[Bug 1442405] Re: plymouth locks console termios, breaking serial consoles

[Steve Langasek]

> I have /etc/init/ttyS1.conf that's more or less the same as all the standard /etc/init/ttyN.conf files.
What does "more or less the same" mean?  What is the exact content of this file?

The /etc/init/ttyN.conf files are *not* all the same, precisely because
plymouth and tty1 conflict with each other in the graphical VT case.

The answer to the question, "what is supposed to tell pymouth to dismiss
its splash screen", is /etc/init/plymouth-stop.conf.  Your
/etc/init/ttyS1.conf probably has a race with this upstart job.

** Changed in: plymouth (Ubuntu)
       Status: New => Incomplete

** Changed in: upstart (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1442405

Title:
  plymouth locks console termios, breaking serial consoles

Status in plymouth package in Ubuntu:
  Incomplete
Status in upstart package in Ubuntu:
  Invalid

Bug description:
  I have a more or less standard non-graphical Ubuntu 14.04 server
  installation.  I boot with console=ttyS1,115200, and I have
  /etc/init/ttyS1.conf that's more or less the same as all the standard
  /etc/init/ttyN.conf files.

  The serial console login doesn't work because plymouth seems to think
  it's showing its bootsplash and it locks the termios settings using
  TIOCSLCKTRMIOS.  This completely breaks /bin/login, which *requires*
  working buffered mode.

  I have no idea what mechanism is supposed to tell Plymouth to dismiss
  its splash screen when boot up is done, but it's clearly broken.  What
  gives?

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