[Z77 Extreme4] scaling_min_freq wrong on my Intel CPU
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
cpufreqd (Ubuntu) |
Triaged
|
Low
|
Unassigned |
Bug Description
With my Intel CPU scaling does not work out of the box. The problem is that although the hardware limits are correctly detected only the "range" between 3.50 and 3.50 GHz is used:
cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to <email address hidden>, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us.
hardware limits: 1.60 GHz - 3.50 GHz
available frequency steps: 3.50 GHz, 3.50 GHz, 3.40 GHz, 3.20 GHz, 3.10 GHz, 3.00 GHz, 2.80 GHz, 2.70 GHz, 2.50 GHz, 2.40 GHz, 2.30 GHz, 2.10 GHz, 2.00 GHz, 1.90 GHz, 1.70 GHz, 1.60 GHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 3.50 GHz and 3.50 GHz.
current CPU frequency is 3.50 GHz.
cpufreq stats: ...
WORKAROUND: Uninstall package cpufreqd.
WORKAROUND: cat cpufreq_
#!/bin/sh
min_freq=$(cat /sys/devices/
echo "Setting scaling_min_freq to $min_freq"
for i in `seq 0 7`; do echo $min_freq > /sys/devices/
afterwards:
> cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to <email address hidden>, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us.
hardware limits: 1.60 GHz - 3.50 GHz
available frequency steps: 3.50 GHz, 3.50 GHz, 3.40 GHz, 3.20 GHz, 3.10 GHz, 3.00 GHz, 2.80 GHz, 2.70 GHz, 2.50 GHz, 2.40 GHz, 2.30 GHz, 2.10 GHz, 2.00 GHz, 1.90 GHz, 1.70 GHz, 1.60 GHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 1.60 GHz and 3.50 GHz.
current CPU frequency is 1.60 GHz.
...
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.13.0-39-generic x86_64
NonfreeKernelMo
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
Date: Sun Nov 9 13:54:23 2014
HibernationDevice: RESUME=
InstallationDate: Installed on 2014-08-28 (72 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
IwConfig:
eth0 no wireless extensions.
eth1 no wireless extensions.
lo no wireless extensions.
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcFB:
0 VESA VGA
1 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.127.8
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/14/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.40
dmi.board.name: Z77 Extreme4
dmi.board.vendor: ASRock
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: To Be Filled By O.E.M.
dmi.product.
dmi.sys.vendor: To Be Filled By O.E.M.
tags: | added: bios-outdated-2.90 |
summary: |
- scaling_min_freq wrong on Intel Core i{5,7} CPUs + [Z77 Extreme4] scaling_min_freq wrong on my Intel CPU |
Changed in linux (Ubuntu): | |
importance: | Undecided → Low |
status: | Confirmed → Incomplete |
tags: |
added: latest-bios-2.90 removed: bios-outdated-2.90 |
Changed in linux (Ubuntu): | |
status: | Confirmed → Triaged |
This change was made by a bot.