[Bug 1038055] Re: graphics fail to initialise correctly, in kvm with cirrus graphics (after LUKS install)

[Dave Gilbert]

I'm seeing this without LUKS as well (server install using the 2012-09-01 iso); first reboot after install fails
(stick at the text mode purple screen with 0-1 dot lit); using an LVM (but no luks) install.
It did boot after about the 3rd try on one vm, and the 2nd try on the other vm, but I can see the cannot reverse vram

Note also I couldn't get a Grub menu up, which makes me wonder if it's
just the guest kernel that's to blame.

The other observation is that the VM is now getting a 1280x1024 display, while I'm sure it used to be smaller;
not sure where the larger size has come from, but perhaps that's more of a problem for the VRAM allocation
(although I think it's supposed to have 9MB so should be fine)

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https://bugs.launchpad.net/bugs/1038055

Title:
  graphics fail to initialise correctly, in kvm with cirrus graphics
  (after LUKS install)

Status in “cryptsetup” package in Ubuntu:
  Invalid
Status in “grub2” package in Ubuntu:
  Invalid
Status in “linux” package in Ubuntu:
  Confirmed
Status in “plymouth” package in Ubuntu:
  Invalid
Status in “ubiquity” package in Ubuntu:
  Invalid

Bug description:
  reproducible with ubiquity or alternate installer in KVM virtual machine:
  1) select lvm + encrypted instalation

  
  it fails to boot, in a way that I get "no video mode activated" and I cannot type the password in to unlock the drive.

  As a workaround, I had to:
  1) force reboot machine
  2) then grub options come up
  3) select recovery mode
  4) then I can enter the password using text interface
  5) resume normal boot

  Disabling splash, brings up text interface to unlock the drive &
  allows to boot.

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