upowerd grabs my serial adapters

[Kees Jongenburger]

Hi,

I have had this issue a few times over the last few years where
software like upowerd or modem manager starts probing a generic (FDTI
based) serial device in the hope to find a UPS or modem on the other
end.

Today it happened again and I stumbled  upon on the following debian
issue from 2010 [1] where the author thinks it is possible detect
attached devices by sending data to it.
I am an embedded developer and currently developing mostly on TI
hardware (beagelboard /beaglebone) and
also using usb2serial adapters for many things. Today a buspirate[2]
got caught by upowerd and messed up my hole setup.

For short it is dangerous to probe devices like that and I feel
punished because some random UPS firm
did not to their job well. I am loosing time figuring our why my
development board doesn't get out of reset.

Can probing generic serial devices please be disabled by default?

Greetings

[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=586751
[2] http://dangerousprototypes.com/docs/Bus_Pirate