Key strokes in Windows/Linux

Hugh Newbury · External Since: Jul 02, 2004 Posts: 31

Hi:

I need to know if there's a key stroke sequence in Linux that reproduces
the 'Scroll Lock' in Windows. I carelessly bought a Linksys KVM device
that needs this keystroke to change from PC1 to PC2. No doubt it works
in Windows, but it doesn't in Linux. Any help gratefully received.

TIA

Hugh

--

Hugh Newbury

Running Linux Suse 10.1 in deepest Dorset

Andy Burns · External Since: Nov 19, 2006 Posts: 60

On 28/06/2007 12:42, Hugh Newbury wrote:

> I need to know if there's a key stroke sequence in Linux that reproduces
> the 'Scroll Lock' in Windows. I carelessly bought a Linksys KVM device
> that needs this keystroke to change from PC1 to PC2.

Eh?

Normally the KVM sits between the keyboard and the PCs so it sees the
scancodes direct from the keyboard and switches as required, they don't
typically need any OS support, they'll work in BIOS, DOS, windows, linux
whatever.

Hugh Newbury · External Since: Jul 02, 2004 Posts: 31

Andy Burns wrote:
> On 28/06/2007 12:42, Hugh Newbury wrote:
>
>> I need to know if there's a key stroke sequence in Linux that reproduces
>> the 'Scroll Lock' in Windows. I carelessly bought a Linksys KVM device
>> that needs this keystroke to change from PC1 to PC2.
>
> Eh?
>
> Normally the KVM sits between the keyboard and the PCs so it sees the
> scancodes direct from the keyboard and switches as required, they don't
> typically need any OS support, they'll work in BIOS, DOS, windows, linux
> whatever.
>

Then I don't understand why the Scroll Lock key led lights up in
WindowsXP and not in Suse 10.1. Harry Potter?

Hugh.

--

Hugh Newbury

Running Linux Suse 10.1 in deepest Dorset

Tim Southerwood · External Since: Apr 23, 2007 Posts: 113

Hugh Newbury wrote:

> Andy Burns wrote:
>> On 28/06/2007 12:42, Hugh Newbury wrote:
>>
>>> I need to know if there's a key stroke sequence in Linux that reproduces
>>> the 'Scroll Lock' in Windows. I carelessly bought a Linksys KVM device
>>> that needs this keystroke to change from PC1 to PC2.
>>
>> Eh?
>>
>> Normally the KVM sits between the keyboard and the PCs so it sees the
>> scancodes direct from the keyboard and switches as required, they don't
>> typically need any OS support, they'll work in BIOS, DOS, windows, linux
>> whatever.
>>
>
> Then I don't understand why the Scroll Lock key led lights up in
> WindowsXP and not in Suse 10.1. Harry Potter?
>
> Hugh.
>

Because it's the host machine that sees the scroll-lock keypress, and
changes the state of it's idea of "scroll-lock active" from 0 to 1 to 0,
then instructs the keyboard to light or extinguish the scrolllock LED to
match.

However, the KVM just sees the keypress and acts on it. It does not fiddle
with the LED though.

Many KVM's are congurable to use different keypress combinations as well.

Cheers

Tim

Hugh Newbury · External Since: Jul 02, 2004 Posts: 31

Tim Southerwood wrote:

>> Then I don't understand why the Scroll Lock key led lights up in
>> WindowsXP and not in Suse 10.1. Harry Potter?

> Because it's the host machine that sees the scroll-lock keypress, and
> changes the state of it's idea of "scroll-lock active" from 0 to 1 to 0,
> then instructs the keyboard to light or extinguish the scrolllock LED to
> match.
>
> However, the KVM just sees the keypress and acts on it. It does not fiddle
> with the LED though.
>
> Many KVM's are congurable to use different keypress combinations as well.

Now that makes a lot of sense. Thanks. I suppose I shall have to try it
in Windows and see if the KVM works there.

More later.

Hugh

--

Hugh Newbury

Running Linux Suse 10.1 in deepest Dorset