wiki.debian.org/UEFI#grub-install_unable_to_set_up_boot_variables, then setting the efi entry manually in the BIOS to '\EFI\proxmox\grubx64.efi' just drops me to a grub rescue shell. I think I am missing some parameters.

Do you know which one ?