ThinkWiki - User contributions [en]

Category:235

2005-07-23T22:21:36Z

84.191.157.146:

{| width="100%"
|style="vertical-align:top" |
<div style="margin: 0; margin-right:10px; border: 1px solid #dfdfdf; padding: 0em 1em 1em 1em; background-color:#F8F8FF; align:right;">
=== ThinkPad 235 ===
This page gives an overview of all ThinkPad 235 related topics.

This machine is specific to Asia Pacific (mainly China, Hong Kong, Japan and Korea)
</div>
|style="vertical-align:top" |
|}

[[Category:Models]]

Installing LFS on a ThinkPad T41p

2005-07-23T20:41:20Z

84.191.157.146:

__TOC__
----
==Graphics==

===internal, AGP: ATI Radeon FireGL T2===

You have to choices: xorgs radeon driver or ATIs fglrx driver.
The xorg driver works fine, but doesn't support DRI. Also, support for a docks or port replicators DVI port is theoretically available, but practically not possible. This is being worked on.

===PCI of dock: ATI Radeon 9000===

I made several attempts to get this card working under x.org, with no success, or very limited one.
With both x.org radeon driver and ATIs fglrs driver the system totally freezes when you try enabling the card in your config.
This seems to be a problem with PCI scanning/handling in x.org.

I managed once to get the PCI card alone working after switching the primary display device to PCI in the BIOS.

==Drives==

===Harddisk: Hitachi Travelstar HTS548080M9AT00===

I replaced the original harddrive (60GB at 7260RPM) with the 80GB/5480RPM model from Hitachi (which are the ones that IBM labels for their purposes).
For some speed optimizations you might try the following (at your own risk):
:{{cmdroot|hdparm -c 3 -u 1 -X 99 -k 1 /dev/hda}}

===DVD/CDRW Combo: Toshiba SD-R9012===

The drive works pretty fine with the kernels standard IDE CD-ROM driver. You can burn CDs using cdrecord in ATAPI mode.
Alternatively you may use ide-scsi and treat the device as a SCSI drive.

===Ultrabay 2000 ZIP Drive (in docks Ultrabay 2000)===

Works great using the kernels ide-disk driver.

==Sound: ...==

pending...

==Networking==

===LAN: Intel Pro/1000 (82540EP)===

Compile the e1000 driver into the kernel or as module (CONFIG_E1000).
You might want to take a look at [[ifplugd]].

===Wireless LAN: Atheros AR5212 802.11abg (aka IBM a/b/g)===
The [[madwifi]] project will be your friend.
You might want to give [[waproamd]] a try.

===Modem===

never used

==PCMCIA==

Just enable the PCMCIA support in the kernel configuration and with it the cardbus driver and the thing will work great. A Xircom CardCaddy as well as some other CompactFlash adapter both worked.

==USB==

Enable the EHCI and UHCI drivers in your kernel config. You might need to unload them before suspending and reload them on resume if you use ACPI. This is a kernel issue and should be solved in latest kernels.

==Specials==

===UltraBay===
I didn't have success trying to enable hotplugging. Using [[ibm-acpi]] you can get events for the UltraBay eject lever, but i didn't manage to make hdparm unregister the IDE device. On my system it executes the command giving no error but afterwards the IDE device still shows up in {{path|/proc}}.

===Thinklight===
Works by pressing {{key|Fn}}{{key|PageUp}}, since it's controlled by the BIOS.<br>
See [[ThinkLight | this page]] for further information.

===special keys===
By using [[ibm-acpi]], [[tpb]] and xmodmap you can make use of all the specific special keys.<br />
Have a look [[How to get special keys to work | here]] on how to configure them.

===Trackpoint===
The trackpoint is a PS/2 device. Look [[How to configure the TrackPoint|here]] for a advanced settings/finetuning.

===Touchpad===
pending...

===Docking Station (IBM ThinkPad Full Dock II)===
The thing works great.
PCMCIA and all the ports were recognised by default.
The docks IDE interface is a CMD 648, so you should enable the according kernel option (building as module didn't work for me), if you want to use anything else than a floppy in the docks UltraBay.
Note that the interface will most likely be ide2 and ide3 then, so the docks UltraBay drive will be hde.

==Power Management==

The T41p is APM and ACPI capable.
See [[How to make use of Power Management features]].

[[Category:T41p]] [[Category:LFS]]

Installing LFS on a ThinkPad T41p

2005-07-23T20:37:49Z

84.191.157.146:

__TOC__
----
===Graphics===

====internal, AGP: ATI Radeon FireGL T2====

You have to choices: xorgs radeon driver or ATIs fglrx driver.
The xorg driver works fine, but doesn't support DRI. Also, support for a docks or port replicators DVI port is theoretically available, but practically not possible. This is being worked on.

====PCI of dock: ATI Radeon 9000====

I made several attempts to get this card working under x.org, with no success, or very limited one.
With both x.org radeon driver and ATIs fglrs driver the system totally freezes when you try enabling the card in your config.
This seems to be a problem with PCI scanning/handling in x.org.

I managed once to get the PCI card alone working after switching the primary display device to PCI in the BIOS.

