Markus Kilbinger <kilbi@rad.rwth-aachen.de> writes:

> 
> Hmm, I tried the patch, but it didn't change anything obviously. There
> are still lost chars on output decreasing dramatically the final
> transmission rate even at a serial speed down to 38400 baud.

You're losing characters on *output*?  I've never heard of this
before.  What's on the other side?  Does it have flow control enabled?