bugGNU GRUB - Bugs: bug #64090, at_keyboard hangs HP EliteBooks...


You are not allowed to post comments on this tracker with your current authentication level.

bug #64090: at_keyboard hangs HP EliteBooks with GRUB on Coreboot

Submitter:  Riku Viitanen <riku_v>
Submitted:  Sat 22 Apr 2023 12:44:00 PM UTC
Category:  Booting Severity:  Major
Priority:  5 - Normal Item Group:  Hardware-specific
Status:  None Privacy:  Public
Assigned to:  None Originator Name:  Riku Viitanen
Open/Closed:  Open Release:  other
Release:  Reproducibility:  Every Time
Planned Release:  None

Sat 22 Apr 2023 11:00:11 PM UTC, comment #1: 

Patch looks good. Can you send it to -email is unavailable- ?

Vladimir Serbinenko <phcoder>
Group administrator
Sat 22 Apr 2023 12:44:00 PM UTC, original submission:  

This has been happening for over 5 years: https://ticket.coreboot.org/issues/141

On EliteBooks with Coreboot+GRUB, GRUB hangs infinitely on the menu screen. When using Coreboot+SeaBIOS to load GRUB from an MBR hard drive, GRUB works fine.

I fixed this by implementing a 200 ms timeout in keyboard_controller_wait_until_ready. This patch is now automatically applied in Libreboot. Keyboard works correctly now, and GRUB no longer hangs.

Riku Viitanen <riku_v>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attached Files


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -email is unavailable- added by phcoder (Posted a comment)
  • -email is unavailable- added by riku_v (Submitted the item)

    There are 0 votes so far. Votes easily highlight which items people would like to see resolved in priority, independently of the priority of the item set by tracker managers.


    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2023-04-22 riku_v Attached File- Added 0005-at-keyboard-timeout.patch, #54652

    Back to the top

    Powered by Savane 3.12