Today I have officially published the PHC kernel for Ubuntu 10.10 Maverick Meerkat. The Linux PHC project provides cpufreq kernel modules for undervolting Intel and AMD processors on a Linux platforms. This gives you the ability to save energy, lower the CPU temperature and expand battery time.<\/p>\n
Linux PHC usually doesn't need a custom kernel, as it only provides some additional kernel modules, which can be compiled out-of-tree. Unfortunately the Ubuntu kernel is that much optimized for fast booting so the default cpufreq kernel modules like acpi-cpufreq (used for Intel processors) and powernow-k8 (used for AMD processors) are compiled-in and can't be replaced by other kernel modules like Linux PHC ones. To workaround this problem I started to build special -phc kernels, which are prepared for use with Linux PHC. Strictly speaking they contain cpufreq modules like acpi-cpufreq and powernow-k8 in module form instead of compiled-in. Moreover to make it easier to install and receive updates for -phc kernels we provide a PPA on Launchpad<\/a>.<\/p>\n If you want to know more about Linux PHC take a look at the Linux PHC forum<\/a> and the PHC wiki<\/a>. The installation notes for the PHC kernel are in this thread<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" Today I have officially published the PHC kernel for Ubuntu 10.10 Maverick Meerkat. The Linux PHC project provides cpufreq kernel modules for undervolting Intel and AMD processors on a Linux platforms. This gives you the ability to save energy, lower the CPU temperature and expand battery time. Linux PHC usually doesn’t need a custom kernel, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,4],"tags":[6,7,8],"class_list":["post-93","post","type-post","status-publish","format-standard","hentry","category-floss","category-hardware","tag-linux-phc","tag-ubuntu","tag-undervolting"],"_links":{"self":[{"href":"https:\/\/david.gnedt.at\/blog\/wp-json\/wp\/v2\/posts\/93","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/david.gnedt.at\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/david.gnedt.at\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/david.gnedt.at\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/david.gnedt.at\/blog\/wp-json\/wp\/v2\/comments?post=93"}],"version-history":[{"count":2,"href":"https:\/\/david.gnedt.at\/blog\/wp-json\/wp\/v2\/posts\/93\/revisions"}],"predecessor-version":[{"id":146,"href":"https:\/\/david.gnedt.at\/blog\/wp-json\/wp\/v2\/posts\/93\/revisions\/146"}],"wp:attachment":[{"href":"https:\/\/david.gnedt.at\/blog\/wp-json\/wp\/v2\/media?parent=93"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/david.gnedt.at\/blog\/wp-json\/wp\/v2\/categories?post=93"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/david.gnedt.at\/blog\/wp-json\/wp\/v2\/tags?post=93"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}