Sometimes the extended screens seem to die. Apparently the extended desktop settings may get corrupted.
In this case, the user may go to the extended desktop settings and switch the mode to "duplicate". This will overwrite corrupted settings and after some fiddling the extended desktop may be configured as in the original setup.
sudo apt-get install exfat-fuse exfat-utils Source: https://askubuntu.com/questions/1057423/ubuntu-18-04-does-not-mount-2tb-exfat-drive-even-after-installing-exfat-fuse-exf Source: https://www.makeuseof.com/windows-show-dim-display-after-option/
In PowerShell, enter the following command to show the Dim Display after option in the Power Options menu:
powercfg -attributes SUB_VIDEO 17aaa29b-8b43-4b94-aafe-35f64daaf1ee -ATTRIB_HIDETo hide it, enter the following command:
powercfg -attributes SUB_VIDEO 17aaa29b-8b43-4b94-aafe-35f64daaf1ee +ATTRIB_HIDE
Source: https://forum.macrium.com/21582/Cloning-to-a-smaller-SSD
In [Macrium] Reflect, select your source disk and click "Clone this disk". In the first step of the wizard where you specify the source and destination, select your smaller SSD as the destination. Then start dragging your partitions down from the source to destination one at a time, working left to right, but when you get to a partition you want to shrink, drag it down to the destination, click it down there, and select "Cloned partition properties". Change its size on the destination as desired, then proceed with any remaining partitions.