Re: Display Manager Lagging After Last Update

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On 28/2/18 10:11 am, Ed Greshko wrote:
On 02/28/18 04:37, Stephen Morris wrote:
I might be getting confused with Ubuntu, but I thought there was a .conf file
somewhere that held the specification of the default display manager that could
easily be edited to swap between any of the available display managers that you
happen to have installed.

With the advent of systemd there hasn't been a configuration file for a long time.
It is extremely easy to switch between DM's.

systemctl --force enable gdm       or kdm, or sddm, or lightdm or whatever.

Thanks Ed, I switched from gdm to kdm by the following:

sudo systemctl disable gdm.service

sudo systemctl enable kdm.service

With kdm I don't get the issue, so to try and debug where/what the issue is I switched back to gdm which as expected exhibited the issue again. To eliminate the old issue of gdm and kde not functioning together properly I started up gnome (both gnome, I assume with wayland, and gnome for xorg). It appeared from this that the system update I did that prompted this mail has stuffed gnome on my system. The gnome session I started was running the wrong resolution, it wasn't running the resolution it was on the last time I used gnome, the horrific lag that gdm was getting the gnome desktop was as well, and when I eventually was able to start konsole for the shell as I always do, the konsole session went haywire with things like randomly single keypresses storming that key across the screen. Despite all this I was able to start top, which highlighted that Gnome-Shell was using 450 - 800 % of the cpu, so it looks like the updated stuffed gnome-shell on my system, but I'm not sure that that explains the desktop resolution being destroyed. The next question with this is how, as a starting point do we get Gnome-Shell fixed.


regards,

Steve



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