OK. Well, in honouring the scientific principle [only change one variable per experiment], for now i have not edited grub, but i have unplugged the lower mouse & keyboard, ie, as of now there's only one of each active [ooh, it feels so... conventional 
]. I'll run like this indefinitely if there's no more freezes, but if there are, then i'll do the grub update [& btw, if another freeze does occur anyway, it would contra-indicate the dual h/w conflict hypothesis, in which case i might revert to it for ergonomic preference... but only if another freeze first occurs without them connected]. Depending on relative timing, i'll also do the kernel update, but only once the other variables have had enough time to prove or disprove their role in the freeze hypothesis. Ta muchly.
Tis 01:00 now; am about to Suspend & zzzzz. Wonder what the daylight will bring?
]. I'll run like this indefinitely if there's no more freezes, but if there are, then i'll do the grub update [& btw, if another freeze does occur anyway, it would contra-indicate the dual h/w conflict hypothesis, in which case i might revert to it for ergonomic preference... but only if another freeze first occurs without them connected]. Depending on relative timing, i'll also do the kernel update, but only once the other variables have had enough time to prove or disprove their role in the freeze hypothesis. Ta muchly.Tis 01:00 now; am about to Suspend & zzzzz. Wonder what the daylight will bring?