===Drives===

====Harddisk: Hitachi Travelstar HTS548080M9AT00====

I replaced the original harddrive (60GB at 7260RPM) with the 80GB/5480RPM model from Hitachi (which are the ones that IBM labels for their purposes).
For some speed optimizations you might try the following (at your own risk):
:{{cmdroot|hdparm -c 3 -u 1 -X 99 -k 1 /dev/hda}}

====DVD/CDRW Combo: Toshiba SD-R9012====

The drive works pretty fine with the kernels standard IDE CD-ROM driver. You can burn CDs using cdrecord in ATAPI mode.
Alternatively you may use ide-scsi and treat the device as a SCSI drive.

====Ultrabay 2000 ZIP Drive (in docks Ultrabay 2000)====

Works great using the kernels ide-disk driver.

===Sound: ...===

coming soon...

===Networking===

====LAN: Intel Pro/1000 (82540EP)====

Compile the e1000 driver into the kernel or as module (CONFIG_E1000).
You might want to take a look at [[ifplugd]].

====Wireless LAN: Atheros AR5212 802.11abg (aka IBM a/b/g)====
The [[madwifi]] project will be your friend.
You might want to give [[waproamd]] a try.

====Modem====

never used

===PCMCIA===

Just enable the PCMCIA support in the kernel configuration and with it the cardbus driver and the thing will work great. A Xircom CardCaddy as well as some other CompactFlash adapter both worked.

===USB===

Enable the EHCI and UHCI drivers in your kernel config. You might need to unload them before suspending and reload them on resume if you use ACPI. This is a kernel issue and should be solved in latest kernels.

===Specials===

====UltraBay====
I didn't have success trying to enable hotplugging. Using [[ibm-acpi]] you can get events for the UltraBay eject lever, but i didn't manage to make hdparm unregister the IDE device. On my system it executes the command giving no error but afterwards the IDE device still shows up in {{path|/proc}}.

====Thinklight====
Works by pressing {{key|Fn}}{{key|PageUp}}, since it's controlled by the BIOS.<br>
See [[ThinkLight | this page]] for further information.

====special keys====
By using [[ibm-acpi]], [[tpb]] and xmodmap you can make use of all the specific special keys.<br />
Have a look [[How to get special keys to work | here]] on how to configure them.

====Trackpoint====
The trackpoint is a PS/2 device. Look at [[trackpoint]] for a advanced settings/finetuning.

====Touchpad====
coming soon...

====Docking Station (IBM ThinkPad Full Dock II)====
The thing works great.
PCMCIA and all the ports were recognised by default.
The docks IDE interface is a CMD 648, so you should enable the according kernel option (building as module didn't work for me), if you want to use anything else than a floppy in the docks UltraBay.
Note that the interface will most likely be ide2 and ide3 then, so the docks UltraBay drive will be hde.

===Power Management===

The T41p is APM and ACPI capable.
See [[How to make use of Power Management features]].

[[Category:T41p]] [[Category:LFS]]

Ibm-acpi

2005-07-23T20:21:47Z

84.191.157.146: /* Application support */

== ibm-acpi - IBM ThinkPad ACPI Extras Driver ==

This is a Linux ACPI driver for the IBM ThinkPad laptops written by Borislav Deianov. It aims to support various features of these laptops which are accessible through the ACPI framework but not otherwise supported by the generic Linux ACPI drivers. As a kernel module, ibm-acpi works as a bridge to deliver information about certain hardware events like key presses or control the state of certain hardware features by software.

=== Features ===
* Fn key combinations ({{key|Fn}}{{key|F3}}, {{key|Fn}}{{key|F4}}, {{key|Fn}}{{key|F5}}, {{key|Fn}}{{key|F12}})
* Bluetooth enabling and disabling
* video output switching, video expansion control
* ThinkLight on/off
* limited docking and undocking
* UltraBay device eject
* control over several CMOS states
* control of LEDs
* beep generation
* five temperature sensors
* fan control

=== Project Homepage / Availability ===
http://ibm-acpi.sourceforge.net/

Included with the Linux kernel since 2.6.10. (Keep in mind, however, that the version included with the official kernel, or with some particular distribution, is not always the latest one.)

=== Status ===
in development, usable, very much alive

=== Packages ===
*[[:Category:Debian | Debian]] Packages: http://debian.isg.ee.ethz.ch/public/
*[[:Category:Gentoo | Gentoo]] ebuild: http://packages.gentoo.org/packages/?category=app-laptop;name=ibm-acpi

=== Application support===
* [http://www.gkrellm.net GKrellM] supports fan and thermal information
* [http://www.joachim-breitner.de/blog/archives/38-Created-gaim-thinklight.html gaim-thinklight] is a gaim plugin which makes the [[ThinkLight]] blink, when a message arrives.

