[Bug 2034705] Re: efivar fails to read variables

[Rade0nfighter]

On the off chance that this issue has a broader impact I will leave a
reference to https://answers.launchpad.net/ubuntu/+question/708251
wherein similar behaviours are being observed with 6.5.0-9-generic on
amd64.

efivar -l returns: "efivar: error listing variables: Function not
implemented", yet `ls /sys/firmware/efi` returns entries.

I noticed this after upgrading from Ubuntu 23.04 when efibootmgr stopped
working.

Ubuntu 23.10 x86_64, 6.5.0-9-generic (Plasma 5.27.8 if that makes a
difference).

Happy to provide any other info on request.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to efivar in Ubuntu.
https://bugs.launchpad.net/bugs/2034705

Title:
  efivar fails to read variables

Status in efivar package in Ubuntu:
  Invalid
Status in linux-meta-riscv package in Ubuntu:
  In Progress

Bug description:
  On riscv64 StarFive VisionFive 2 with U-Boot v2023.10-rc4 and kernel
  6.5.0-2-generic we see this output:

  
  root at ubuntu-server:/var# ls /sys/firmware/efi/efivars/
  AuditMode-8be4df61-93ca-11d2-aa0d-00e098032b8c
  DeployedMode-8be4df61-93ca-11d2-aa0d-00e098032b8c
  OsIndicationsSupported-8be4df61-93ca-11d2-aa0d-00e098032b8c
  PlatformLang-8be4df61-93ca-11d2-aa0d-00e098032b8c
  PlatformLangCodes-8be4df61-93ca-11d2-aa0d-00e098032b8c
  SecureBoot-8be4df61-93ca-11d2-aa0d-00e098032b8c
  SetupMode-8be4df61-93ca-11d2-aa0d-00e098032b8c
  VendorKeys-8be4df61-93ca-11d2-aa0d-00e098032b8c

  root at ubuntu-server:/var# efivar -l
  efivar: error listing variables: Function not implemented

  root at ubuntu-server:/var# efibootmgr -v
  EFI variables are not supported on this system.

  Expected behavior would be to display the variables.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/efivar/+bug/2034705/+subscriptions