[BRLTTY] BRLTTY, HT Active Braille on Raspberry pi 2, USB
Mario Lang
mlang at delysid.org
Tue Mar 29 09:45:03 EDT 2016
Lars Bjørndal <lars at lamasti.net> writes:
> It turned out that the package in question isn't related at all to
> the BRLTTY crash problem. Instead, BRLTTY crashes if I connect the Active
> Braille to the USB port on the rpi and then starts BRLTTY.
>
> However, BRLTTY works with a bluetooth conneciton to the device. But
> sometimes the bluetooth doesn't work anymore until I reinit the
> bluetooth conneciton by repairing the device.
On Linux, occasionally, my Bluetooth stack forgets about the established
pairing to my Braille Star. In that case, I can not even repair the
device. I have to manually delete all state files in /var/lib/blueooth
and let the bluetooth stack recreate them. This is very anoying. It
has hit me at least two times. Once with Bluetooth 4, and once with
Bluetooth 5. I am suspecting the Linux Bluetooth stack to be buggy in a
subtle way.
> If the USB conneciton problem could be fixed, I'd happily provide log
> information. Please tell me what you need and how to get the needed
> information.
A backtrace would be very helpful.
I'd try to run brltty in gdb, and trigger the crash.
If gdb comes back with a prompt, enter "bt" to see the backtrace and
send that over.
--
CYa,
⡍⠁⠗⠊⠕
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