[CentOS] Upgrade to 8.4 .2105 Problems

Sat Jun 5 04:32:30 UTC 2021
Alan McRae <amcrae at island42.net>

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 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