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I've been using 11.10 32-bit for a while, and found some spare DIMMs lying around. I put them in my machine and it detected them fine, but obviously 32-bit Ubuntu couldn't.

Rather than re-install I tried to use the PAE kernel but this toasted my machine.

So I decided to just go ahead and install 64-bit version. Trouble is the LiveCD (or USB) won't boot. It loads the desktop and mouse icon before taking me to a high-res text screen that says:

Stopping System V runlevel compatibility [ OK ]

It then hangs here.

If I use the 32-bit version it loads the desktop fine!

What can I do?

My Hardware:

  • Asus P5Q Pro
  • Intel Core 2 Quad Q6600 @ 2.40GHz x4
  • GeForce 9600GT
  • 4x 1GB DDR2 RAM Modules
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  • I have a similar hardware except for my video card ( it's an ATI ) and all runs just fine with several Ubuntu versions, both 32 and 64 bit, i can suggest to re-download the iso and check for MD5 hashing checksum help.ubuntu.com/community/HowToMD5SUM help.ubuntu.com/community/UbuntuHashes
    – Micro
    Dec 5, 2011 at 12:43
  • I checked the MDS checksums on both the files I downloaded and they are correct... Dec 5, 2011 at 13:54
  • I just tried the Alternate AMD64 iso (checked MD5 again and OK) and it fails too :( - Maybe I'll have to try and old installer and upgrade! Dec 5, 2011 at 14:18
  • really strange, probably it's a bug, i don't know what to say, try to boot an image from this iso files help.ubuntu.com/community/Installation/MinimalCD
    – Micro
    Dec 5, 2011 at 14:32

1 Answer 1

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At the menu when booting, I selected Memory Test and immediately, it showed error after error for one of my modules (thankfully the smallest one, only 1GB).

Removed it and the LiveCD/USB boot first time without a hitch!

If you have a similar issue... try testing the memory too!

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