Returning from sleep changes wallpaper on 2nd monitor

[jfabernathy]

I recently upgraded from Kubuntu 21.10 to Kubuntu 22.04. It defaulted to Xorg so that's what I'm running. I have a dual monitor setup using an Nvidia GT 1030. I have the system enabled to allow sleep after 30 minutes in both user account. My wife and I share the system for home computing needs.

I notice that I can't keep both monitors on my preferred wallpaper which is not the default one. I find something is happening that changes the 2nd monitor's wallpaper to the 22.04 default KDE wallpaper when it wakes up from sleep. I did not notice this when I didn't allow the sleep function.

Is this a configuration issue or a bug?

[jfabernathy]

I am seeing this message in the Notifications around the time I wake up the system by pressing the spacebar.

Desktop effects were restarted due to a graphics reset

[jlittle]

In general, settings not sticking may be due to a permissions problem in your home directory. You can check ownership by running

find . '!' -user $USER

in your home directory.

[jfabernathy]

In general, settings not sticking may be due to a permissions problem in your home directory. You can check ownership by running

find . '!' -user $USER

in your home directory.

that command returned nothing, so many not the problem.

However, I did try to simplify the problem by turning off suspend/sleeping. I will use the system and sometimes logoff and sometimes switch users. My wife will do the same. But occasionally one of the monitor's background will change back to the default background that was set after original upgrade to 22.04. But I don't think this is 22.04 related as we've had this issue since using Kubuntu and dual monitors.

At least once problem of dual monitors has been fixed. We don't seem to have the screens lock up anymore. The only apps uses on this system are Google Chrome, Thunderbird, calculator, and occasionally Libreoffice.

[oshunluvr]

I feel like a broken record because I complain about this all the time, but it's probably Kscreen causing it. It's really junk. I always end up uninstalling it and just setting the monitors the old fashioned way. It was the worst on my laptop- I would plug it into my 38" 3840x1600 and kscreen would set it to 60hz which isn't supported, so black screen. And of course, it would set the un-viewable screen as the main screen so I couldn't do anything with it. I just wrote log-in script that sets it correctly and removed kscreen.

[jfabernathy]

I feel like a broken record because I complain about this all the time, but it's probably Kscreen causing it. It's really junk. I always end up uninstalling it and just setting the monitors the old fashioned way. It was the worst on my laptop- I would plug it into my 38" 3840x1600 and kscreen would set it to 60hz which isn't supported, so black screen. And of course, it would set the un-viewable screen as the main screen so I couldn't do anything with it. I just wrote log-in script that sets it correctly and removed kscreen.

I think the combination of multiple monitors and multiple uses on a system is a problem across multiple DEs. We had the same problem with Linux Mint 20 on the same hardware.
If you add in allowing suspend on inactivity, then you have a very unstable system.