Difference between revisions of "User:Hmh"

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== ThinkPad T43 2687-DDU setup for Debian Etch ==
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== Who is Hmh? ==
  
This is an ongoing, spotty guide for an advanced {{Debian}} setup of a {{T43}}, focused on using absolutely all of its capabilities that can be used.  It is not an installation guide, but rather a configuration guide.  Refer to {{Debian}} for a list of pages with initial installation instructions.
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I am a Debian Developer for quite a few years now, and the current maintainer of [[ibm-acpi]]/[[thinkpad-acpi]], aka "ThinkPad ACPI Extras" Linux kernel driver for ThinkPad laptops.
  
When it is really usable, I will move it to some other far more public place in [[ThinkWiki]].
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I am also involved with the [[tp_smapi]] and [[HDAPS]] Linux drivers, as a beta-tester and power-user. I don't list myself as a developer for those projects because I have never contributed a single line of code to them, just suggestions and bug reports ;-)
  
Installing should be done using the latest Debian Etch debian-installer release.  Anything else simply will not run on the ThinkPad.
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== My ThinkPads ==
  
=== Kernel ===
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I own just a simple [[:Category:T43|T43]] model 2687-DDU.  It is a great machine: a very solid ThinkPad, with its own set of annoying quirks just like any other IBM-era ThinkPad.  The SATA-PATA bridge, tg3 noise at full network load, and lack of support for AHCI being the worst ones IMHO.
  
Baseline kernel: Debian's latest 2.6.16 (2.6.16.17 with stabilization patches) {{NOTE|Thinkpad support is an ongoing, bleeding edge effort. One ends up needing to apply a ton of patches and to use the latest available kernel, sometimes even kernels not yet released}} {{HINT|The [http://members.optusnet.com.au/ckolivas/kernel/ Con Kolivas (ck) desktop kernel] patches might be very applicable to a ThinkPad Kernel}}
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== ping ==
  
==== Patches employed ====
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This is a ping edit, to let Akw know I am still alive and to not purge my account ;-)
* Latest ipw2200 driver and ieee80211 layer:
 
:There are two ways to go about this: either '''disable''' IEEE 802.11 support (and thus ipw2200) in the kernel and build both modules out-of-tree (failure to do so will break the out-of-tree build), or update the kernel subsystems with more up-to-date files.
 
:The advantage of updating the kernel drivers instead of doing an out-of-tree build is that should there be any configuration options that require ieee80211 support, those will be available.  On the other hand, it is a bit more difficult, as you will have to mess with Kconfig.
 
:* copied files over the in-kernel files in {{path|include/net}}, {{path|drivers/net/wireless}}, {{path|Documentation/networking}}, {{path|net/ieee80211}}, thus replacing the old drivers with the new ones.
 
:* ipw2200 often have extra options you need to enable, look in the toplevel Makefile and add them to {{path|drivers/net/wireless/Kconfig}}. They are usually bool types, so it is trivial to copy, e.g. IPW_DEBUG and rename to the new required options.
 
* [[Problems with SATA and Linux#Hang on resume from suspend to RAM|SATA power-management]]
 
* [[HDAPS|freeze-block-queue patch (for HDAPS)]]
 
* [http://acpi.sourceforge.net/download.html ACPI update patches]
 
* [[Tp smapi|TP SMAPI support]]
 
* [[Software Suspend 2]]
 
* [[Conexant HSF modem drivers#The Linuxant hsf driver|Linuxant Conexant HSF modem driver]]
 
* [[How to make use of IrDA#ISA PnP patch|nsc-ircc ISA PNP patch]]
 
  
==== Kernel setup tasks ====
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== Links ==
# Make sure the following subsystems are modules (for suspend/resume)
 
