On serial link type: echo hello >> /hello.txt Via ssh: ls -l hello.txt # is it 6 bytes? (text+newline) cat /hello.txt # Anything in /var/log/messages or other logs? Kind regards, Christer On Thursday 14 December 2023 02:45:31 Robert Moskowitz wrote: > I have Centos 7 arm32 running on a Cubieboard and I am logged in as root > on its serial uart from another system. > > On that system I use > > screen /dev/ttyUSB0 115200 > > Well it was working well for a couple days, but now only garbage comes > across. Something messed up the serial link. > > pulling the usb cable to the usb/serial adapter does not reset things. > > I can ssh into the server and see root logged into ttyS0 > > How do I reset that serial port so that I can work on the system? > > thanks > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >