> On 23 Oct 2005 20:16:54 -0700, email@example.com
> >do some USB keyboards not support the wake on USB feature properly? I
> >find mine doesn't flash when i plug it in yet 5V is coming out the USB
> >even when i turn on the comp, the keyb appears not to react, num lock
> >won't work for example. But I can get to the BIOS when I press DEL. And
> >it's fine after that. I'm wondering if this is common. If it's
> >possible to avoid buying a keyboard like this next time round! So, i'd
> >like ot know if there's some feature or detail i should look for in the
> >spec or some make of keyb i should be looking at. I don't want to buy
> >one like this again
> Keyboards are usually fairly "dumb" devices and behave the
> same no matter what the system state is. I suspect your
> system has a problem with USB after waking up, and that the
> bios doesn't support USB keyboards natively (but you might
> check for a related bios setting). I suppose it's possible
> there is an interaction between your particular board and
> keyboard or the keyboard itself is abnormal but i would tend
> to suspect the motherboard.
> Have you tried another USB keyboard or that keyboard on
> another system?
I think this is a wrong reaction to the 5V SB, well before the BIOS.
'cos the comp is still off.
I don't have another USB keyboard. I have a ps2 keyboard, and a ps2-usb
adaptor (I know, ps2 keybs don't normally support USB. Mine is no
different. But power works) - the keyboard flashes when plugged into
the USB socket.
I really think this is before the BIOS. a)the comp is off
b)the flashing really does look like a 'dumb reaction'. My ps2 keyb
will flash if plugged into the ps2 mouse port. The 5V SB is there but
it won't operate right. Similarly, the ps2 keyboard will flash when
plugged into the USB port (with the ps2 to USB adaptor) even though I
can't get into the BIOS with it since it's just a ps2 keyb.
must be a strange keyb. i want to avoid this happening again.
Suppose wake is disabled. Then when turning a comp on, the keyb lights
should immediately flash. For USB, it should flash as soon as 5V is
put on that USB's VCC pin on the motherboard.
keybs are dumb devices, but this one is really dumb!!