=== Interesting links related to this project ===
* [http://ibm-acpi.sf.net ibm-acpi Sourceforge project summary]
* [http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad Linux-Thinkpad Mailinglist]
* [http://acpi.sourceforge.net acpi.sourceforge.net]
* [http://www.kernel.org www.kernel.org]

[[Category:Drivers]]
[[Category:570]] [[Category:570E]] [[Category:A20m]] [[Category:A20p]] [[Category:A20m]] [[Category:A20p]] [[Category:A21e]] [[Category:A21m]] [[Category:A21p]] [[Category:A22e]] [[Category:A22m]] [[Category:A22p]] [[Category:G40]] [[Category:G41]] [[Category:R30]] [[Category:R31]] [[Category:R32]] [[Category:R40]] [[Category:R40e]] [[Category:R50]] [[Category:R50p]] [[Category:R51]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:T30]] [[Category:T40]] [[Category:T40p]] [[Category:T41]] [[Category:T41p]] [[Category:T42]] [[Category:T42p]] [[Category:X20]] [[Category:X21]] [[Category:X22]] [[Category:X23]] [[Category:X24]] [[Category:X30]] [[Category:X31]] [[Category:X40]]
[[de:ibm-acpi]]

How to make use of Graphics Chips Power Management features

2005-07-23T20:19:53Z

84.191.157.146:

==Power Saving With A Framebuffer Console==
In order to use the dynamic GPU clock-scaling similar to what X.org has, you need to use the radeonfb kernel module. You'll need to enable the '''CONFIG_FB_RADEON''' in your kernel configuration. If setup correctly you should see something like the following in your kernel log:
radeonfb: Dynamic Clock Power Management enabled

==DynamicClocks in the Radeon Xorg driver==
The xorg X server has support for a power saving feature from ATI called PowerPlay. Xorg calls this feature DynamicClocks. It can be enabled in the server by adding '''Option "DynamicClocks" "on"''' in the '''Device''' section in {{path|/etc/X11/xorg.conf}}

Section "Device"
Identifier "Videocard0"
Driver "radeon"
VendorName "IBM Thinkpad"
BoardName "ATI Radeon Mobility M9"
'''Option "DynamicClocks" "on"'''
EndSection

With this option enabled, the X11 server should print ({{path|/var/log/Xorg.0.log}}):

(**) RADEON(0): Option "DynamicClocks" "on"
(II) RADEON(0): Dynamic Clock Scaling Enabled

==How to use it==

After enabling it, my first question was how do I control it? After reading about it, the answer is: you don't have to, it manages the power consumption for you.\

==X.org on Debian==
Because debian doesn't have X.org yet - [http://incubator.vislab.usyd.edu.au/roller/page/Steve/20040909 Installing a non-intrusive X.org server on Debian].

'''Update:''' X.org has made it into Debian. See: [http://packages.debian.org/unstable/x11/xserver-xorg]

There are also sarge backports available [http://www.backports.org/ here] or [http://people.debian.org/~nobse/xorg-x11/ here].

Add the following line to your repository list:
deb http://people.debian.org/~nobse/xorg-x11/ sarge main

==Extrenal Sources==
*[http://www.ati.com/products/pdf/powerplaywp2.pdf Marketing information from ATI]

[[Category:G40]] [[Category:G41]] [[Category:R32]] [[Category:R40]] [[Category:R40e]] [[Category:R50]] [[Category:R50e]] [[Category:R50p]] [[Category:R51]] [[Category:R52]] [[Category:T30]] [[Category:T40]] [[Category:T40p]] [[Category:T41]] [[Category:T41p]] [[Category:T42]] [[Category:T42p]] [[Category:T43]] [[Category:T43p]]

How to make use of Dynamic Frequency Scaling

2005-07-23T08:41:00Z

84.191.157.146:

==General==
Linux supports Dynamic Frequency Scaling for ThinkPads with mobile Pentium III, Pentium 4 and Pentium M processors.

===Configuring the Kernel===
====2.4 Kernels====
There were various frequency scaling implementations in the 2.4 series of kernels. They all were preliminary and a standard was rised with the introduction of the sysfs filesystem in 2.6 kernels. It is recommended to use a 2.6 kernel, if possible.

====2.6 Kernels====
You need to enable the cpu frequency scaling for your kernel (usually your distros kernel will have this enabled):
CONFIG_CPU_FREQ=y

You need to enable governors, if not already done in your distros default kernel:
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y

Since 2.6.10 there is the ondemand governor that does cpu frequency scaling in kernel so you dont need userspace programs like powernowd etc.
It can be enabled with:
CONFIG_CPU_FREQ_GOV_ONDEMAND=y

==Using the Sys Interface==

The files in {{path|/sys/devices/system/cpu/cpu0/cpufreq/}} provide information and a means of controlling the frequency scaling subsystem.
Seed values are given in Khz. You need to be root to access the /sys filesystem.

