[Bug 836119] Re: KVM Guest gets general protection fault on two CPUs

Endre Stølsvik online at stolsvik.com
Sat Sep 17 10:57:05 UTC 2011


Sorry for delay.

This seems to have been a physical problem with the RAM. It is a six-
core AMD system with 4 sticks of 4 GB RAM, specced to 1600 MHz.
Apprarently the mainboard doesn't overvolt the RAM to its needed 1.65V
when running at 1600MHz (even though the BIOS actually asks whether it
should do this when you apply the RAM-stick-specified settings..) And
then, even when setting the voltage to 1.65 manually, the system still
isn't stable at 1600 MHz RAM speed.

But when I clocked the RAM down to ca. 1450 MHz instead (currently at
1.60v), the system seems fully stable (even with a slight overclock of
the CPU - so this was definitely a RAM issue).

This bug can be closed. Sorry for the noise.

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https://bugs.launchpad.net/bugs/836119

Title:
  KVM Guest gets general protection fault on two CPUs

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