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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.
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment
--
console port speed impossible to set on ttyUSB0
https://bugs.launchpad.net/bugs/1571500
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