[Bug 1871717] Re: spinner theme, sometimes does not render splash without output

[Paride Legovini]

I did try to add "plymouth:debug" to the kernel cmdline but no plymouth-
debug.log was generated. I did check /proc/cmdline and the parameter is
there. `journalctl -b` shows these plymouth related errors:

Apr 21 09:44:10 u plymouth[529]: 00:00:05.338 ./ply-boot-client.c:183:ply_boot_client_connect               : could not connect to /org/freedesktop/plymouthd: Connection refused
Apr 21 09:44:10 u plymouth[529]: 00:00:05.339 ./ply-boot-client.c:190:ply_boot_client_connect               : could not connect to /ply-boot-protocol: Connection refused
Apr 21 09:44:15 u plymouth[656]: 00:00:10.740 ./ply-boot-client.c:183:ply_boot_client_connect               : could not connect to /org/freedesktop/plymouthd: Connection refused
Apr 21 09:44:15 u plymouth[656]: 00:00:10.740 ./ply-boot-client.c:190:ply_boot_client_connect               : could not connect to /ply-boot-protocol: Connection refused
Apr 21 09:44:15 u plymouth[657]: 00:00:10.761 ./ply-boot-client.c:183:ply_boot_client_connect               : could not connect to /org/freedesktop/plymouthd: Connection refused
Apr 21 09:44:15 u plymouth[657]: 00:00:10.762 ./ply-boot-client.c:190:ply_boot_client_connect               : could not connect to /ply-boot-protocol: Connection refused

I am now reproducing the issue in a QEMU VM.

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https://bugs.launchpad.net/bugs/1871717

Title:
  spinner theme, sometimes does not render splash without output

Status in plymouth package in Ubuntu:
  Incomplete

Bug description:
  spinner theme, sometimes does not render splash without output

  desktop installer initrd starts plymouthd, executes show-splash, then
  casper md5check starts.

  Sometimes the progress bar and splash are shown with all the messages.

  Sometimes the screen remains black, but upon pressing ESC, one can see
  plymouth-text messages. pressing ESC again, rerenders the splash with
  casper-md5check progress bar with progress message, and file under
  check message, but not the Ctrl+C message.

  So plymouthd is there, and accepting input, but choosing not to paint
  things?

  From the 20200408 image.

  It is as if plymouth theme has a delay built in, and despite show
  splash.... it is not shown.

  When booting with plymouth:debug set, splash is rendered straight
  away.

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