I noticed in journalctl that gnome-shell was core dumping.
yum reinstall gnome-shell fixed my displays problem.
So I am back to my first premise that the 'yum update' did not complete
properly for some reason.
Is there any way I can check the integrity of the packages installed?
What could cause 'yum upgrade' to say 'Nothing to do' and not install
the latest 305 kernel?
Alan
--
Alan McRae
On 05/06/2021 15:30, Alan McRae via CentOS wrote:
The yum upgrade from 8.3 to 8.4 on my main machine looked as if it
was working fine so I went to have a coffee.
When I came back the screens were blank so I don't know what happened.
On rebooting the screens are still blank.
I have two graphics cards running three displays.
I have a "rescue" system on the same machine that upgraded from 8.3 to
8.4 fine. The 3 screens work fine on this.
I am not sure the upgrade completed properly. For example the new kernel:
vmlinuz-4.18.0-305.3.1.el8.x86_64
was not present in /boot. Even worse, "yum upgrade" said there was
nothing to do and would not install it. I installed the kernel package
manually. /etc/redhat-release says CentOS Linux release 8.4.2105
My main question is: Where are the config files for the screen(s).
This used to be something like /etc/X11/xorg.conf.
Since I have a working rescue system my current plan is to
compare/copy the config files.
Suggestions please as to where I should start. It is difficult to work
without a GUI. I have ssh access to the machine.
Thanks
Alan
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