Black screen on Nobara 40 after system update.
I suppose that it is bug, maybe in Nobara, more probably in KDE. After having updated the system on Nobara 40 and rebooting, you'll get the fatal error plasmashell closed unexpectedly. The screenshot shows the message on my VMware virtual machine.
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The error is fatal, because after having closed the message window, all that remains is an entirely black screen. I found a simple solution
to the problem in the answer to a post on the reddit website. Hit CTRL+ALT+F3 to terminate the X server and logout.
Then login (into the Linux command line) with your standard user account. The solution consists in deleting the "plasmashell" folder in the home
directory. This may be done by running the command
rm -rf ~/.cache/plasmashell
When done, type reboot to restart the computer. Everything should be fine again...
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