[BRLTTY] serial port problem?

[Mario Lang]

Hideyuki Hayashi <taro.hayashi at nifty.ne.jp> writes:

> On Fri, 19 Jun 2009 16:51:11 +0200
>   Mario Lang <mlang at delysid.org> wrote:
>> Does this machine have several serial ports?  If so, did you try to
>> connect the cable to the other one as well?
>
>   No, this box has only 1 serial port.
>
>> Can you check "dmesg" output to make sure the kernel did not report any
>> errors during initialisation of the serial port?
>> 
>> I have output like this:
>> [    0.971073] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
>> [    0.971659] 00:08: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
>
>   My case is:
>
> [    1.469295] Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
> [    1.469450] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> [    1.470113] 00:09: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> [    1.470312] serial 0000:00:1f.6: enabling device (0000 -> 0001)

Hmm, this looks fine.  I seem to be out of ideas.
Do you have any other serial devices you could test the port with?

Does your braille display have several connectivity possibilities, like
USB and serial, or serial and bluetooth?  Maybe you set it to use the
other port (this can happen with a few devices I know, like
the HandyTech Braille Star or the ALVA Braille Controller).

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