Public bug reported:
I have recently vetted the lightdm plymouth handling code to confirm
that it is capable of a flicker-free hand-off from plymouth in the same
way that gdm was. We should have updated plymouth pre-beta to turn on
flicker-free handling; since this didn't get done, this is now a freeze
exception request.
This is an important part of the Ubuntu desktop boot experience, and not
having it enabled constitutes a regression from natty, so I think a
freeze exception is warranted. However, since lightdm has been the
default DM for much of the oneiric cycle, we've not been getting any
testing of the flicker-free code path in plymouth or the DRM drivers so
there's definitely some risk of regression from turning it on as well.
As such, I don't believe we should enable this in the archive until the
plymouth change has been tested with at least one system each of the
intel, nouveau, and radeon drivers, both with and without cryptsetup
installed (due to cryptsetup's effect of pulling plymouth into the
initramfs, resulting in an earlier start).
I have personally tested this with the intel+cryptsetup case only.
** Affects: plymouth (Ubuntu)
Importance: Medium
Status: Incomplete
** Affects: plymouth (Ubuntu Oneiric)
Importance: Medium
Status: Incomplete
** Changed in: plymouth (Ubuntu)
Status: New => Incomplete
** Changed in: plymouth (Ubuntu)
Importance: Undecided => Medium
** Also affects: plymouth (Ubuntu Oneiric)
Importance: Medium
Status: Incomplete
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https://bugs.launchpad.net/bugs/849954
Title:
FFe: enable flicker-free boot with lightdm
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