Arch Linux

JamieKitson

Member

From: UK

Registered: 2010-10-18

Posts: 161

Website

cpufreq_ondemand doesn't load at boot

Hi,

I followed the wiki article for cpu scaling which all worked, but when I rebooted ondemand was not set, however "cpufreq_set -g ondemand" did then work. The article says to add cpufreq_ondemand to the MODULES array in rc.conf which I have done.

The article also says to add acpi_cpufreq to the MODULES array but this resulted in "FATAL: Error inserting acpi_cpufreq (/lib/.../acpi-cpufreq.ko): Device or resource busy" at boot so I took it out. I have though added cpufreq to the DAEMONS array as suggested in another post.

Thanks, Jamie Kitson

skanky

Member

From: WAIS

Registered: 2009-10-23

Posts: 1,847

Re: cpufreq_ondemand doesn't load at boot

Were you running the daemon at the same time as the having it in the module list? If so try the module without it. If not, check what other modules are being loaded - Googling the error message brings up a myriad of causes and solutions - some of which are processor and kernel dependent.

---

"...one cannot be angry when one looks at a penguin."  - John Ruskin
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flay0303

Member

Registered: 2010-01-26

Posts: 29

Re: cpufreq_ondemand doesn't load at boot

please post your /etc/rc.conf.

Behemot

Member

Registered: 2010-12-10

Posts: 96

Re: cpufreq_ondemand doesn't load at boot

I have the same issue, as this one is not solved, I'll continue here…here is my rc.conf followed by cpufreq.conf:

#
# /etc/rc.conf - Main Configuration for Arch Linux
#

# -----------------------------------------------------------------------
# LOCALIZATION
# -----------------------------------------------------------------------
#
# LOCALE: available languages can be listed with the 'locale -a' command
# HARDWARECLOCK: set to "UTC" or "localtime", any other value will result
#   in the hardware clock being left untouched (useful for virtualization)
# TIMEZONE: timezones are found in /usr/share/zoneinfo
# KEYMAP: keymaps are found in /usr/share/kbd/keymaps
# CONSOLEFONT: found in /usr/share/kbd/consolefonts (only needed for non-US)
# CONSOLEMAP: found in /usr/share/kbd/consoletrans
# USECOLOR: use ANSI color sequences in startup messages
#
LOCALE="cs_CZ.UTF-8"
HARDWARECLOCK="localtime"
TIMEZONE="Europe/Prague"
KEYMAP="cz-qwertz"
CONSOLEFONT="cp1250"
CONSOLEMAP=
USECOLOR="yes"

# -----------------------------------------------------------------------
# HARDWARE
# -----------------------------------------------------------------------
#
# MOD_AUTOLOAD: Allow autoloading of modules at boot and when needed
# MOD_BLACKLIST: Prevent udev from loading these modules
# MODULES: Modules to load at boot-up. Prefix with a ! to blacklist.
#
# NOTE: Use of 'MOD_BLACKLIST' is deprecated. Please use ! in the MODULES array.
#
MOD_AUTOLOAD="yes"
#MOD_BLACKLIST=() #deprecated
MODULES=(acpi-cpufreq cpufreq_ondemand)

# Scan for LVM volume groups at startup, required if you use LVM
USELVM="no"

# -----------------------------------------------------------------------
# NETWORKING
# -----------------------------------------------------------------------
#
# HOSTNAME: Hostname of machine. Should also be put in /etc/hosts
#
HOSTNAME="myhost"

# Use 'ifconfig -a' or 'ls /sys/class/net/' to see all available interfaces.
#
# Interfaces to start at boot-up (in this order)
# Declare each interface then list in INTERFACES
#   - prefix an entry in INTERFACES with a ! to disable it
#   - no hyphens in your interface names - Bash doesn't like it
#
# DHCP:     Set your interface to "dhcp" (eth0="dhcp")
# Wireless: See network profiles below

#Static IP example
#eth0="eth0 192.168.0.2 netmask 255.255.255.0 broadcast 192.168.0.255"
eth0="dhcp"
wlan0="dhcp"
INTERFACES=(!eth0 wlan0)

# Routes to start at boot-up (in this order)
# Declare each route then list in ROUTES
#   - prefix an entry in ROUTES with a ! to disable it
#
gateway="default gw 192.168.0.1"
ROUTES=(!gateway)

# Setting this to "yes" will skip network shutdown.
# This is required if your root device is on NFS.
NETWORK_PERSIST="no"

