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

[Arnold Schulz]

Follow-up Comment #1, bug #64294 (project grub):

Problem is solved after this commit:
title "efi: Add missing __grub_efi_api attributes"
6d8853e215716bb389f61a6941d2d893468470f4



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

[Arnold Schulz]

URL:
  

 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: arny...@gmx.net
 Open/Closed: Open
 Release: Git master
 Release: 
 Discussion Lock: Any
 Reproducibility: Every Time
 Planned Release: None


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Follow-up Comments:


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Date: Sun 11 Jun 2023 02:35:35 PM UTC By: Arnold Schulz 
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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