Found the solution to the problem. in this post
Here the procedure in short:
I found the setting using:
gsettings list-recursively | grep -i Tab
and replaced it by using
gsettings set org.gnome.desktop.wm.keybindings switch-panels "['<Control><Alt><Super>Tab']"
E: The repository 'http://ppa.launchpad.net/mpstark/elementary-tweaks-daily/ubuntu bionic Release' does not have a Release file.
Seems like a fairly old Elementary-tweaks ppa to me. It's erroring because it's not really up and running for Ubuntu Bionic.
Taking a quick look over the launchpad says it doesn't work for anything over eOS Freya(0.3), ...
I had to remove the HDD on my computer before I could install Elementary OS onto the NVME drive. If you can't remove the HDD easily look in the BIOS to see if there is an option to turn of the particular SATA port your HDD is attached to.
so now when re open appcenter i get same error/aler box saying
E: http://dl.google.com/linux/chrome/deb stable InRelease is not (yet) available (Could not connect to dl.google.com:80 (126.96.36.199), connection timed out)
E: http://ppa.launchpad.net/alexlarsson/flatpak/ubuntu bionic InRelease is not (yet) available (Could not connect to ppa.launchpad.net:...
Most probably when it stays locked for long times it logs out, that is why when you unlock, you actually login again.
Play around with the Power settings in System Settings, to configure it properly.
Look for the time setting in Suspend when inactive section.
this happens to me too, but I do not understand the solution well, are you saying that you have to uninstall the elementary-tweaks package ?, because removing said package you do not have the option to minimize.
The first step in resolving these issues is to see if you can establish whether your system is CPU bound, I/O bound, or memory bound. This is just a fancy way of saying you have a bottleneck at the CPU, disk/network, or memory.
Install Gnome System Monitor from the AppCenter and when you start to notice the system is slowing down or freezing open it up and ...
This error means that snap is doing something in the background. You can see what is going on by typing the following in the terminal:
If after some time the situation doesn't resolve itself you can abort any of the processes that are listed by typing:
sudo snap abort id
NOTE: "id" should be replaced by the number at the beginning of the ...
Tweaks do not really help, most windows follow the decoration (e.g., "minized on right" or "windows style") but several apps (VLC, SM PLayer, UM PLayer, Virtualbox, Teamviewer, DoubleCommander, Gigolo) don't.
I can assure you that it is possible and that the result is great! Hera uses seemlessly (I didn't check) less ressources, runs smoother, and close lid suspend/resume is now working fine and fully supported.
Now please backup everything first, and take my word of caution: I did encounter a small error but it could be solved along the way, but you have to be ...
If this is a laptop, try from a terminal session
'sudo prime-select intel'
That should disable the nvidia gpu. Try rebooting (it might hang one last time). And then do multiple boot cycles and please report back.
Hitting ESC (as previously indicated) might give you some more information of what's going on in the backend.