[Bug 1787696] [NEW] Start network option prints errior about /etc/default/rcS, fails to return to menu

[Tom Reynolds]

Public bug reported:

On 18.04.1, the 'start network' option on the recovery menu prints this
error on screen

  /lib/recovery-mode/recovery-menu: line 75: /etc/default/rcS: No such
file or directory

and gets stuck after
  ...
  [   OK   ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.
  [   OK   ] Reached target Sound Card.

Pressing Enter does nothing, pressing Ctrl-C resumes the boot.

As such, there is currently no way to start the network from the
recovery menu (other than doing it manually from the root shell), and
remounting / rw needs to be typed manually on the root prompt as well.

(Either result of this option is good to have when guiding less
experienced users through recovery for remote support.)

** Affects: friendly-recovery (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1787696

Title:
  Start network option prints errior about /etc/default/rcS, fails to
  return to menu

Status in friendly-recovery package in Ubuntu:
  New

Bug description:
  On 18.04.1, the 'start network' option on the recovery menu prints
  this error on screen

    /lib/recovery-mode/recovery-menu: line 75: /etc/default/rcS: No such
  file or directory

  and gets stuck after
    ...
    [   OK   ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.
    [   OK   ] Reached target Sound Card.

  Pressing Enter does nothing, pressing Ctrl-C resumes the boot.

  As such, there is currently no way to start the network from the
  recovery menu (other than doing it manually from the root shell), and
  remounting / rw needs to be typed manually on the root prompt as well.

  (Either result of this option is good to have when guiding less
  experienced users through recovery for remote support.)

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