[Bug 519123] Re: Cannot boot 64-bit live CDs

[Thomas Hood]

** Summary changed:

- Cannot boot 64-bit Karmic Live CDs
+ Cannot boot 64-bit live CDs

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Title:
  Cannot boot 64-bit live CDs

Status in “casper” package in Ubuntu:
  Confirmed

Bug description:
  I cannot boot the 64-bit Live CDs for Karmic ubuntu, xubuntu, or
  kubuntu. When I attempt to boot, I get the language select screen,
  then the menu. When I choose either Run... or Install..., it goes
  immediately to a black screen with cursor in the upper left, and
  hangs. There is no response to CTRL-ALT-DEL or ALT-SYSRQ-REISUB; it
  requires powering down by turning off the power switch. The same
  problem exists with Lucid (which I realize is alpha) cds. The problem
  also exists with the most recent Sidux live CD (Sidux is another
  debian-sid distribution, using the 2.6.32 kernel). Note that I CAN
  boot with an installed karmic (2.6.31) and sidux (2.6.32)  64-bit
  systems, and with a karmic system upgraded to 2.6.32 kernel.
  Attempting to upgrade the karmic system to lucid produces a system
  that fails after the udev warnings, apparently unable to mount the
  file system.

  This system is:
  Dell XPS630i, 64-bit, Intel Q9550 core2dual quad processor, 8gb ram, NVIDIA board, dual NVIDIA 9800GT video cards, no onboard video.

  What I have done:
   Verified MD5SUM of downloads and burns.
   Attempted removing the slave video card, does not help.
   Tried unplugging one or both hard disks, does not help.
   Tried booting off USB with all CD and hard drives unplugged, does not work.
   Tried the 32-bit CDs, these do boot though I have not tested them extensively.
   No RAID is in use on this system - RAID disabled in BIOS.
   Returning BIOS to default settings, does not help. No overclocking or overvoltage in use.
   Tried the Alternative CDs, they hang in the same spot.
   Tried the available options in F4 and F6, removing "splash", etc, does not help.

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