Comment 0 for bug 1480349

Revision history for this message
Shahar Or (mightyiam) wrote : Breaks frequency scaling in Xeon® E5-2687W v3

When I boot with this installed frequency scaling is no longer behaving as expected.

It seems that with this installed, the OS loses control of the scaling.

It seems that scaling is performed, though. And very much to the purpose of power saving.

Performance is terrible because of this. And I do mean terrible.

It makes it so that there are two governors available, powersave and performance.

And I can seemingly switch between them, but setting performance (yes, on all cores) doesn't seem to change to scaling behavior. The frequency doesn't pass 800MHz.

I would like to use Intel's microcode updates, but I have to have my CPU running at the speed for which it costs so damn much.

Any suggestions?

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: intel-microcode 3.20150121.1
ProcVersionSignature: Ubuntu 4.1.0-2.2-generic 4.1.3
Uname: Linux 4.1.0-2-generic x86_64
ApportVersion: 2.18-0ubuntu5
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri Jul 31 17:56:39 2015
InstallationDate: Installed on 2010-10-12 (1753 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
SourcePackage: intel-microcode
UpgradeStatus: Upgraded to wily on 2014-11-11 (262 days ago)