Il 31/07/20 13:08, ja ha scritto:
On Fri, 2020-07-31 at 22:35 +1200, Alan McRae via CentOS wrote:
I am running an Intel x64 machine using UEFI to boot an SSD.
Installing the latest yum update which includes grub2 and kernel
4.18.0-193.14.2.el8_2.x86_64 renders the machine unbootable, blank
screen where grub should be, no error messages, just hangs.
After some hours I managed to modify another bootable partition
(containing older software) and boot it from there.
After that, I found out it is a known problem.
The main point of this message is to make people aware of the problem
and suggest admins don't run 'yum update' until they understand the
problem and have a fix at hand.
See 'UEFI boot blank screen post update' for a solution and directions
to the redhat article.
Regards
Alan
I have been punished by this bug - it is/was very nasty.
Me too. Luckily it happened on a test machine.
Sorry but seems that those packages were not tested before pushing them
in the update repo. Would be great to know what happened to the
mainstream chains and how a package like grub reached the update repo
when it has serious problem (genuine curiosity but not to blame them).
In my case, the restore procedure reported by RH in case of reboot does
not work and reports that the packages are already at the lowest version
and that the downgrade is not possibile. I don't know why.
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