[Bug 1404509] Re: [precise] udev does not automatically load modules with kernel >= 3.11

Pali pali.rohar at gmail.com
Tue Jan 6 10:12:11 UTC 2015


Yes I have: coretemp.ko module which show temperature of intel core
processors. Or other intel modules like x86_pkg_temp_thermal,
intel_powerclamp, intel_rapl. Or intel module aesni-intel.ko which use
intel AES-NI instructions for optimizes AES support in kernel (e.g. for
luks/dm-crypt).

All these modules have cpu alias in module binary so without that patch
they are not automatically loaded.

Test case is easy: just start precise on those intel core processors and
check if above modules were automatically loaded.

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https://bugs.launchpad.net/bugs/1404509

Title:
  [precise] udev does not automatically load modules with kernel >= 3.11

Status in udev package in Ubuntu:
  Fix Released
Status in udev source package in Precise:
  Triaged

Bug description:
  Udev version in Ubuntu 12.04 LTS Precise does not load all modules
  automatically. This is know bug in udev which was fixed more than one
  year ago in upstream project.

  Specially this bug cause that no module with cpu modalias is loaded
  for kernels >= 3.11.

  More info is on ML:
  http://lists.freedesktop.org/archives/systemd-devel/2013-July/012165.html

  Upstream patch which fixing this bug is simple and one-line:
  http://cgit.freedesktop.org/systemd/systemd/commit/?id=bf7f800f2b3e93ccd1229d4717166f3a4d3af72f

  Please backport this patch to Ubuntu 12.04 LTS. It should be simple as
  it is one-line patch and should not have any regressions. It is also
  in upstream udev project.

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