On Mon, Sep 23 2019, Johan Hovold wrote: > That's correct, the driver does not support software flow control even > if the hardware seems to have some support for assisted XON/XOFF. > > Would you mind testing the below patch which may be enough to turn > sw-flow control always on. If that works, I can probably find time to > cook up a proper patch to make this configurable later this week. Hi Johan, I gave it a try, but unfortunately that patch made no difference to the behavior I was seeing. I'm happy to do whatever debugging may be helpful. Thanks! - John