I got a Logitech EX110 wireless keyboard and mouse set about a year or so ago, maybe more. The number pad on the keyboard stopped working after a while, so I complained to Logitech, and they sent me a new keyboard (actually, the whole set).
I've had the problem on and off again a couple of times since then, but it usually only lasts a few days before all is well again.
However, my son also has the same set (well, same model, different pieces of hardware) on his Windows XP machine, and he has _never_ had this problem. Tonight, he suggested that it might be a Linux problem, so I took our spare keyboard of this same type and switched them on my machine.
Surprise: the new keyboard has exactly the same problem - no response from the number pad.
Actually, that's not entirely accurate. The num lock and the Enter key both work, but the 5 key produces some control combination I don't recognize (seems to behave something like ^V of a previously ^X'd clipboard copy, unrelated to the current input), and the + key which seems to produce something like ^V^V, or "highlight the current terminal line" or something, but none of the other keys work at all.
In any case, it looks like this is a problem with the keyboard driver, not the keyboard hardware.
If I replace the wireless set with a wired keyboard and mouse, without rebooting, the mouse works, but the keyboard does not. (Apparently, after I tried the following, it turned out to be a bad keyboard....)
If I replace the keyboard and reboot, oh, foo, bad keyboard. But! If I reboot with a good keyboard, it works, and then I can switch back to the wireless set and everything works, _including_ the number pad: 0.123456789/*-+
Is there a way to refresh the keyboard driver without rebooting?
Anyway, thoughts, suggestions, etc. welcome.
mhr