Your max speed is at {{path|/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq}}.
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq}}
:{{cmdresult|700000}}
Your min speed is at {{path|/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq}}.
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq}}
:{{cmdresult|500000}}
You can write to {{path|/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}} to change the current speed.
:{{cmdroot|echo 700000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}}
:{{cmdroot|cat /proc/cpuinfo | grep "cpu MHz"}}
:{{cmdresult|cpu MHz : 697.252}}
:{{cmdroot|echo 900000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}}
:{{cmdroot|cat /proc/cpuinfo | grep "cpu MHz"}}
:{{cmdresult|cpu MHz : 976.152}}

==Using Frequency Scaling Governors==
You can compile the scaling gouvernours into your kernel or compile it as module. You'll find the gouvernors with 'make menuconfig' here:
: <code>Power managemant options (ACPI, APM) ---></code>
:: <code>CPU Frequency scaling ---></code>

After booting the new kernel you can get a list of available governors with (as root):
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors}}
:{{cmdresult|conservative ondemand powersave userspace performance}}

A Short Overview over the available governors:
:;ondemand
::This driver is a dynamic cpufreq policy governor. It changes frequency based on the processor load.
:;conservative
::New since 2.6.12. Similar to ''ondemand''. Optimized for battery powered environments and AMD64.
:;powersafe
::Like the name says, your battery would choose this one ;). It sets the Frequency always to the lowest available.
:;userspace
::You have to choose this one, if a [[#Using Frequency Scaling Daemons|frequency scaling daemon]] should manage your CPU frequency or you want to do it manually.
:;performance
::This gouvernour sets your Frequency always to the highest available.

Now we set our governor:
What is our current governor?
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdresult|userspace}}
Set new governor and watch if it has changed
:{{cmdroot|echo conservative > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdresult|conservative}}

Congrats! Your governor is active.

You may set the governor in your rc.local, to make it used on every boot.

==Using Frequency Scaling Daemons==
{{NOTE|It is recommended to use the ondemand frequency scaling governor, available in kernels from 2.6.10. See [[#Using Frequency Scaling Governors|above]].}}

Don't forget to enable the userspace governor to have a userspace daemon do the frequency scaling. If it is built as module, load it as <tt>cpufreq-userspace</tt>.

There are plenty of userspace frequency scaling daemons available:

*[[How to configure cpufreqd | cpufreqd]]
*[[How to configure cpudynd | cpudynd]]
*[[How to configure speedfreqd | speedfreqd]]
*[[How to configure powersaved | powersaved]]
*[[How to configure powernowd | powernowd]]
*[[How to use cpufrequtils | cpufrequtils]]

==Troubleshooting==
*If you have a Coppermine-piix-smi based Thinkpads like from the A2x, X2x and T2x series you need to enable the <tt>speedstep-ich</tt> driver in the kernel and load it if it's built as module. You might want to look at [[How to get SpeedStep working on Coppermine-piix4-smi based Thinkpads | this page]].

*If you have a p4-class celeron based Thinkpad like the R40e you might want to look at [[How to get SpeedStep working on P4-class-Celeron based Thinkpads | this page]]

[[Category:570E]] [[Category:600X]] [[Category:A20m]] [[Category:A20p]] [[Category:A21e]] [[Category:A21m]] [[Category:A21p]] [[Category:A22e]] [[Category:A22m]] [[Category:A22p]] [[Category:G40]] [[Category:G41]] [[Category:R30]] [[Category:R31]] [[Category:R32]] [[Category:R40]] [[Category:R40e]] [[Category:R50]] [[Category:R50e]] [[Category:R50p]] [[Category:R51]] [[Category:R52]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:T30]] [[Category:T40]] [[Category:T40p]] [[Category:T41]] [[Category:T41p]] [[Category:T42]] [[Category:T42p]] [[Category:T43]] [[Category:T43p]] [[Category:X20]] [[Category:X21]] [[Category:X22]] [[Category:X23]] [[Category:X24]] [[Category:X30]] [[Category:X31]] [[Category:X32]] [[Category:X40]] [[Category:X41]] [[Category:X41 Tablet]]

How to make use of Dynamic Frequency Scaling

2005-07-23T08:38:54Z

84.191.157.146: /* 2.6 Kernels */

==General==
Linux supports Dynamic Frequency Scaling for ThinkPads with mobile Pentium III, Pentium 4 and Pentium M processors.

===Configuring the Kernel===
====2.4 Kernels====
There were various frequency scaling implementations in the 2.4 series of kernels. They all were preliminary and a standard was rised with the introduction of the sysfs filesystem in 2.6 kernels. It is recommended to use a 2.6 kernel, if possible.

====2.6 Kernels====
You need to enable the cpu frequency scaling for your kernel (usually your distros kernel will have this enabled):
CONFIG_CPU_FREQ=y

You need to enable governors, if not already done in your distros default kernel:
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y

Since 2.6.10 there is the ondemand governor that does cpu frequency scaling in kernel so you dont need userspace programs like powernowd etc.
It can be enabled with:
CONFIG_CPU_FREQ_GOV_ONDEMAND=y

*If you have a Coppermine-piix-smi based Thinkpads like from the A2x, X2x and T2x series you need to enable the <tt>speedstep-ich</tt> driver in the kernel and load it if it's built as module. You might want to look at [[How to get SpeedStep working on Coppermine-piix4-smi based Thinkpads | this page]].

*If you have a p4-class celeron based Thinkpad like the R40e you might want to look at [[How to get SpeedStep working on P4-class-Celeron based Thinkpads | this page]]

==Using the Sys Interface==

The files in {{path|/sys/devices/system/cpu/cpu0/cpufreq/}} provide information and a means of controlling the frequency scaling subsystem.
Seed values are given in Khz. You need to be root to access the /sys filesystem.

