Wow, was I long winded, sorry about that.
What I discovered regarding the loss of plymouth's "quiet splash", both
after correcting the UUID problem created by resizing SWAP, and also
after resizing/moving a Lucid root "/" partition was that, in both
instances, simply forcing a reprofile of ureadahead by removing the
"pack" files in /var/lib/ureadahead and rebooting. Specific recap:
Test case #1) I had resized/moved the Lucid root partition and lost the
"quiet splash". I had only the black screen with perhaps 1 second of
"plymouth" and then the login screen, and no "plymouth" at all on
shutdown or reboot. I had not created an /etc/initramfs-
tools/conf.d/splash w/FRAMEBUFFER=y. After forcing a reprofile of
ureadahead by removing the "pack" files in /var/lib/ureadahead and
rebooting all had returned to normal. I have rebooted numerous times and
all is well.
Test case #2) I had resized a SWAP partition due to hardware changes and
after correcting the UUID's in /etc/fstab and /etc/initramfs-
tools/conf.d/resume, and updating initramfs, I was still not able to
restore the "quiet splash". Just as above I only got a black screen with
perhaps 1 second of "plymouth" and then the login screen, and no
"plymouth" at all on shutdown or reboot.
I then created an /etc/initramfs-
tools/conf.d/splash w/FRAMEBUFFER=y which restored "plymouth" but I
really wanted to restore things to their original state. So having
succeeded in test case #1 I went ahead and removed the new /etc
/initramfs-tools/conf.d/splash, rebooted to be sure I hadn't totally
broken anything and then once again forced a reprofile of ureadahead.
Voila, success again :^)
So I guess that if someone had a "quiet splash" at one time and lost it
for some reason, whether repartitioning or anything else, it's certainly
worth trying to force a reprofile of ureadahead. I can't imagine it
doing any harm.
--
X server starts before Plymouth, or a very short time after (no or brief splash)
https://bugs.launchpad.net/bugs/540801
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