Comment 19 for bug 555214

Here we go:
Step 1: zcat /boot/initrd.img-$(uname -r) | cpio -t | grep plymouth
36924 blocks

Step 2: I reinstalled all Plymouth packages that I could find via Synaptics.

Step 3: Then I booted with the plymouth:debug=file:/var/log/plymouth.log option, the log-file is attached to the comment.
Actually during this boot I got a disc-check and the splash screen showed up during disc-check!

Step 4: I booted again with the plymouth:debug option in order to make sure that the splash was not triggered by the disk-check.
Result: The splash did actually show up for a couple of seconds just before the gdm-login screen appeared!

Step 5: I wondered if the problem is fixed (perhaps due to step 2?) and reboot again. This time without the plymouth:debug option.
Result: No splash shows up.

This really makes me wonder what triggers that behaviour?
Could it be that there is a 20 seconds delay required before plymouth shows a splash on my computer - and I just added the required extra seconds by the plymouth:debug option or the disc-check?

Anyway this laptop requires roughly 20 seconds before showing the gdm-screen. Which makes my computer look like the exact use case for a splash screen.

Any suggestions?