Intel Core i7 3960X Sandy-E Takes Big Dive On Linux

[Daniel]

bnolsen,

thanks for your reply. Do you think that the new bios resolved the issues, so that now it should be safe to buy such a system?

The reason that I am asking is that I found a thread on the Intel forum which discusses a similar issue ( http://communities.intel.com/message/162695#162695 ). There, the problem seems to have been solved when a new bios update came out.

I had some serious serious bios issues with the 3930k system I built. Back in february/march I finally got a bios which allowed the system to boot cleanly every single time. I'm guessing the problems are related to ram compatibility with the memory controller.

[bnolsen]

I had some serious serious bios issues with the 3930k system I built. Back in february/march I finally got a bios which allowed the system to boot cleanly every single time. I'm guessing the problems are related to ram compatibility with the memory controller.

[Daniel]

Any news on this bug?

Hi

I am planning to purchase the processor discussed here (Intel Core i7 3960X "Sandy Bridge" E) and would like to run Ubuntu 12.04, but I am really worried about the bug. Does anybody know whether this bug has been confirmed or resolved?

Thanks a lot!

Daniel

Phoronix: Intel Core i7 3960X Sandy-E Takes Big Dive On Linux

While the thousand-dollar Intel Core i7 3960X "Sandy Bridge" Extreme Edition processor can build the Linux kernel in under 60 seconds, this morning it took a nasty dive under Linux...

http://www.phoronix.com/vr.php?view=MTAyNzE

[Meyithi]

I'm having a hard time overclocking this chip on Linux, I have to disable speedstep otherwise it seems the turbo never kicks in, and overclocking on Sandy Bridge-E is done through the Turbo! Since a /proc/cpuinfo | grep MHz returns 3299.992 no matter what I do with speedstep disabled I'm basically having to refer to Windows overclock temps to see what is happening even though it's the same overclock - http://i.imgur.com/5UAXz.png

On the Windows OC I had speedstep and all C States enabled, but no power management through Windows. This let the chip idle @ 1.2GHz through C State and on load all cores were at 100x42 for a 4.2GHz overclock.

On Linux, the same settings stopped the turbo kicking in at all, as my cpuinfo grep always returns 3299.992 I had to use temps to see what was happening. With speedstep enabled and without having any frequency scaling set up in Linux (cpufreq/cpupower) I was getting temps a good 15C lower which seemed to indicate a lack of turbo. By disabling speeedstep I saw my temps correlate to the Windows overclock. Whether I'm Idling @ 1.2GHz within Linux is anybody's guess, I've absolutely no way of knowing. but it would be nice :/

[jrjames001]

1 question

Could it have anything to do with the cold boot?

[Kano]

nice box, how fast does your cpu run now and which cooler do you use?

[bnolsen]

arch linux

I built an 3930k with an msi x79ma-gd45 and 4x8GB g.skill kit N82E16820231507.

I plugged drives into the SATA 3g connections (both 3.5" 7200rpm drives).
Running arch linux the only problems I had was the memory seating in the board.
For some reason these new boards seem to only have tension levers on one side of the ram, not on both.

[hf2046]

Is the system using an OCZ Vertex 3? If so, what firmware version?

[Michael]

https://bugzilla.redhat.com/show_bug.cgi?id=753219

Nope, tried it, still not booting.

[fhuberts]

please do a google search first before whining...

https://bugzilla.redhat.com/show_bug.cgi?id=753219