kernel-packages team mailing list archive
-
kernel-packages team
-
Mailing list archive
-
Message #153397
[Bug 1506050] Re: intel cpu frequency is stuck at ~400mhz
Chris Ng, this bug report is being closed due to your last comment
https://bugs.launchpad.net/ubuntu/+source/linux-lts-
vivid/+bug/1506050/comments/2 regarding this being fixed by using the
default provided microcode. For future reference you can manage the
status of your own bugs by clicking on the current status in the yellow
line and then choosing a new status in the revealed drop down box. You
can learn more about bug statuses at
https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time
to report this bug and helping to make Ubuntu better. Please submit any
future bugs you may find.
** Changed in: linux-lts-vivid (Ubuntu)
Status: New => Invalid
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-lts-vivid in Ubuntu.
https://bugs.launchpad.net/bugs/1506050
Title:
intel cpu frequency is stuck at ~400mhz
Status in linux-lts-vivid package in Ubuntu:
Invalid
Bug description:
I upgraded an install of 14.0.4.3 to the LST Enablement Stack for
Vivid (kernel 3.19) that is running on a Xeon E5-1630 V3 (a Haswell
Quad-Core) . Booting with 3.19 would result in the system being very
sluggish. 'cpupower frequency-info' would report that the CPU was
running at around 400mhz, as would 'cat
/sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq'. The CPUs
would remain around 400mhz regardless of load.
This was using the intel_pstate driver and the powersave governor.
Switching to the performance governor had no effect. Using the acpi-
cpufreq driver also had no effect, the system was still sluggish even
though the reported frequencies in /sys/devices/.
Eventually I tracked it down to the original install having had the
intel_microcode package installed at some point. Once I removed this
then the CPU frequencies scaled correctly with load. FYI the
particular version installed was intel-microcode/trusty-updates,now
2.20140624-t-1ubuntu2 amd64.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.19.0-30-generic 3.19.0-30.34~14.04.1
ProcVersionSignature: Ubuntu 3.19.0-30.34~14.04.1-generic 3.19.8-ckt6
Uname: Linux 3.19.0-30-generic x86_64
NonfreeKernelModules: nvidia zfs zunicode zcommon znvpair zavl
ApportVersion: 2.14.1-0ubuntu3.15
Architecture: amd64
Date: Wed Oct 14 12:38:05 2015
InstallationDate: Installed on 2014-08-05 (434 days ago)
InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
SourcePackage: linux-lts-vivid
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-lts-vivid/+bug/1506050/+subscriptions
References