I have had a laptop since Monday on which I installed Kubuntu 20.04 in addition to Windows 10. Since the CPU is very new and is not supported by the 5.4 kernel, I updated to the 5.6.0 kernel. Now the laptop is running.
Now I have the following problem: Sometimes the laptop hangs when shutting down. The screen then turns black and a small line flashes in the top left, as if waiting for an entry. But I can't type. The laptop remains in this state until I "stall" it by pressing the power button for a longer time.
It doesn't matter whether I shutdown or restart the laptop using the buttons in the menu or using the terminal with "sudo reboot now" or "sudo shutdown now".
Does anyone have any idea what I can try?
It doesn't matter whether the laptop is on battery or mains operation. The error does not always occur.
So that the laptop starts I set the boot mode to "Legacy" and "UEFI first" in the BIOS. I don't know if that's important.
Look in the update management. As far as I know, there has been an option for some time (at least under April 18), in which security-critical updates are automatically determined and installed after startup. Depending on the scope of the installation, this can sometimes take a long time.
In one case, a notebook hung in this indefinable state for about half an hour and was not shut down. Only by calling up a virtual console and entering the top command was I able to determine that the update process was still running. I didn't dare to stall.
I wanted to try that now and he just went down every time… If it stays that way, xD
