On Tue, 2020-05-19 at 14:54 +0200, Greg KH wrote: > CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. > > > On Tue, May 19, 2020 at 12:14:55PM +0000, Joakim Tjernlund wrote: > > Whenever we connect a Linux laptop(4.19.118) to our ttyACM serial gadget we can see som strange > > chars appearing in our gadget: > > 03�`3�03�x�x(in hex: 3033 efbf bd60 33ef bfbd 3033 efbf bd78 efbf bd78) > > They appear witch c.a 1 sec in between. > > I assume it is the laptops ACM driver emitting those, but why? Can these chars be turned off? > > It's a program on your laptop probing the device. Usually modemmanager > or something like that. Ahh, makes sense. Now I need to see how to turn it off(NetworManager pulls it in) ... Jocke
