Hardware

Replace cartridge: Open access to printer, press stop 5 seconds and repeat. You don't need to replace the cartridge, you can clean it carefully with some soft tissue.
Youtube: How to remove the print head

This might be useful when your machine shuts down unexpectadly under heavy loads: https://github.com/FlyGoat/RyzenAdj

For me it only happens in Windows when the batery is charging too. I think charging thresholds are a must. In linux we have tlp: https://linrunner.de/tlp/ and https://wiki.archlinux.org/index.php/TLP and https://github.com/linrunner/TLP :-D

I have an old external seagate ssd 2TB for backup called "BUP Slim BL". It was a challenge to enable the SMART capability on Ubuntu 20.10.

You might give this a go: sudo smartctl -d sat -T permissive --smart=on /dev/sda1

If that does not work, you might need:

echo options usb-storage quirks=$(lsusb | awk '/Seagate/ {print $6}'):u | sudo tee -a /etc/modprobe.d/ignore_uas.conf
sudo update-initramfs -u

The screen started flickering and the quick fix is to push down just above the keyboard in the middle and then the flickering stops. Looks like a loose connection of the cable connecting the screen with the motherboard.

Lenovo IdeaPad G580 Laptop Screen Replacement Procedure: https://www.youtube.com/watch?v=smGMmZzm9bc

Lenovo G580 Laptop Disassembly video, take a part, how to open: https://www.youtube.com/watch?v=84lV68WRKlQ

Recently I am experiencing bad connectivity on my LCD-screen. It seems to happen randomly and periodically. The connection is disrupted and a gray darkish void appears on the screen. Sometimes this can be ammended by moving the screen up and down but the bulletproof solution is to suspend the laptop and wake it up again, then the screen works properly. Sometimes for hours sometimes only for minutes. Last time I managed to remove and reattach the left hand side LCD-connector from the motherboard. This releived the problem for a couple of days, but now it's back again.