[Bug 1571500] Re: console port speed impossible to set on ttyUSB0

[Martin Pitt]

It actually seems like --keep-baud is doing exactly what it's supposed
to:

       -s, --keep-baud
              Try to keep the existing baud rate. The baud rates from the command line are used when agetty receives a BREAK character.

So no wonder that it doesn't switch to 57600 right away :-)

** Changed in: util-linux (Ubuntu)
       Status: New => Invalid

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Title:
  console port speed impossible to set on ttyUSB0

Status in util-linux package in Ubuntu:
  Invalid

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 at .service to
  /lib/systemd/system/serial-getty at 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 at ttyUSB0.service
  ● serial-getty at ttyUSB0.service - Serial Getty on ttyUSB0
     Loaded: loaded (/lib/systemd/system/serial-getty at 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 at 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.

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