I suspend to ram. Sometimes when I resume, some of the keys do not work. Some keys are reacting, but ALT-TAB for one is not.
What can I do to ask the auto detection to retry configuring keyboard?
Switch to a console (CTRL-ALT-F1) and switch back (CTRL-ALT-F8) solves it.
You should (i) upgrade everything in your distribution (or upgrade if it is out of date/not maintained actively anymore), and (ii) report to them.
At best, here we might suggest workarounds, or speculate on possible bugs. No real solution will be forthcomming.