[BRLTTY] Status display
Lars Bjørndal
lars at lamasti.net
Sun May 1 03:44:36 EDT 2016
Please note that I've posted questions about two different problems. The status display was due
to incorrect system time configuration, and that's solved.
[Nicolas Pitre]
> On Sat, 30 Apr 2016, Mario Lang wrote:
>
> > Lars Bjørndal <lars at lamasti.net> writes:
> >
> > > After more digging, I find that the problem occures on a Raspberry pi
> > > only, and not on a pc that I tried.
> >
> > This confirms my original guess, it is an ARM/Kernel/rpi thing.
> >
> > I am not exactly sure if it provides useful extra information, but one
> > thing to try would be to use the USB logging fascilities of the kernel.
> > Maybe Nicolas can chime in here to let us know what we can try to narrow
> > this down, IIRC he does (or did?) ARM kernel development?
>
> Istill do. However, time handling is for the most part architecture
> independent.
Mario here referes to a problem I posted under the subject `BRLTTY, HT
Active Braille on Raspberry pi 2, USB'. Using BRLTTY with a Handy Tech
Active Braille connected via USB on a Raspberry pi 2b, with Fedora 22
ARM, is really slugish.
> I just built and tested BRLTTY natively on a RPI running latest Raspbian
> here and everything just works, including the time display with the
> proper time zone.
>
> One thing to remember, though, is that the RPI has no battery-----backed
> real time clock. That means it needs access to the internet to set the
> current time, or you must set it manually, on every reboot.
>
> > On a pragmatic note, Lars, just move to bluetooth for the time being,
> > that should work, does it?
Yes, Active braille works perfectly on bluetooth. I need USB for
emergency situations only, now and then.
> I don't think the displayed time will be any different.
Nicolas, do you have access to the thread I mentioned and have any
ideas on what can be the connection/communication problem?
Thanks and regards, Lars
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