On Tue, Aug 25, 2020 at 03:20:48PM +0000, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=208959 > > --- Comment #2 from mslade@xxxxxxxxxxxxxxxx (mslade@xxxxxxxxxxxxxxxx) --- > Please clarify what you mean by "converter" here. I was referring to the USB-serial device. > FYI to test I was just doing this: > > # stty -F /dev/ttyUSB0 1200 cs7 What is the output of "stty -a -F /dev/ttyUSB0" after this? > # dd if=/dev/ttyUSB0 bs=1|hd Try using a terminal program instead and connect the device to another USB-serial device (e.g. ftdi or pl2303) and see if you can get 7-bit words to work. You can also try enabling debugging and provide the relevant bits from dmesg when you connect, configure and read from the device: echo module mct_u232 +p > /sys/kernel/debug/dynamic_debug/control Johan
