[bug #64294] Black screen on Dell after commit "efi: Drop all uses of efi_call_XX() wrappers"

URL:
  <https://savannah.gnu.org/bugs/?64294>

                 Summary: Black screen on Dell after commit "efi: Drop all
uses of efi_call_XX() wrappers"
                   Group: GNU GRUB
               Submitter: arnysch
               Submitted: Sun 11 Jun 2023 02:35:35 PM UTC
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: Hardware-specific
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Arnold
        Originator Email: [email protected]
             Open/Closed: Open
                 Release: Git master
                 Release: 
         Discussion Lock: Any
         Reproducibility: Every Time
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Sun 11 Jun 2023 02:35:35 PM UTC By: Arnold Schulz <arnysch>
Symptom: When UEFI boot manager runs grub-x86_64.efi, the screen immediately
turns black and the affected machine hangs, or seems to hang.

First occurred after commit in branch master at 2023-05-25 16:48:00 +0200,
title "efi: Drop all uses of efi_call_XX() wrappers",
bb4aa6e06ee3877110a1dc0eb0d766ffac978993
(determined by bisecting seach)

This happens only on one out of three tested machines, when booting the same
grub-x86_64.efi file:
- Gigabyte board Z77X-UD5H (ok)
- VirtualBox 7.0.8 running on Latitude 7490 (ok)
- Dell Latitude 7490 (==> NOT OK)
All with Secure Boot turned off.

I will be happy to run more test, but would need instructions.








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