Description of problem:
[ I suppose this has to be reported against the latest kenrel ]

I was away on vacation and on return updated my (Cauldron) machines.
Desktop is okay. But my HP laptop misbehaves:

With the kernel-desktop-4.17.2-3 a problem occurs, while with
kernel-desktop-4.14.44-1 it acts okay.

I thought it might be stg with the DM but changing lightdm/lxdm/sddm made no difference.

Only reboot to the latest kernel minus one makes it okay.

The problem is that once I log in to the desktop (Mate of Xfce4) I can start an Eterm terminal and give some commands, but as soon as I try to move to the next desktop ( with Alt + Ctl + Arrow right ) the screen freezes and does hardly anything anymore at all. All 3 DM's and 2 different desktops behave the same. (And with the previous kernel is okay again)

This laptop is an HP 17-ak091nd and the xorf.conf shows inter alia:
Section "Device"
   Identifier "device1"
   VendorName "Advanced Micro Devices, Inc. [AMD/ATI]
   BoardName "ATI Volcanic Islands and later (amdgpu/fglrx0"
   Driver "amdgpu"
   Option "DPMS"
EndSection

I will attach xz compressed files from commands:
journalctl -b > oldkernel.txt
journalctl -b -1 > newkernel.txt