I've used my Manjaro KDE (20.0.3 Lysia) installation for about six months with out any problems. Then with out warning the sleep function stopped working which I use regularly. I used Timeshift to restore a point before it stopped working but this fixed nothing. What happens is when I initiate the sleep the screen turns black, and I ONLY see the pointer for about 90 seconds, then it goes to start screen ready to be logged in.
Yesterday I deleted the installation and started again (20.0.3 Lysia) with a fresh install. I was going to closely monitor the new installation and install my critical apps one by one then test the sleep in between each installation. Every thing was working great and I had all my required apps installed with all the Manjaro updates as well and sleep was still working.
Today with out any further updates and no more installations the sleep function stopped working. I have no idea what is causing it? I tried Timeshift once again, but still no fix. I searched the web and some have said it could be a kernel update, but I closely watched this during the installation and afterwards where the kernel started off from 5.4 then upgraded to 5.6 and sleep worked fine on both versions. Also I have seen bluetooth could be a suspect, but I have paired NO devices at all and also switched off the functionality.
I have an Intel Skull Canyon NUC8i7HVK with 32GB RAM. Does anyone have any ideas?