That canned response doesn't apply, as the problem is not in the kernel
itself, but in the configuration Ubuntu is using to compile the kernel.
The fix is simple: in the kernel config, change
CONFIG_X86_POWERNOW_K8=y
and
CONFIG_X86_ACPI_CPUFREQ=y
to
CONFIG_X86_POWERNOW_K8=m
and
CONFIG_X86_ACPI_CPUFREQ=m
respectively.
Confirmed in Trusty Tahr. Boy this guy's been around.
** Changed in: linux (Ubuntu)
Status: Incomplete => New
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https://bugs.launchpad.net/bugs/355232
Title:
acpi-cpufreq/powernow-k8 should not be built-in into the kernel image
Status in “linux” package in Ubuntu:
New
Status in “linux” source package in Lucid:
In Progress
Bug description:
Binary package hint: linux-image-generic
acpi-cpufreq is not a module anymore and is directly included in the kernel.
I think it is a bad decision because it is now very difficult to use phc to
undervolt a processor : we need to compile the whole kernel with acpi-cpufreq
as a module instead of just compile the module.
http://www.linux-phc.org/index.php
I am using ubuntu jaunty.
Do you think we can have it back as a module for the final release ?
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