Difference between revisions of "User:Hmh"

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== ThinkPad T43 2687-DDU setup for Debian Sarge ==
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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 ;-)
  
=== Kernel ===
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== My ThinkPads ==
  
Baseline kernel: Debian's latest 2.6.15 (2.6.15.4 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}}
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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.
  
==== Patches employed ====
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== ping ==
* 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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This is a ping edit, to let Akw know I am still alive and to not purge my account ;-)
# 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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== Links ==
  
==== udev rules ====
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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]
# 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
 
 
 
==== Debian Sarge software packages ====
 
 
 
Some packages need versions far more up-to-date than those available in Sarge to properly support the new kernels.
 
{{HINT|Refer to [http://backports.org/instructions.html http://backports.org/instructions.html] for instructions on how to setup apt for the backports.org repository}}
 
 
 
* udev (backports.org), due to Linux kernel 2.6.15+
 
* hibernate (backports.org), due to [[Software Suspend 2]] 2.2+
 
* wireless-tools (backports.org), due to ipw2200 1.0.12+
 
 
 
==== Software that needs packaging/backporting ====
 
{{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)
 
* pcmcia tools (verify if not already backported)
 
* hal (!)
 
* 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://backports.org/ Debian Sarge backports repository]
 
* [http://dev-loki.blogspot.com/2005/12/forcing-network-interface-names.html udev interface naming guide]
 

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