I don't have this problem on other flavors, but on Kubuntu 20.04 when my desktop goes to suspend it won't wake up. My keyboard is still lit up and and everything working, but moving the mouse or using the keyboard won't wake it from suspend. I have a dual monitor setup if that's relevant. Will provide more information and command outputs if needed.
I'm using Nvidia driver 470.86 and this is my /etc/X11/xorg.conf.
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection
Section "Files"
EndSection
Section "Module"
Load "dbe"
Load "extmod"
Load "type1"
Load "freetype"
Load "glx"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Lenovo Group Limited LEN L24q-30"
HorizSync 114.0 - 114.0
VertRefresh 48.0 - 75.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "NVIDIA GeForce GTX 980 Ti"
Option "TripleBuffer" "On"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "Stereo" "0"
Option "nvidiaXineramaInfoOrder" "DFP-4"
Option "metamodes" "DP-2: nvidia-auto-select +0+0 {ForceCompositionPipeline=On}, HDMI-0: nvidia-auto-select +2560+0 {ForceCompositionPipeline=On}"
Option "SLI" "Off"
Option "MultiGPU" "Off"
Option "BaseMosaic" "off"
SubSection "Display"
Depth 24
EndSubSection
EndSection