[Bug 1572874] Re: plymouth is disabled after upgrade from trusty due to missing "splash" kernel arg

[Martin Pitt]

I was wondering how trusty's plymouth handles the kernel command line,
as the "splash" option isn't evaluated in the upstart jobs. It seems
this is done in src/main.c, plymouth_should_show_default_splash():

 if (command_line_has_argument (state->kernel_command_line, "splash"))
    {
      ply_trace ("using default splash because kernel command line has option \"splash\"");
      return true;
    }
[...]
  ply_trace ("no default splash because kernel command line lacks \"splash\" or \"rhgb\"");
  return false;

This seems to decide between the default (graphical) splash or the text
mode  where it shows detailed messages. AFAICS, ubuntu-gnome-default-
settings does not fundamentally change this.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to plymouth in Ubuntu.
https://bugs.launchpad.net/bugs/1572874

Title:
  plymouth is disabled after upgrade from trusty due to missing "splash"
  kernel arg

Status in plymouth package in Ubuntu:
  Invalid
Status in plymouth source package in Xenial:
  In Progress

Bug description:
  I upgraded a mostly clean install of 14.04.4 -> 16.04 (Ubuntu GNOME).
  Plymouth is never displayed on the upgraded system.

  This is due to the grub config not having the "splash" kernel
  commandline argument currently

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: grub2-common 2.02~beta2-36ubuntu3
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Thu Apr 21 00:47:49 2016
  InstallationDate: Installed on 2016-02-25 (55 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: Upgraded to xenial on 2016-04-21 (0 days ago)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1572874/+subscriptions