[sf-lug] (forw) Re: Problems with Ubuntu 17.10 (18.04) using kernels before 4.13.0-21

[Rick Moen]

I wrote:

> It prevents any autoloading of the module resulting from the hardware
> autorecognition process.  That's what the blacklist keyword means.

Well, almost any.  I provided a link to the always-useful Arch Linux
wiki (worth consulting totally without regard to what distribution you 
run), and should have attended to the fine print:

   Note: The blacklist command will blacklist a module so that it will
   not be loaded automatically, but the module may be loaded if another
                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  non-blacklisted module depends on it or if it is loaded manually.
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  However, there is a workaround for this behaviour; the install command
  instructs modprobe to run a custom command instead of inserting the
  module in the kernel as normal, so you can force the module to always
  fail loading with:

  /etc/modprobe.d/blacklist.conf

  ...
  install module_name /bin/false
  ...

  This will effectively blacklist that module and any other that depends
  on it.

Page has a great deal more about the entire context of automatic module
loading by (e.g.) udev (the usual suspect for dumb module loading on 
commondity Linux systems) and how to control its operation.
Recommended.

https://wiki.archlinux.org/index.php/kernel_modules