[Bug 1016170] Re: No login screen unless "quiet splash" removed from boot line

[Barry Warsaw]

Setting debug=all doesn't provide anything useful.   When it freezes, it
still freezes before there's any output.  When it doesn't freeze, I get
all the expected debugging output to the console.

About the only other bit of information I can provide is that when it
does freeze, the keyboard stays backlit.  When it doesn't freeze, the
keyboard backlight goes out.

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https://bugs.launchpad.net/bugs/1016170

Title:
  No login screen unless "quiet splash" removed from boot line

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  I'm not entirely sure this is a Plymouth bug, but here is what's going
  on.

  MacBook Pro 1,1 running latest Quantal.

  This machine was running 12.04 just fine, then I upgraded it to 12.10.
  Now, whenever I boot it, I just end up with a black screen, no login
  screen, no apparent cursor, no response to keyboard.

  If, at the grub screen, I edit the boot line and remove "quiet
  splash", the machine boots to its login screen, although it sometimes
  takes quite a long time.  I don't see much on the console output that
  indicates what's going on though.

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