ubuntu-x-swat team mailing list archive

[yota <59417@xxxxxxxxxxxxxxxxxx>]

First of all thank you for your answer.

I'm really sorry, bringing up my specific problem (related to the kvm)
seems to have diverted the attention from the core business of this bug
report.

IMHO the problem at stake here is that "scroll lock doesn't work under X", which is true even without KVMs (in fact it doesn't work on the pc that I'm writing from, which is not connected to a KVM).
I had the bad idea to back-up my reasoning by illustrating that (I believe) this ultimately has consequences on many KVMs, but please forget that and just focus on restoring scroll lock functionality "per se".

AFAIK I've never seen a single ubuntu machine where scroll lock works
properly under X and, considered that, this bug report seems fine to me.

Hoping to help I'll try to describe what should be the expected functionality of the scroll lock key.
On a VT:
-launch a command that produces a very verbose output, say "find /"
-press scroll lock and notice that the scroll pauses and the "scroll lock" led on the keyboard lights up

Under X :
-open a terminal and launch a command that produces a very verbose output, say "find /"
-press scroll lock and notice that perfectly nothing happens (no led, no lock)

This is not something hardware-related, and fragmenting the same problem
under lots of potentially unrelated perspectives desn't seem to be
productive.

For the sake of completeness, if you are still wondering why your KVM works and mine doesn't, it probably depends on how they are detecting toggle condition.
Your KVM probably is smart enough to be aware of the actual keys pressed on the keyboard and so it switches when scroll lock is tapped two times in a small amount of time.
On the other hand mine, which is a dumb KVM, has no idea of what are those strange electric signals going over those wires inside him... it just switches if the "scroll lock" led flashes. (so no led->no toggle)

If scroll lock worked as it should both (and hopefully all) KVMs would
operate correctly.

Bottom line: please forget everything I said about KVMs and just fix
scroll lock under X.

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https://bugs.launchpad.net/bugs/59417

Title:
  Scroll lock does not work in X