# Enable these network profiles at boot-up.  These are only useful
# if you happen to need multiple network configurations (ie, laptop users)
#   - set to 'menu' to present a menu during boot-up (dialog package required)
#   - prefix an entry with a ! to disable it
#
# Network profiles are found in /etc/network.d
#
# This now requires the netcfg package
#
#NETWORKS=(main)

# -----------------------------------------------------------------------
# DAEMONS
# -----------------------------------------------------------------------
#
# Daemons to start at boot-up (in this order)
#   - prefix a daemon with a ! to disable it
#   - prefix a daemon with a @ to start it up in the background
#
DAEMONS=(syslog-ng alsa dbus !network !netfs !crond wicd laptop-mode)

#
# Configuration file for Laptop Mode Tools module cpufreq.
#
# For more information, consult the laptop-mode.conf(8) manual page.
#

###############################################################################
# CPU frequency scaling and throttling
# ------------------------------------
#
# Laptop mode tools can automatically adjust your kernel CPU frequency
# settings. This includes upper and lower limits and scaling governors.
# There is also support for CPU throttling, on systems that don't support
# frequency scaling.
#
# This feature only works on 2.6 kernels.
#
#
# IMPORTANT: In versions 1.36 and earlier, these settings were included in the
# main laptop-mode.conf configuration file. If they are still present, they
# overrule the settings in this file. To fix this, simply delete the settings
# from the main config file.
#
###############################################################################

# Enable debug mode for this module
# Set to 1 if you want to debug this module
DEBUG=0

#
# Should laptop mode tools control the CPU frequency settings?
#
# Set to 0 to disable
CONTROL_CPU_FREQUENCY="auto"

#
# Legal values are "slowest" for the slowest speed that your
# CPU is able to operate at, "fastest" for the fastest speed,
# "medium" for some value in the middle, or any value listed in
# /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_frequencies.
# The "governor" can be any governor installed on your system, this usually
# includes "ondemand", "conservative", and "performance". The
# "IGNORE_NICE_LOAD" setting specifies that background programs that have
# a low priority ("nice level") should not cause the CPU frequency to
# be increased. (You generally want this to be enabled in battery mode.)
#
BATT_CPU_MAXFREQ=fastest
BATT_CPU_MINFREQ=slowest
BATT_CPU_GOVERNOR=ondemand
BATT_CPU_IGNORE_NICE_LOAD=1
LM_AC_CPU_MAXFREQ=fastest
LM_AC_CPU_MINFREQ=slowest
LM_AC_CPU_GOVERNOR=ondemand
LM_AC_CPU_IGNORE_NICE_LOAD=1
NOLM_AC_CPU_MAXFREQ=fastest
NOLM_AC_CPU_MINFREQ=slowest
NOLM_AC_CPU_GOVERNOR=ondemand
NOLM_AC_CPU_IGNORE_NICE_LOAD=0

#
# Should laptop mode tools control the CPU throttling? This is only useful
# on processors that don't have frequency scaling.
# (Only works when you have /proc/acpi/processor/CPU*/throttling.)
#
# This is only useful on older P4 processors that do not support frequency
# scaling. On such processors, this is the only way to reduce power consumption
# but at the cost of higher performance penalty.
#
# Enable this only if you have a processor that does not support frequency scaling
# On most new processors, you might want to disable it.
#
# Set to 0 to disable.
CONTROL_CPU_THROTTLING=0

#
# Legal values are "maximum" for the maximum (slowest) throttling level,
# "minimum" for minimum (fastest) throttling level, "medium" for a value
# somewhere in the middle (this is usually 50% for P4s), or any value listed
# in /proc/acpi/processor/CPU*/throttling. Be careful when using "maximum":
# this may be _very_ slow (in fact, with P4s it slows down the processor
# by a factor 8).
#
BATT_CPU_THROTTLING=medium
LM_AC_CPU_THROTTLING=medium
NOLM_AC_CPU_THROTTLING=minimum

Aeva

Member

Registered: 2010-12-01

Posts: 29

Re: cpufreq_ondemand doesn't load at boot

This may be a long shot, but try setting "CONTROL_CPU_FREQUENCY" to "1". I had some trouble with LM not loading the modules I wanted either at the start.

Behemot

Member

Registered: 2010-12-10

Posts: 96

Re: cpufreq_ondemand doesn't load at boot

I was thinking if it has only "0" and "auto" possibilities…now it looks like it's working, thank you!

Aeva

Member

Registered: 2010-12-01

Posts: 29

Re: cpufreq_ondemand doesn't load at boot

No problem From my experience, the "auto" setting is a setting that's best to enable when you're not sure about what is best for you. The "1" setting however, makes it so the program/module does exactly what you tell it to in the config file.