[OpenIndiana-discuss] Antwort: Re: System halts on boot when there is no keyboard

[Robin Axelsson]

On 2011-04-11 09:34, Michael Schuster wrote:
> On 11.04.2011 09:30, thorsten.heit at vkb.de wrote:
>> Hi,
>>
>>>> "I also noticed that as soon as I insert the keyboard to the PS/2 port
>> the
>>>> orange sausage starts to roll and the system boots up, so it is as if
>> the
>>>> system is just sitting there waiting for a keyboard to say "Hello"."
>>>>
>>>> Does PS/2 support 'hotswap' as usb does?
>>
>> AFAIK no.
>> Longer time ago I've heard rumors that you shouldn't unplug and replug a
>> device from/to a PS/2 port because that can cause damage to the 
>> hardware.
>> I have done it few times with a keyboard but never had any problems...
>
> IME, removing a PS/2 device while the system is running will work (in 
> the sense that the machine continues to run), but re-connecting won't 
> have any effect (until reboot ;-).
>
> HTH
> Michael
I read somewhere that according to the original PS/2 specs you cannot 
"hot swap" PS/2 devices but most systems that have these ports can 
handle it anyway.

I can remove and reconnect the keyboard to the PS/2 port on my computers 
and they won't lose it. USB mice on my OpenIndiana machine on the other 
hand will be lost once I disconnect it. If I try to reconnect it to the 
same USB port it won't happen, but if I connect to another USB port and 
be patient, the mouse will come back. If I disconnect from that new port 
it will be lost until next reboot so I have to find another USB port the 
mouse wasn't previously connected to if I want to get it back, an so on...