Your max speed is at {{path|/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq}}.
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq}}
:{{cmdresult|700000}}
Your min speed is at {{path|/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq}}.
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq}}
:{{cmdresult|500000}}
You can write to {{path|/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}} to change the current speed.
:{{cmdroot|echo 700000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}}
:{{cmdroot|cat /proc/cpuinfo | grep "cpu MHz"}}
:{{cmdresult|cpu MHz : 697.252}}
:{{cmdroot|echo 900000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}}
:{{cmdroot|cat /proc/cpuinfo | grep "cpu MHz"}}
:{{cmdresult|cpu MHz : 976.152}}

==Using Frequency Scaling Governors==
You can compile the scaling gouvernours into your kernel or compile it as module. You'll find the gouvernors with 'make menuconfig' here:
: <code>Power managemant options (ACPI, APM) ---></code>
:: <code>CPU Frequency scaling ---></code>

After booting the new kernel you can get a list of available governors with (as root):
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors}}
:{{cmdresult|conservative ondemand powersave userspace performance}}

A Short Overview over the available governors:
:;ondemand
::This driver is a dynamic cpufreq policy governor. It changes frequency based on the processor load.
:;conservative
::New since 2.6.12. Similar to ''ondemand''. Optimized for battery powered environments and AMD64.
:;powersafe
::Like the name says, your battery would choose this one ;). It sets the Frequency always to the lowest available.
:;userspace
::You have to choose this one, if a [[#Using Frequency Scaling Daemons|frequency scaling daemon]] should manage your CPU frequency or you want to do it manually.
:;performance
::This gouvernour sets your Frequency always to the highest available.

Now we set our governor:
What is our current governor?
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdresult|userspace}}
Set new governor and watch if it has changed
:{{cmdroot|echo conservative > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdresult|conservative}}

Congrats! Your governor is active.

You may set the governor in your rc.local, to make it used on every boot.

==Using Frequency Scaling Daemons==
{{NOTE|It is recommended to use the ondemand frequency scaling governor, available in kernels from 2.6.10. See [[#Using Frequency Scaling Governors|above]].}}

Don't forget to enable the userspace governor to have a userspace daemon do the frequency scaling. If it is built as module, load it as <tt>cpufreq-userspace</tt>.

There are plenty of userspace frequency scaling daemons available:

*[[How to configure cpufreqd | cpufreqd]]
*[[How to configure cpudynd | cpudynd]]
*[[How to configure speedfreqd | speedfreqd]]
*[[How to configure powersaved | powersaved]]
*[[How to configure powernowd | powernowd]]
*[[How to use cpufrequtils | cpufrequtils]]

[[Category:570E]] [[Category:600X]] [[Category:A20m]] [[Category:A20p]] [[Category:A21e]] [[Category:A21m]] [[Category:A21p]] [[Category:A22e]] [[Category:A22m]] [[Category:A22p]] [[Category:G40]] [[Category:G41]] [[Category:R30]] [[Category:R31]] [[Category:R32]] [[Category:R40]] [[Category:R40e]] [[Category:R50]] [[Category:R50e]] [[Category:R50p]] [[Category:R51]] [[Category:R52]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:T30]] [[Category:T40]] [[Category:T40p]] [[Category:T41]] [[Category:T41p]] [[Category:T42]] [[Category:T42p]] [[Category:T43]] [[Category:T43p]] [[Category:X20]] [[Category:X21]] [[Category:X22]] [[Category:X23]] [[Category:X24]] [[Category:X30]] [[Category:X31]] [[Category:X32]] [[Category:X40]] [[Category:X41]] [[Category:X41 Tablet]]

How to make use of Dynamic Frequency Scaling

2005-07-23T08:37:59Z

84.191.157.146:

==General==
Linux supports Dynamic Frequency Scaling for ThinkPads with mobile Pentium III, Pentium 4 and Pentium M processors.

===Configuring the Kernel===
====2.4 Kernels====
There were various frequency scaling implementations in the 2.4 series of kernels. They all were preliminary and a standard was rised with the introduction of the sysfs filesystem in 2.6 kernels. It is recommended to use a 2.6 kernel, if possible.

====2.6 Kernels====
You need to enable the cpu frequency scaling for your kernel (usually your distros kernel will have this enabled):
CONFIG_CPU_FREQ=y

You need to load enable governors, if not already done in your distros default kernel:
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y

Since 2.6.10 there is the ondemand governor that does cpu frequency scaling in kernel so you dont need userspace programs like powernowd etc.
It can be enabled with:
CONFIG_CPU_FREQ_GOV_ONDEMAND=y

*If you have a Coppermine-piix-smi based Thinkpads like from the A2x, X2x and T2x series you need to enable the <tt>speedstep-ich</tt> driver in the kernel and load it if it's built as module. You might want to look at [[How to get SpeedStep working on Coppermine-piix4-smi based Thinkpads | this page]].

