agetty is running and it got the "57600" option. systemd is only involved in starting that job, it does not actually set up ttys by itself. So removing the systemd task.
Can you try to stop that job and call agetty manually with the same parameters? Does that work? If so, then apparently something else is interfering with the serial parameters at boot/when the device appears. If it also does not work, this sounds like a bug in agetty. Reassigning to util-linux as you are using agetty, not mgetty. ** No longer affects: systemd (Ubuntu) ** Package changed: mgetty (Ubuntu) => util-linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1571500 Title: console port speed impossible to set on ttyUSB0 Status in util-linux package in Ubuntu: New Bug description: I want to add a console port on a Ubuntu machine to be able to access it from a terminal server. This machine has no serial port but lots of USB ports (like most nowadays). I use a USB-to-serial adapter to have the ttyUSB0 up and listening. I copied /lib/systemd/system/serial-getty@.service to /lib/systemd/system/serial-getty@ttyUSB0.service and set the speed to 57600 +++++++++++ [Service] ExecStart=-/sbin/agetty --keep-baud 57600 %I $TERM +++++++++++ the service status shows the right speed +++++++++++ $ sudo systemctl status serial-getty@ttyUSB0.service ● serial-getty@ttyUSB0.service - Serial Getty on ttyUSB0 Loaded: loaded (/lib/systemd/system/serial-getty@ttyUSB0.service; enabled; vendor preset: enabled) Active: active (running) since 月 2016-04-18 14:07:30 JST; 58min ago Docs: man:agetty(8) man:systemd-getty-generator(8) http://0pointer.de/blog/projects/serial-console.html Main PID: 3017 (agetty) CGroup: /system.slice/system-serial\x2dgetty.slice/serial-getty@ttyUSB0.service └─3017 /sbin/agetty --keep-baud 57600 ttyUSB0 vt220 +++++++++++ Even so, I can't log in from the serial port at a speed other than 9600... With such settings I shouldn't even be able to get a right answer at 9600bps, only garbage. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1571500/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
