losing 'power" as soon as I load lirc_serial

[Chris <ch...@si...>]

Hello List,

I'm trying to create my own ir receiver following
http://www.lirc.org/receivers.html

Added a little led just for fun :-)

But now my problem. If I connect this device the led lights, so there is
power.

I try the following command
setserial /dev/ttyS0 uart none

When i load the lirc_serial module i have no errors and the following in
my syslog

Jan 10 20:54:56 localhost kernel: lirc_serial: auto-detected active low
receiver
Jan 10 20:54:56 localhost kernel: lirc_dev: lirc_register_plugin:
sample_rate: 0

But the led goes out... I loose the +10V on RTS.
As soon as I unload the modules (lirc_serial and lirc_dev) and run 
'setserial /dev/ttyS0 autoconfig' the led goes on again.

mode2 doesn't give any output.

Can anyone point me in the right direction how to solve this ?

Thanks in advance

Chris