*If you have a p4-class celeron based Thinkpad like the R40e you might want to look at [[How to get SpeedStep working on P4-class-Celeron based Thinkpads | this page]]

==Using the Sys Interface==

The files in {{path|/sys/devices/system/cpu/cpu0/cpufreq/}} provide information and a means of controlling the frequency scaling subsystem.
Seed values are given in Khz. You need to be root to access the /sys filesystem.

Your max speed is at {{path|/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq}}.
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq}}
:{{cmdresult|700000}}
Your min speed is at {{path|/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq}}.
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq}}
:{{cmdresult|500000}}
You can write to {{path|/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}} to change the current speed.
:{{cmdroot|echo 700000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}}
:{{cmdroot|cat /proc/cpuinfo | grep "cpu MHz"}}
:{{cmdresult|cpu MHz : 697.252}}
:{{cmdroot|echo 900000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}}
:{{cmdroot|cat /proc/cpuinfo | grep "cpu MHz"}}
:{{cmdresult|cpu MHz : 976.152}}

==Using Frequency Scaling Governors==
You can compile the scaling gouvernours into your kernel or compile it as module. You'll find the gouvernors with 'make menuconfig' here:
: <code>Power managemant options (ACPI, APM) ---></code>
:: <code>CPU Frequency scaling ---></code>

After booting the new kernel you can get a list of available governors with (as root):
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors}}
:{{cmdresult|conservative ondemand powersave userspace performance}}

A Short Overview over the available governors:
:;ondemand
::This driver is a dynamic cpufreq policy governor. It changes frequency based on the processor load.
:;conservative
::New since 2.6.12. Similar to ''ondemand''. Optimized for battery powered environments and AMD64.
:;powersafe
::Like the name says, your battery would choose this one ;). It sets the Frequency always to the lowest available.
:;userspace
::You have to choose this one, if a [[#Using Frequency Scaling Daemons|frequency scaling daemon]] should manage your CPU frequency or you want to do it manually.
:;performance
::This gouvernour sets your Frequency always to the highest available.

Now we set our governor:
What is our current governor?
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdresult|userspace}}
Set new governor and watch if it has changed
:{{cmdroot|echo conservative > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdresult|conservative}}

Congrats! Your governor is active.

You may set the governor in your rc.local, to make it used on every boot.

==Using Frequency Scaling Daemons==
{{NOTE|It is recommended to use the ondemand frequency scaling governor, available in kernels from 2.6.10. See [[#Using Frequency Scaling Governors|above]].}}

Don't forget to enable the userspace governor to have a userspace daemon do the frequency scaling. If it is built as module, load it as <tt>cpufreq-userspace</tt>.

There are plenty of userspace frequency scaling daemons available:

*[[How to configure cpufreqd | cpufreqd]]
*[[How to configure cpudynd | cpudynd]]
*[[How to configure speedfreqd | speedfreqd]]
*[[How to configure powersaved | powersaved]]
*[[How to configure powernowd | powernowd]]
*[[How to use cpufrequtils | cpufrequtils]]

[[Category:570E]] [[Category:600X]] [[Category:A20m]] [[Category:A20p]] [[Category:A21e]] [[Category:A21m]] [[Category:A21p]] [[Category:A22e]] [[Category:A22m]] [[Category:A22p]] [[Category:G40]] [[Category:G41]] [[Category:R30]] [[Category:R31]] [[Category:R32]] [[Category:R40]] [[Category:R40e]] [[Category:R50]] [[Category:R50e]] [[Category:R50p]] [[Category:R51]] [[Category:R52]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:T30]] [[Category:T40]] [[Category:T40p]] [[Category:T41]] [[Category:T41p]] [[Category:T42]] [[Category:T42p]] [[Category:T43]] [[Category:T43p]] [[Category:X20]] [[Category:X21]] [[Category:X22]] [[Category:X23]] [[Category:X24]] [[Category:X30]] [[Category:X31]] [[Category:X32]] [[Category:X40]] [[Category:X41]] [[Category:X41 Tablet]]

How to make use of Dynamic Frequency Scaling

2005-07-23T08:29:36Z

84.191.157.146: /* configuring SpeedStep daemons */

===general===
Linux supports Dynamic Frequency Scaling for ThinkPads with mobile Pentium III, Pentium 4 and Pentium M processors.

===configuring the kernel===

====2.4 kernels====
Todo...

====2.6 kernels====

You need to enable the cpu frequency scaling for your kernel (usually your distros kernel will have this enabled):
CONFIG_CPU_FREQ=y

You need to load enable governors, if not already done in your distros default kernel:
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y

Since 2.6.10 there is the ondemand governor that does cpu frequency scaling in kernel so you dont need userspace programs like powernowd etc.
It can be enabled with:
CONFIG_CPU_FREQ_GOV_ONDEMAND=y

*If you have a Coppermine-piix-smi based Thinkpads like from the A2x, X2x and T2x series you need to enable the <tt>speedstep-ich</tt> driver in the kernel and load it if it's built as module. You might want to look at [[How to get SpeedStep working on Coppermine-piix4-smi based Thinkpads | this page]].

