[BRLTTY] BRLTTY with keytable enabled sometimes locks keys

[Sebastian Humenda]

Hello Dave,

Dave Mielke schrieb am 01.08.2014, 21:20 -0400:
>I've finally managed to reproduce your shift lock on brltty restart problem. 
>While I haven't yet figured out what to do about it, I can at least tell you 
>how to avoid it.
>
>The problem occurs if you happen to be holding down the shift key when brltty 
>starts. More specifically, it happens if you're holding down the shfit key 
>when, shortly after brltty starts, it begins to monitor the keyboard. The same 
>is true, by the way, if you're holding down some other modifier (like the 
>control key) at that moment. 
>doing any typing until brltty has started. It's just a guess, but it could be, 
>for example, due to your two-second sleep between the kill and the restart, 
>that you were already typing ahead to save some time.
I am glad that you were able to reproduce the problem. It might be that the
sleep is a problem there, but another user has also this problem and I think he
doesn't use a sleep in between.
However , I could imagine that I already tried to read the screen using Shift+Up
/ Shift+Down. It also explains why it happens with the shift key and seldom with
the control key.

I was sure that  I was able to release the held shift key key with a sequence,
but never managed to remember which key combination it was. Thanks for finding
it out :-).

Thanks for your work
Sebastian
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