[iyonix-support] Re: KVM freezes Iyonix
- From: Alan Adams <alan.adams@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: iyonix-support@xxxxxxxxxxxxx
- Date: Sat, 08 Mar 2008 20:19:46 GMT
In message <fe1bfd7c4f.Andrew@xxxxxxxx>
Andrew <aw29009@xxxxxxxxx> wrote:
> In message <7467df7c4f.Alan.Adams@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> Alan Adams <alan.adams@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>>>>>> Just fitted a KVM between a RiscPC and Iyonix. Whilst I Can switch
>>>>>> between using Scroll-Lock-<2> the Iyonix freezes, both the OS and the
>>>>>> mouse. I can use the RiscPC however with the mouse and keyboard. Has
>>>>>> anybody any experience with this?
>>>>
>>>>> Using a My Hopper box (from STD), I've found that the order in which
>>>>> the various machines are connected seems to be important (why?).
>>>>
>>>>> Anyway, having a RiscPC, an Iyonix and Windows PC, I've found that
>>>>> connecting them to ports 1, 2, and 3, in that order, appears to have
>>>>> removed the problems on starting.
>>> I could try swapping the cables around as it is only 2 port.
>>
>>>>
>>>> What make and type are you using? USB and PS2 versions behave very
>>>> differently, and some makes are problematic. For example at work there
>>>> is a Belkin USB which is very reluctant to connect to a pair of
>>>> Windows2003 servers - if it is disconnected the servers have to be
>>>> rebooted to regain connection.
>>>>
>>> This is a Belkin 2-port switch with in-built PS/2 and VGA cables.
>>
>> Presumably you then connect to a PS2 to USB adapter before the Iyonix?
>> These can also give trouble.
> Yes. However, the USB to PS/2 adaptors that came with the Iyonix both
> have a picture of a mouse on the top. Does that mean they're somehow
> different to one for a keyboard?
I suspect they are specific to a mouse.
The adapter I had from Castle has a keyboard ps2 port and a mouse ps2
port, and combined both into a USB connector. On the RPC with Unipod,
the adapter on its own shows up as a mouse and a keyboard. I gave up
on it because with the ps2 KVM running through it, I got random stray
characters in the keyboard buffer when I moved the mouse, even if
there was no cable in the keyboard port of ther adapter.
I think the adapter has to emulate a mouse or a keyboard, so using a
mouse adapter with a keyboard would seem unlikely to work. I could be
wrong though. Perhaps somebody who uunderstands the internals of USB
could enlighten us?
I changed to a USB KVM, a Rextron from CJE, which works very nicely.
>> In an earlier thread about KVM issues, I seem to recall that there is
>> some difference between the various USB ports - something about when
>> they get initialised during startup. It might be worth trying
>> different USB ports on the Iyonix.
>>
> The keyboard cable on the Iyonix I have in the lower socket so I put
> the keyboard cable from the KVM into that too. Swapping around didn't
> seem to change things - the computer froze until I unplugged the
> keyboad. However, I'll try again.
--
Alan Adams, from Northamptonshire
alan.adams@xxxxxxxxxxxxxxxxxxxxxxxxxxx
http://www.nckc.org.uk/
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