Hello Nicolas, Nicolas Pitre schrieb am 13.07.2014, 14:49 -0400: >On Sun, 13 Jul 2014, Sebastian Humenda wrote: > >> Dave Mielke schrieb am 11.07.2014, 18:06 -0400: >> >> >Are you saying that pressing caps lock - which you've redefined to be >> >escape >> >and expect to be escape - is still acting as caps lock, or are you saying >> >that >> >caps lock seems to just go on for no obvious reason? >> In a way the latter: Caps lock is suddenly activated and cannot be >> deactivated: >> >> 1. Before logging in, caps lock is still caps lock, this is changed when >> logging in. In very rare cases, all numbers occur as if I had pressed >> them >> with a shift key. All letters are still lower case, but the numbers are >> gone. Neither with or without shift brings them back, I get only the >> special >> characters. Pressing caps lock doesn't change that either. >> 2. When logged in, caps lock is replaced through escape, since caps lock is >> a >> key I don't like. BRLTTY works with this redefined key nevertheless. >> When I >> restart BRLTTY for whatever reason, it happens (again rarely), that caps >> lock is activated, I cannot switch TTY's and the key cannot be >> deactivated. >> >> >What you're describing is very odd since there's ultimately no difference >> >between the handling of keyboard events and the handling of braille device >> >key >> >events. >> Is there no difference between retrieving keyboard key presses from the >> kernel >> and receiving device key presses? Maybe it's a bug elsewhere? > >It happened to me very rarely that a braille key press is never >released, or more likely that the release event was lost. This is >always on my laptop and not on my faster desctop PC. And only when >connected over USB. > >On that laptop I don't use keyboard keymaps because normal key presses >will get into auto-repeat mode occasionally even if I don't hold them >down. This manifests itself as some repeated characters when typing >which is very annoying. I suppose this is due to the key release event >not forwarded back quickly enough in those cases e.g. before the >auto-repeat delay managed by the kernel expires. > >At least on this laptop, keyboard key management appears more >difficult than device key management. I can confirm that for my old (not anymore existing and very slow) laptop and for the (also quite slow) Raspberry Pi. I experienced quite often repeated characters which made working very impossible. I also turned off the key table in this case.
I have a similar issue on one laptop with a Pacmate braille display using the braille navigation keys, but I believe there that this is due to incorrectly working hardware, because a reconnect of the isplay resolves the issue. Sebastian -- Web: http://www.crustulus.de | Blog: http://www.crustulus.de/cgi-bin/blog.cgi?de-0 Freies Latein-Deutsch-Wörterbuch: http://www.crustulus.de/freedict.de.html FreeDict: Free multilingual dictionary databases - http://www.freedict.org
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