[BRLTTY] Using a Raspberry pi 2 as a SSH client

[Mario Lang]

Lars Bjørndal <lars at lamasti.net> writes:

> Hello, list!
>
> On Sat, Oct 17, 2015 at 08:50:03PM +0200, Lars Bjørndal wrote:
>> I became tired of not having a usable SSH client on my Android phone. So
>> I bought a Raspberry Pi 2, a mobile charging battery bank and a bluetooth
>> and a wireless USB dongle. I installd Fedora 22 ARM and BRLTTY on it.
>> This works pretty well.
>> 
>> I have two issues, that I hope someone on this list may have solutions
>> to:
>
> [...]
>
>> - Another issue is that I can't manage to change the lines per screen
>>   and characters per line. Now, it's set to 28x74. 'stty cols 80 rows 25'
>>   outputs invalid argument for standard input, or something similar.
>
> After fiddling a bit more, I found that 'stty rows 25' is working. But
> trying to set the line length to 80, e.g. greater than 74, isn't
> possible. Do anyone know of a solution to this?

You are likely using a framebuffer driver as backend for your console.
In these situations, two things become relevant when aiming for a
certain columns/lines length: The actual screen resolution in use, and
the size of the console font currently loaded.
fbset should tell you your current screen resolution:

root at fx:~# fbset

mode "1024x768"
    geometry 1024 768 1024 768 32
    timings 0 0 0 0 0 0 0
    accel true
    rgba 8/16,8/8,8/0,0/0
endmode
                
Ignore the extra noise for now, all we're interested in is that for the
sake of this example, we have 1024x768 screen resolution.

In my /etc/default/console-setup, I have:

FONT="Lat15-Terminus16.psf.gz brl-16x8.psf"

which means I am loading a 8x16 font.  1024/8 gives 128, which is what I
currently have as screen line width:

root at fx:~# echo $COLUMNS:$LINES
128:48

If you want to achieve a certain line length, you can:
* Try to change your framebuffer resolution.
* Find a smaller or larger console font.
* Do final adjustments with stty.

A combinations of these will usually give you exactly what you want.
It just takes a bit of planning and experimentation.
For the sake of possibly sighted onlookers, it makes sense to try to
find a configuration with maximize screen resolution.  hi-res fonts just
tend to look nicer.

-- 
CYa,
  ⡍⠁⠗⠊⠕