My screen is flickering

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Display flickering solved - Dell laptop latitude 3301

The display flickered and/or switched off when moving it, both on Ubuntu and on the BIOS screen.  All web advice says that it must be a  hardware problem when it happens in both.  After changing Ubuntu settings, it is working perfectly:

Just open " System Settings - Display and Monitor - Compositor " and untick/leave blank the two

" Compositing " settings (" Enable on startup " & " Allow applications to block compositing ")

Then...

" Scale Method - Accurate ".  " Latency: Prefer smooth animations ". " Tearing prevention (vsync):  Full screen re-paints ".
The...n open the Power Managament system settings and untick/leave blank the settings for everything except:

" Button Events handling " where you have to choose: " When laptop lid closed - Do nothing "  

Do this on the three tabs (" On AC Power / On Battery / On Low Battery ").  Restart laptop.  

The touchpad settings might become buggy in " scroll direction - drag and lock - finger tapping ":

To solve it, open the terminal or konsole and paste (from the file menu):
sudo modprobe -r psmouse
...and press enter.  Then paste:
sudo modprobe psmouse
...and press enter.

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KDE Plasma Version: 5.24.7
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
Kernel Version: 6.8.0-64-lowlatency (64-bit)
Graphics Platform: X11
Graphics Processor: Mesa Intel® UHD Graphics 620
Ubuntu Studio 22.04 (running rather well from a persistent (fast) card installation on the SD slot, not from the hard disk, because Dell refuse to provide recovery key as I cannot find the name of the vendor).