Difference between revisions of "Patches"

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(added patch for ipw2100 vs C3 issue)
(→‎Kernel patches)
 
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==Kernel patches==
 
==Kernel patches==
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====Dothan CPUs and speedstep====
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*[[Patch disabling ACPI C3 | no-C3 patch for IPW2100]] <tt>(use this if you experience frequent firmware restarts)</tt>
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*[[Patch for controlling fan speed]]
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*[[Pentium M undervolting and underclocking]]
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*[http://acpi.sourceforge.net/ ACPI4Linux] <tt>(Up-to-date ACPI patches to augment what's in the stock kernel)</tt>
  
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If you have a new Dothan CPU (Centrino with 2Megs of L2 cache) and kernel 2.6.8, then you will need to apply [http://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.8-rc3/2.6.8-rc3-mm1/broken-out/bk-cpufreq.patch this patch] and [http://gort.metaparadigm.com/cpufreq/cpufreq-speedstep-dothan-3.patch this one], too. Otherwise speedstep will not work on your Dothan CPU.
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==Application patches==
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*[http://www.qrivy.net/archive/html/linux-biometrics/2005-09/msg00015.html xscreensaver patch for BioAPI support] <small>05:37, 2 Nov 2005 (CET)</small>
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====ipw2100 and C3====
 
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On some Thinkpads there is a problem with the ipw2100 wireless LAN driver when C3 is enabled. It results in frequent firmware restarts due to data corruption. If you see this problem frequently and want to disable C3 but still use C2 and the thermal management, you can apply [http://fionn.de/no-c3.patch this] patch to the file /usr/src/linux/drivers/acpi/processor.c<br>
 
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APPLY THIS PATCH ONLY IF YOUR SYSLOG REPORTS DRIVER RESTARTS AND FIRMWARE RELOADS ALL THE TIME!
 
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This patch causes slightly shorter battery life.
 

Latest revision as of 00:28, 12 March 2009

Information on patches for existing Thinkpad tools and drivers or to adopt others to work with Thinkpads.

Kernel patches

Application patches

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