*If you have a p4-class celeron based Thinkpad like the R40e you might want to look at [[How to get SpeedStep working on P4-class-Celeron based Thinkpads | this page]]

===using the sys interface===

The files in {{path|/sys/devices/system/cpu/cpu0/cpufreq/}} provide information and a means of controlling the frequency scaling subsystem.
Seed values are given in Khz. You need to be root to access the /sys filesystem.

Your max speed is at {{path|/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq}}.
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq}}
:{{cmdresult|700000}}
Your min speed is at {{path|/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq}}.
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq}}
:{{cmdresult|500000}}
You can write to {{path|/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}} to change the current speed.
:{{cmdroot|echo 700000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}}
:{{cmdroot|cat /proc/cpuinfo | grep "cpu MHz"}}
:{{cmdresult|cpu MHz : 697.252}}
:{{cmdroot|echo 900000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}}
:{{cmdroot|cat /proc/cpuinfo | grep "cpu MHz"}}
:{{cmdresult|cpu MHz : 976.152}}

===using scaling gouvernors===
You can compile the scaling gouvernours into your kernel or compile it as module. You'll find the gouvernors with 'make menuconfig' here:
: <code>Power managemant options (ACPI, APM) ---></code>
:: <code>CPU Frequency scaling ---></code>

After booting the new kernel you can get a list of available governors with (as root):
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors}}
:{{cmdresult|conservative ondemand powersave userspace performance}}

A Short Overview over the available governors:
:;ondemand
::This driver is a dynamic cpufreq policy governor. It changes frequency based on the processor load.
:;conservative
::New since 2.6.12. Similar to ''ondemand''. Optimized for battery powered environments and AMD64.
:;powersafe
::Like the name says, your battery would choose this one ;). It sets the Frequency always to the lowest available.
:;userspace
::You have to choose this one, if a frequency scaling daemon should manage your CPU frequency or you want to do it manually.
:;performance
::This gouvernour sets your Frequency always to the highest available.

Now we set our governor:
What is our current governor?
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdresult|userspace}}
Set new governor and watch if it has changed
:{{cmdroot|echo conservative > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdresult|conservative}}

Congrats! Your governor is active.

You may set the governor in your rc.local, to make it used on every boot.

==Configuring Frequency Scaling Daemons==

Don't forget to enable the userspace governor to have a userspace daemon do the frequency scaling. If it is built as module, load it as <tt>cpufreq-userspace</tt>.
Note that since 2.6.10, there is also the ondemand governor in the kernel, which replaces any userspace daemon for cpu scaling and works very well.

There are plenty of userspace frequency scaling daemons available:

*[[How to configure cpufreqd | cpufreqd]]
*[[How to configure cpudynd | cpudynd]]
*[[How to configure speedfreqd | speedfreqd]]
*[[How to configure powersaved | powersaved]]
*[[How to configure powernowd | powernowd]]
*[[How to use cpufrequtils | cpufrequtils]]

[[Category:570E]] [[Category:600X]] [[Category:A20m]] [[Category:A20p]] [[Category:A21e]] [[Category:A21m]] [[Category:A21p]] [[Category:A22e]] [[Category:A22m]] [[Category:A22p]] [[Category:G40]] [[Category:G41]] [[Category:R30]] [[Category:R31]] [[Category:R32]] [[Category:R40]] [[Category:R40e]] [[Category:R50]] [[Category:R50e]] [[Category:R50p]] [[Category:R51]] [[Category:R52]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:T30]] [[Category:T40]] [[Category:T40p]] [[Category:T41]] [[Category:T41p]] [[Category:T42]] [[Category:T42p]] [[Category:T43]] [[Category:T43p]] [[Category:X20]] [[Category:X21]] [[Category:X22]] [[Category:X23]] [[Category:X24]] [[Category:X30]] [[Category:X31]] [[Category:X32]] [[Category:X40]] [[Category:X41]] [[Category:X41 Tablet]]

How to make use of Dynamic Frequency Scaling

2005-07-23T08:29:01Z

84.191.157.146: /* using scaling gouvernors */

===general===
Linux supports Dynamic Frequency Scaling for ThinkPads with mobile Pentium III, Pentium 4 and Pentium M processors.

===configuring the kernel===

====2.4 kernels====
Todo...

====2.6 kernels====

You need to enable the cpu frequency scaling for your kernel (usually your distros kernel will have this enabled):
CONFIG_CPU_FREQ=y

You need to load enable governors, if not already done in your distros default kernel:
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y

Since 2.6.10 there is the ondemand governor that does cpu frequency scaling in kernel so you dont need userspace programs like powernowd etc.
It can be enabled with:
CONFIG_CPU_FREQ_GOV_ONDEMAND=y

*If you have a Coppermine-piix-smi based Thinkpads like from the A2x, X2x and T2x series you need to enable the <tt>speedstep-ich</tt> driver in the kernel and load it if it's built as module. You might want to look at [[How to get SpeedStep working on Coppermine-piix4-smi based Thinkpads | this page]].

*If you have a p4-class celeron based Thinkpad like the R40e you might want to look at [[How to get SpeedStep working on P4-class-Celeron based Thinkpads | this page]]

===using the sys interface===

The files in {{path|/sys/devices/system/cpu/cpu0/cpufreq/}} provide information and a means of controlling the frequency scaling subsystem.
Seed values are given in Khz. You need to be root to access the /sys filesystem.

