e_powersaver module not compiled

The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would appreciate it if you could please test this newer 2.6.27 Ubuntu kernel. There are one of two ways you should be able to test:

1) If you are comfortable installing packages on your own, the linux-image-2.6.27-* package is currently available for you to install and test.

--or--

2) The upcoming Alpha5 for Intrepid Ibex 8.10 will contain this newer 2.6.27 Ubuntu kernel. Alpha5 is set to be released Thursday Sept 4. Please watch http://www.ubuntu.com/testing for Alpha5 to be announced. You should then be able to test via a LiveCD.

Please let us know immediately if this newer 2.6.27 kernel resolves the bug reported here or if the issue remains. More importantly, please open a new bug report for each new bug/regression introduced by the 2.6.27 kernel and tag the bug report with 'linux-2.6.27'. Also, please specifically note if the issue does or does not appear in the 2.6.26 kernel. Thanks again, we really appreicate your help and feedback.

The e_powersaver is not loaded in the kernel 2.6.27.

So the same problem still exist.

Confirming that CONFIG_X86_E_POWERSAVER is not enabled in Intrepid:

ogasawara@yoji:~/ubuntu-intrepid/debian/config$ grep -rn "CONFIG_X86_E_POWERSAVER" *

i386/config:3646:# CONFIG_X86_E_POWERSAVER is not set

Still not enabled in 2.6.28-2

config-2.6.28-2-generic:# CONFIG_X86_E_POWERSAVER is not set

This looks to be related to the switch to expecting machines to be supported acpi-cpufreq, see bug #246434. I assume that loading the acpi-cpufreq module does not help your CPU.

insmod /lib/modules/2.6.28-2-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko
FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.28-2-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko): No such device

the e_powersaver module works if manually compiled AND patched according to this page: http://pixca.net/blog/bits-and-bytes/epia-sn-e_powersaver/

Per a decision made by the Ubuntu Kernel Team, bugs will longer be assigned to the ubuntu-kernel-team in Launchpad as part of the bug triage process. The ubuntu-kernel-team is being unassigned from this bug report. Refer to https://wiki.ubuntu.com/KernelTeamBugPolicies for more information. Thanks.

http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-jaunty.git;a=commit;h=1f9f0f8f1d1b3acd2032949c72ca60e201e77b5a

It would be nice to have the module compiled in the LTS release as well. Thanks.

This bug was fixed in the package linux - 2.6.28-4.6

---------------
linux (2.6.28-4.6) jaunty; urgency=low

  [ Tim Gardner ]

  * Enable CONFIG_X86_E_POWERSAVER=m for i386 generic
    - LP: #237405
  * Build i386 AGP drivers as modules
    - LP: #312721
  * Build i386 DRM as a module
    - LP: #312721

  [ Upstream Kernel Changes ]

  * drm/i915: Add missing userland definitions for gem init/execbuffer.
    - LP: #308387

 -- Tim Gardner <email address hidden> Mon, 29 Dec 2008 09:16:47 -0700