> Date: Fri, 6 Feb 2026 12:57:36 +0100 > From: Alexandr Nedvedicky <[email protected]> > > Hello, > > On Fri, Feb 06, 2026 at 12:20:20PM +0100, Mark Kettenis wrote: > </snip> > > > > What device are you using to connect to the serial port? OpenBSD does > > taking better look at drawing here [1] my device is actually NanoPC-T6LTS > on the right hand side there is USB-C(Debug-UART) label. So this what > I'm using for console. I connect using USB A-to-C. According to dmesg > the device reports itself as: > > uchcom0 at uhub4 port 1 configuration 1 interface 0 "QinHeng Electronics USB > Serial" rev 1.10/2.64 addr 4 > uchcom0: CH341 > ucom0 at uchcom0: usb0.2.00001.0 > > Trying to increasing the speed I'm seeing this error: > > lifty# cu -l usb0.2.00001.0 -s 1500000 > cu: tcsetattr: Invalid argument > > I'm using USB A-to-C cable (~20cm long) plugged to USB-A port > directly in my T-14. Not sure if it is cable or driver. I will > try to dig more details later today. May be will try my luck > with USB C-to-C
Definitely the driver. I'll have a look.