Your max speed is at {{path|/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq}}.
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq}}
:{{cmdresult|700000}}
Your min speed is at {{path|/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq}}.
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq}}
:{{cmdresult|500000}}
You can write to {{path|/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}} to change the current speed.
:{{cmdroot|echo 700000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}}
:{{cmdroot|cat /proc/cpuinfo | grep "cpu MHz"}}
:{{cmdresult|cpu MHz : 697.252}}
:{{cmdroot|echo 900000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed}}
:{{cmdroot|cat /proc/cpuinfo | grep "cpu MHz"}}
:{{cmdresult|cpu MHz : 976.152}}

===using scaling gouvernors===
You can compile the scaling gouvernours into your kernel or compile it as module. You'll find the gouvernors with 'make menuconfig' here:
: <code>Power managemant options (ACPI, APM) ---></code>
:: <code>CPU Frequency scaling ---></code>

After booting the new kernel you can get a list of available governors with (as root):
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors}}
:{{cmdresult|conservative ondemand powersave userspace performance}}

A Short Overview over the available governors:
:;ondemand
::This driver is a dynamic cpufreq policy governor. It changes frequency based on the processor load.
:;conservative
::New since 2.6.12. Similar to ''ondemand''. Optimized for battery powered environments and AMD64.
:;powersafe
::Like the name says, your battery would choose this one ;). It sets the Frequency always to the lowest available.
:;userspace
::You have to choose this one, if a frequency scaling daemon should manage your CPU frequency or you want to do it manually.
:;performance
::This gouvernour sets your Frequency always to the highest available.

Now we set our governor:
What is our current governor?
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdresult|userspace}}
Set new governor and watch if it has changed
:{{cmdroot|echo conservative > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdroot|cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor}}
:{{cmdresult|conservative}}

Congrats! Your governor is active.

You may set the governor in your rc.local, to make it used on every boot.

===configuring SpeedStep daemons===

Don't forget to enable the userspace governor to have a userspace daemon do the frequency scaling. If it is built as module, load it as <tt>cpufreq-userspace</tt>.
Note that since 2.6.10, there is also the ondemand governor in the kernel, which replaces any userspace daemon for cpu scaling and works very well.

There are plenty of userspace frequency scaling daemons available:

*[[How to configure cpufreqd | cpufreqd]]
*[[How to configure cpudynd | cpudynd]]
*[[How to configure speedfreqd | speedfreqd]]
*[[How to configure powersaved | powersaved]]
*[[How to configure powernowd | powernowd]]
*[[How to use cpufrequtils | cpufrequtils]]

[[Category:570E]] [[Category:600X]] [[Category:A20m]] [[Category:A20p]] [[Category:A21e]] [[Category:A21m]] [[Category:A21p]] [[Category:A22e]] [[Category:A22m]] [[Category:A22p]] [[Category:G40]] [[Category:G41]] [[Category:R30]] [[Category:R31]] [[Category:R32]] [[Category:R40]] [[Category:R40e]] [[Category:R50]] [[Category:R50e]] [[Category:R50p]] [[Category:R51]] [[Category:R52]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:T30]] [[Category:T40]] [[Category:T40p]] [[Category:T41]] [[Category:T41p]] [[Category:T42]] [[Category:T42p]] [[Category:T43]] [[Category:T43p]] [[Category:X20]] [[Category:X21]] [[Category:X22]] [[Category:X23]] [[Category:X24]] [[Category:X30]] [[Category:X31]] [[Category:X32]] [[Category:X40]] [[Category:X41]] [[Category:X41 Tablet]]

Category:600

2005-07-23T08:20:20Z

84.191.157.146:

{| width="100%"
|style="vertical-align:top" |
[[image:ThinkPad600.jpg|ThinkPad 600]]
|style="vertical-align:top" |
<div style="margin: 0; margin-right:10px; border: 1px solid #dfdfdf; padding: 0em 1em 1em 1em; background-color:#F8F8FF; align:right;">
=== ThinkPad 600 ===
This pages gives an overview of all ThinkPad 600 related topics.
==== Features ====
*One of the following processors
** Intel Pentium MMX 233 or 266 MHz
** Intel Pentium II 300 MHz
* Intel BX Chipset
* [[Neomagic MagicGraph128XD]] with 2MB
* 13.3" TFT display with 1024x768 resolution
* 32MB memory standard
* 3.2 HDD
* CS4237B Audio controller
* [[MWave MDSP3780|MWave Modem]]
* IrDA 1.1
* [[UltraBay|UltraslimBay]] with one of the following:
** 1.44MB FDD
** CD-ROM drive
* External Floppy
* PCMCIA:2x Yenta Socket (16/32Bit)
</div>
|}
* [ftp://ftp.software.ibm.com/pc/pccbbs/mobiles/09n1033.pdf ThinkPad 600 - Hardware Maintenance Manual (June 1999)] (1,069,060 Bytes)

[[Category:Models]]