I found the answer, I wanted to change the background on the login screen. Since I am using LXQT, the background is provided and the default background for the display manager, in this case LXDM. That is set in the LXDM config file (/etc/lxdm/lxdm.conf) by setting the bg variable and pointing it to an image file the login background is set. Simple!

Phil

If you are using Beowolf, I would recommend that yuotry and older kernel. I do remember that problem with one version of the 4. something kernel and then again with a version of the 5 kernel.

I am running a Dell laptop with an AMD A12 processor and I remember that other folks had the same problem.

Good Luck fixing things.

Phil

I see that you are running with and AMD processor, I also have an AMD A12 and I have run into several suspend issues over the last few years. Twice the kernel folks broke systems with AMD processors causing suspend issues when someone was updating some kernel stuff. I was running Fedora when this happened. My system would suspend but the screen would never come back on wake up. The screen was blank, black and the system would not respond to the keyboard.

I had the same issue when changing to Devuan Chimera. I fixed my problem by using synaptic and searching for amd. I installed the AMD firmware package,  along with the firmware and graphics package which fixed my problem. My system suspends and hibernates properly now.

I hope this helps.

Phil