As I can’t really make up my mind which keyboard I like best, I work alternately with three keyboards on my Mac:
- An IBM Model M (1391511, dutch) from 1992 with a Soarer PS / 2 → USB adapter
- an Apple Extended Keyboard II © 1989 model M3501 (dutch) with ADB → USB adapter from Tinkerboy
- a Logi Craft keyboard
For all keyboards I use a modified layout with Ukulele and Karabiner. This all works fine except for one thing. (By the way: the Dutch key-layout of an Apple keyboard is practically the same as that of a US key-layout.)
The Apple Extended Keyboard II has a problem with two specific key combinations:
- d e
- l k j n
d e
If the d or e is pressed, the other letter will not appear. So for example d pressed, no e. Or the e pressed no d. All other letters will appear. So the e pressed, and for example a w, r, s or whatever is no problem. The same goes for the d.
l k j n
With the l the problem is with three other letters.
- If j, k or n is pressed, the l cannot appear.
- When l is pressed, j, k and n cannot appear. All other letters can be typed. So the l and e.g. u p y t h is not a problem.
- If the n is pressed and then the l sometimes a , (comma) appears
- If the k is pressed and then the l sometimes a return is given.
This is a particular problem as I type at a reasonable speed. Sometimes one key is not completely released before the other key is pressed. This is no problem at all except for the aforementioned. As a result, a relatively large number of incorrect words appear. That has a delaying effect.
I’ve also performed the test under Windows with the same result.
Is this a known problem and if so what is a possible solution? Or is it ‘by design’ for these key-combinations? A test with an Apple Design Keyboard doesn’t show the same behavior. Thanks in advance for your ideas.
Rheinpfeil