mjhjmtu

I setup an initramfs BeagleBone Black with the goal of using the open source Plymouth package to display a boot splash early on in the boot on the BeagleBone's /dev/fb0 HDMI output.

I am trying to configure it according to these instructions:
https://wiki.ubuntu.com/Plymouth

When I boot, the initramfs runs the shell and I manually run plymouthd. It immediately fails with the following error:

sh-4.4# export FRAMEBUFFER=y
sh-4.4# env
ACTION=add
OLDPWD=/
PWD=/
HOME=/
FRAMEBUFFER=y
TERM=linux
SHLVL=1
_=/usr/bin/env
sh-4.4# /sbin/plymouthd --mode=boot
plymouthd: could not setup basic operating environment: No such file or directory

My initramfs contains the following plymouth related files:

sh-4.4# find . -name plymouth*
./etc/plymouth
./etc/plymouth/plymouthd.conf
./sbin/plymouthd
./bin/plymouth
./var/spool/plymouth
./var/lib/plymouth
./usr/share/plymouth
./usr/share/plymouth/plymouthd.defaults
./usr/sbin/plymouth-set-default-theme
./usr/lib/plymouth
./usr/lib/dracut/modules.d/50plymouth/plymouth-pretrigger.sh
./usr/lib/dracut/modules.d/50plymouth/plymouth-populate-initrd.sh
./usr/lib/dracut/modules.d/50plymouth/plymouth-newroot.sh
./usr/lib/dracut/modules.d/50plymouth/plymouth-emergency.s

The source code contains the print message here:

/* before do anything we need to make sure we have a working
 * environment.
 */
 if (!initialize_environment (&state)) 
 if (errno == 0) 
 if (daemon_handle != NULL)
 ply_detach_daemon (daemon_handle, 0);
 return 0;
 

 ply_error ("plymouthd: could not setup basic operating environment: %m");
 if (daemon_handle != NULL)
 ply_detach_daemon (daemon_handle, EX_OSERR);
 return EX_OSERR;

Which relates to:

static bool
initialize_environment (state_t *state)

 ply_trace ("initializing minimal work environment");

 if (!get_kernel_command_line (state))
 return false;

 if (!state->default_tty)
 if (getenv ("DISPLAY") != NULL && access (PLYMOUTH_PLUGIN_PATH "renderers/x11.so", F_OK) == 0)
 state->default_tty = "/dev/tty";
 if (!state->default_tty) 
 if (state->mode == PLY_MODE_SHUTDOWN)
 state->default_tty = SHUTDOWN_TTY;
 else
 state->default_tty = BOOT_TTY;

 ply_trace ("checking if '%s' exists", state->default_tty);
 if (!ply_character_device_exists (state->default_tty)) 
 ply_trace ("nope, forcing details mode");
 state->should_force_details = true;

 state->default_tty = find_fallback_tty (state);
 ply_trace ("going to go with '%s'", state->default_tty);
 
 

 check_verbosity (state);
 check_logging (state);

 ply_trace ("source built on %s", __DATE__);

 state->keystroke_triggers = ply_list_new ();
 state->entry_triggers = ply_list_new ();
 state->entry_buffer = ply_buffer_new ();
 state->messages = ply_list_new ();

 if (!ply_is_tracing ())
 redirect_standard_io_to_dev_null ();

 ply_trace ("Making sure " PLYMOUTH_RUNTIME_DIR " exists");
 if (!ply_create_directory (PLYMOUTH_RUNTIME_DIR))
 ply_trace ("could not create " PLYMOUTH_RUNTIME_DIR ": %m");

 ply_trace ("initialized minimal work environment");
 return true;

How can I make this work? Thanks.