So this is where I am with this...
As per trinidad's suggestions, I increased my swappiness to 80 and reduced my vfs cache pressure to 50. I also briefly downgraded zenity and zenity-common from versions 3.32.0-5 to 3.18.1.1-1 and then ran Linux Lite's 'Install Updates' again, however the same graphical glitch problem (or 'silent updates' problem as referenced by stevef, referring to earlier posts in Jan 2019 - https://www.linuxliteos.com/forums/insta...-indicator) still occurred.
So this is my workaround/adaptation solution -
A couple of years ago I installed Xubuntu-core and had to install Ubuntu's 'Software Updater' (Ubuntu's native update app). From my old notes, I saw that you have to install five packages to use Ubuntu's Software Updater, three of which are already installed in Linux Lite - python3-update-manager, update-manager-core, and update-notifier-common. So by simply adding two more packages via Synaptic - (Gnome) update-manager and update- notifier - you can avail yourself of Ubuntu's Software Updater in Linux Lite.
Ubuntu's Software Updater runs perfectly on my hardware without any graphical glitches/silent updates. And being interactive, the great thing about Ubuntu's Software Updater is that if, on occasion, you don't want to upgrade a particular package (e.g. an older version of libreoffice, as Şerban mentioned), you can just uncheck the package and choose not upgrade it.
One minor irritant is that Ubuntu's Software Updater also installs 'apport', Ubuntu's native bug reporting app (not needed in Linux Lite) that causes 'live' bug reporting pop-ups to appear. This function of apport can easily be disabled by going to /etc/default/apport and changing the value of enabled=1 to enabled=0.
Of course, it's understandable why Jerry and the team ring-fence their updates to avoid noobs deselecting packages willy-nilly and causing self-inflicted issues in Linux Lite. But for those with a little bit of knowledge and discernment, Ubuntu's interactive Software Updater can be quite useful in respect of avoiding upgrades of specific packages.
Footnote: If anyone has any theories as to why Ubuntu's Software Updater works perfectly on my hardware, while Linux Lite's native 'Install Updates' app doesn't, it would be interesting to hear.
Cheers
As per trinidad's suggestions, I increased my swappiness to 80 and reduced my vfs cache pressure to 50. I also briefly downgraded zenity and zenity-common from versions 3.32.0-5 to 3.18.1.1-1 and then ran Linux Lite's 'Install Updates' again, however the same graphical glitch problem (or 'silent updates' problem as referenced by stevef, referring to earlier posts in Jan 2019 - https://www.linuxliteos.com/forums/insta...-indicator) still occurred.
So this is my workaround/adaptation solution -
A couple of years ago I installed Xubuntu-core and had to install Ubuntu's 'Software Updater' (Ubuntu's native update app). From my old notes, I saw that you have to install five packages to use Ubuntu's Software Updater, three of which are already installed in Linux Lite - python3-update-manager, update-manager-core, and update-notifier-common. So by simply adding two more packages via Synaptic - (Gnome) update-manager and update- notifier - you can avail yourself of Ubuntu's Software Updater in Linux Lite.
Ubuntu's Software Updater runs perfectly on my hardware without any graphical glitches/silent updates. And being interactive, the great thing about Ubuntu's Software Updater is that if, on occasion, you don't want to upgrade a particular package (e.g. an older version of libreoffice, as Şerban mentioned), you can just uncheck the package and choose not upgrade it.
One minor irritant is that Ubuntu's Software Updater also installs 'apport', Ubuntu's native bug reporting app (not needed in Linux Lite) that causes 'live' bug reporting pop-ups to appear. This function of apport can easily be disabled by going to /etc/default/apport and changing the value of enabled=1 to enabled=0.
Of course, it's understandable why Jerry and the team ring-fence their updates to avoid noobs deselecting packages willy-nilly and causing self-inflicted issues in Linux Lite. But for those with a little bit of knowledge and discernment, Ubuntu's interactive Software Updater can be quite useful in respect of avoiding upgrades of specific packages.
Footnote: If anyone has any theories as to why Ubuntu's Software Updater works perfectly on my hardware, while Linux Lite's native 'Install Updates' app doesn't, it would be interesting to hear.
Cheers
Still running 3.8 and lovin' it (running 5.0 as a triple boot)