Undetected and chattering key presses

[mondalaci]

@jwr reported:

I am pretty sure there is a rare problem with keypresses not being detected or being detected multiple times. Debouncing code might need improvement.

I've also noticed this daily, but I wasn't sure until now. Maybe the key scanner thread should be given higher priority.

[kareltucek]

Actually, I dont think key scanner is the issue. I think the problem in the new discrete event handling. First I will look into related issues that we can reproduce - that may give some insight or even solve it.

[mondalaci]

This is not an issue for me anymore.

[jwr]

Hmm. This is still very much an issue for me, but I'm using 12.0.1 (for example, typing this, I just had to delete an additional '1' that appeared at the end of that version number, and then also correct the word 'appeareed'). And I can't use anything past 12.0.1. So, it's difficult for me to confirm that the issue has been fixed.

[mondalaci]

Don't you think this issue is a duplicate of #1077?

[jwr]

No, I don't think so. I had problems described in this issue for a long time now, and I still have them with 12.0.1. These problems are an annoyance, but they don't make the keyboard unusable. Also, I never saw swapped keystrokes (not in order) with 12.0.1.

What is described in #1077 started happening (in my case) after 12.0.1, and is much more severe.

That said, perhaps the code has been reworked so much that this issue no longer applies at all, but I wouldn't know that.

[mhantsch]

I agree to what @jwr said. 12.0.1 has some (occasional) repeats, but is reasonably usable. Later versions were unusable for me; I couldn't type a single meaningful sentence.