## USB (especially EHCI_HCD and UHCI_HCD)
 
## HDAPS (may work compiled in, as well)
 
# Make sure the following subsystems are enabled and not modules (safety net)
 
## ThinkPad SMAPI
 
# Place the following modules on /etc/modules:
 
## hdaps
 
## nsc-ircc
 
## tg3
 
## ipw2200
 
# [[How to make use of IrDA#Kernel configuration|Configure IrDA module options]]
 
# ipw2200 firmware needs to go in {{path|/lib/firmware}}. The module should be given the led=1 module parameter option
 
  
=== Userland ===
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* [[ibm-acpi|The Linux kernel ibm-acpi driver, which I currently maintain]]
 
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* [http://people.debian.org/~hmh/ My Debian.org homepage with some old stuff]
==== Simple configuration issues ====
 
 
 
These are fairly simple minor things you might want to do:
 
 
 
===== /etc/sysctl.conf =====
 
 
 
install the procps package. Add the following lines to /etc/sysctl.conf:
 
 
 
{{FIXME|nothing here yet}}
 
 
 
===== /etc/sysfs.conf =====
 
 
 
install the sysfsutils package. Add the following lines to /etc/sysfs.conf
 
 
 
# ThinkPad battery charger defaults
 
devices/platform/smapi/BAT0/start_charge_tresh=40
 
devices/platform/smapi/BAT0/stop_charge_tresh=85
 
devices/platform/smapi/BAT1/start_charge_tresh=70
 
devices/platform/smapi/BAT1/stop_charge_tresh=90
 
 
# Default frequency scalling governor
 
devices/system/cpu/cpu0/cpufreq/scaling_governor=conservative
 
 
 
==== udev rules ====
 
 
 
# udev extended network interface naming needs to be configured, order of tg3/ipw2200 won't be respected if {{path|/etc/modules.conf}} is read after udev did the PCI coldplugging
 
 
 
==== Kernel/module configuration ====
 
 
 
This is done in /etc/modprobe.d/ files.  Install the setserial package.
 
 
 
Add a /etc/modprobe.d/thinkpad-t43 file there with this content:
 
# Intel Wireless, default to radio offline for safety and security
 
options ipw2200 disable=1 led=1 hwcrypto=1
 
 
# IrDA
 
alias irda0 nsc-ircc
 
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3
 
install nsc-ircc /bin/setserial /dev/ttyS1 uart none port 0 irq 0; /sbin/modprobe --ignore-install nsc-ircc
 
 
 
References:
 
* [[How to make use of IrDA]]
 
 
 
==== Software that needs packaging ====
 
{{NOTE|If nobody beats me to it, I will probably package them for official upload to Debian, and official Debian Sarge backports.  This requires that the software be properly licensed first, of course}}
 
* hdapsd (a bit crude, needs a lot of work still)
 
* ipw2200/ieee80211 need adopting, and since they clash terribly with in-kernel support, they will only work right if we either convert them to be patch-based, or to detect that the user built with in-kernel ieee80211/ipw2200 enabled and abort the out-of-tree compilation.
 
 
 
==== Software that could benefit from re-packaging ====
 
* hsfmodem: should be easy to build out-of-tree in another machine other than the one it will be installed at
 
 
 
== External Links ==
 
* [http://www.debianhelp.co.uk/udev.htm udev interface naming guide]
 
* [http://members.optusnet.com.au/ckolivas/kernel/ ck desktop-kernel patches]
 

Latest revision as of 01:26, 14 August 2013

Who is Hmh?

I am a Debian Developer for quite a few years now, and the current maintainer of ibm-acpi/thinkpad-acpi, aka "ThinkPad ACPI Extras" Linux kernel driver for ThinkPad laptops.

I am also involved with the tp_smapi and HDAPS Linux drivers, as a beta-tester and power-user. I don't list myself as a developer for those projects because I have never contributed a single line of code to them, just suggestions and bug reports ;-)

My ThinkPads

I own just a simple T43 model 2687-DDU. It is a great machine: a very solid ThinkPad, with its own set of annoying quirks just like any other IBM-era ThinkPad. The SATA-PATA bridge, tg3 noise at full network load, and lack of support for AHCI being the worst ones IMHO.

ping

This is a ping edit, to let Akw know I am still alive and to not purge my account ;-)

Links