[Bug 1071209] Re: memtest86 test #7 fails (random number sequence error)

[Zach]

This bug also affects me.  Tested on two X1 carbons,  i5-3427U w/ 8gb
and an  i5-3317U w/ 4gb.  Both fail at the 42~43% mark with a stream of
errors.

Booting from xubuntu 12.10 amd64 usb (which has memtest 4.20) it fails.

I also tried from an xubuntu 12.04 amd64 usb (which also has memtest
4.20) and it passes.

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Title:
  memtest86 test #7 fails (random number sequence error)

Status in “memtest86+” package in Ubuntu:
  Confirmed

Bug description:
  Trying to check the memory at newly bought notebook I found a bug in
  the memtest86+ version 4.20 in ubuntu 12.10, in ubuntu 12.04 it is ok.
  The bug is reported at least in Fedora and Opensuse. It is assumed
  that the bug is caused by the gcc-4.7.

  It is easily  reproducible - select the test #7 in memtest or just
  wait till it - starting from the 129Mb it will report a lot of errors.
  I have checked it on three different systems , two of them I use on a
  daily basis and would note if RAM is really bad.

  https://bugzilla.redhat.com/show_bug.cgi?id=805813

  http://lists.opensuse.org/opensuse-bugs/2012-09/msg04386.html

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