[Bug 1169621] Re: encrypted LVM desktop does not boot with cirrus driver (no password prompt)

[Hans de Vries]

With Lubuntu 14.10 and Radeon same problem. Work around by deleting the
splash option in the Grub command line.

Edit /etc/default/grub
Change:
#GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX_DEFAULT="quiet"

Now an old fashion text message appears and the passphrase can be
entered.

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https://bugs.launchpad.net/bugs/1169621

Title:
  encrypted LVM desktop does not boot with cirrus driver (no password
  prompt)

Status in “plymouth” package in Ubuntu:
  Confirmed

Bug description:
  I'm not sure if this is a plymouth bug or xserver-xorg-video-cirrus,
  but if I install 13.04 on a kvm VM (via libvirt) with the cirrus video
  driver using the livecd (server install is ok) and choose to encrypt
  the entire disk, on reboot I get a flash of purple then it goes to a
  black screen. I thought it might be just that the prompt was not
  displayed, but typing the password simply echoes the password to the
  screen and does not open LUKS.

  Any of the following works around the issue:
   * use the vmvga driver instead of cirrus
   * adding nomodeset to the kernel command line
   * removing splash from the kernel command line

  If I remove 'quiet', then the boot stops (see attached screenshot).

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