[Bug 1675805] Re: Friendly recovery uses invalid font

[Alkis Georgopoulos]

I'm attaching a one-liner patch that calls `udevadm trigger` from the
system service file instead, which is the same that the friendly-
recovery upstart job does as well.

Note that there were 2 errors in the service file:
1) ExecStartPre=-/bin/udevadm settle
The path there is wrong, because udevadm is in /sbin. The attached patch solves this as well as the font issue, in one line.

2) ExecStartPre=-/bin/sh -e 'while systemctl list-jobs | grep -v friendly-recovery | grep -q running; do sleep 0.2; done'
The author there meant "sh -c", to run the command, instead of "sh -e". This is a separate issue. But since it's in the same .service file, maybe we can SRU both issues with one upload.
I suggest that this line is removed completely because it just hangs if "sh -c" is used.

** Patch added: "Call udevadm trigger from friendly-recovery.service"
   https://bugs.launchpad.net/ubuntu/+source/friendly-recovery/+bug/1675805/+attachment/4844600/+files/friendly-recovery.patch

** Tags added: patch

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https://bugs.launchpad.net/bugs/1675805

Title:
  Friendly recovery uses invalid font

Status in friendly-recovery package in Ubuntu:
  New

Bug description:
  There are a lot of similar bug reports for this, but they all seem stalled.
  Here's a specific issue with a proposed one-line patch that works.

  When I boot my Ubuntu 16.04.2 and select recovery mode, the menu text
  is unreadable, showing boxes instead of characters, like console-setup
  hasn't ran, while it did.

  Then I edit /lib/recovery-mode/recovery-menu and insert the following line at the top:
  udevadm trigger && udevadm settle -t 10

  After I reboot, the problem is gone.

  I'll attach two screenshots, "before.png" and "after.png", showing the
  issue.

  Some info for my localization setup; but it shouldn't matter, it should be the same in any locale.
  $ cat /etc/default/locale 
  LANG="el_GR.UTF-8"
  $ cat /etc/default/console-setup 
  ACTIVE_CONSOLES="/dev/tty[1-6]"
  CHARMAP="UTF-8"
  CODESET="guess"
  FONTFACE="Fixed"
  FONTSIZE="8x16"
  VIDEOMODE=

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