Linux Lenovo-V330 5.11.0-34-generic #36-Ubuntu SMP Thu Aug 26 19:22:09 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
The problem I have and it has been suggested that I report it here; is either still the same problem or similar to problems reported six years ago as follows:
Linux Lenovo-V330 5.11.0-25-generic #27-Ubuntu SMP Fri Jul 9 23:06:29 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
My system every now and then virtually stops and I have to reboot to enable control of everything again.
I mean I lose control of closing apps or opening Panel icons.
The only control I have is to open the Main Menu and scroll to the Shutdown.
Out of all this I think it happens when I click to open a New Tab on Google Chrome.
It is not a regular thing but is very frustrating. Especially if I'm working on something.
I have been using the Brave browser lately and have not encountered this problem with it so far.
I will stop using Chrome for now to evaluate things.
UPDATE: I stopped using Chrome for some weeks and used the Brave and Midori browsers instead. Yesterday after some time of no problems and still not using Chrome, I switched compositor again from Marco to Compiz. After using the computer for about 90 minutes I opened a new tab on the Brave browser and clicked in the Search bar. At this point I found I could not input text. I was able to open other programs but input was limited with some options not working. I could not input text anywhere so my work had to stop. I could not exit via the Top Panel and had to use the Exit button at the bottom of the Main menu.
All was well when I rebooted and so I changed my compositor back to Marco. This has been fine so far and again I will continue with this for some time to see if I get a problem or not.
I suspect all will be well and that the root cause is my graphics card incompatibility with Compiz.
I use Compiz on an older Lenovo which has the option to not use the graphics card driver. I don't have this option on my younger Lenovo.
Six years guys...and there were problems with graphics cards before this.
The thing is, I was an Admin on Ultimate Linux for a while and during that time graphics was not a problem on my systems. I used Dell desktops and laptops, Sony laptops, Acer laptops and a custom built eight core machine. All with no graphics problems and I used Compiz with the Emerald theme manager. Ultimate Edition ver.2.6 through 2.9 were brilliant Linux distros. Steady reliable systems. Unfortunately can't say the same nowadays. Something fundamental in the distro has changed and it doesn't want to work with my Lenovos.
C'est la vie.