Użytkownik Ern jura napisał:

What command should I use to restore my desktop panels they disappeared after I increased the screen resolution

it's depend on desktop you are using; in Gnome, this will be:

gnome-panel &

run this as "panelless" user, not root; there are at least three ways to acces terminal without panel; first is ctrl+alt+F1, second is desktop icon, third is nautilus-open-terminal package

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