System hangs after POST and the grub menu never loads after applying the RHSA-2020:3216 or RHSA-2020:3217

Solution Verified - Updated -

Red Hat Insights can detect this issue

Proactively detect and remediate issues impacting your systems.
View matching systems and remediation

Environment

Confirmed in the following releases

  • Red Hat Enterprise Linux (RHEL) 7.8
  • Red Hat Enterprise Linux (RHEL) 8.2

NOT confirmed in the following releases but potentially affected

  • Red Hat Enterprise Linux (RHEL) 8.1 EUS
  • Red Hat Enterprise Linux (RHEL) 7.9

Issue

UEFI: system hangs after POST and the grub menu never loads after applying the RHSA-2020:3216 and RHSA-2020:3217

Resolution

Red Hat has fixed the bug in the shim packages. Updated shim packages are now available and can be used in conjunction with previously released grub2, fwupd, and fwupdate packages.

Version Release
RHEL 7.8 RHBA-2020:3265
RHEL 8.0.0 RHBA-2020:3264
RHEL 8.1.0 RHBA-2020:3263
RHEL 8.2.0 RHBA-2020:3262

Recovering the system if it's in a dead state due to having only applied the previous errata

  1. Boot the system with the RHEL DVD in Troubleshooting mode

    Refer to How to boot a system into rescue mode for details.

  2. Set up the network

    Refer to Enabling networking in rescue environment without chrooting for details.

  3. Enter the chroot

    # chroot /mnt/sysimage

  4. Apply the errata

    # yum -y update shim\*

  5. Exit the chroot and reboot

    # exit
# exit

Diagnostic Steps

  1. Boot the system with the RHEL DVD in Troubleshooting mode

    Refer to How to boot a system into rescue mode for details.

  2. Enter the chroot

    # chroot /mnt/sysimage

  3. Check the version of shim source package

    # rpm -qa shim-\* --qf "%{SOURCERPM}\n" | sort | uniq

    On a RHEL 7 system, the packages from the following source RPMs are affected:

    shim-15-7.el7_8.src.rpm
shim-signed-15-7.el7_8.src.rpm

    On a RHEL 8 system, the packages from the following source RPMs are affected:

    shim-15-14.el8_2.src.rpm

This solution is part of Red Hat’s fast-track publication program, providing a huge library of solutions that Red Hat engineers have created while supporting our customers. To give you the knowledge you need the instant it becomes available, these articles may be presented in a raw and unedited form.

Comments