tag 689042 + wontfix
severity 689042 wishlist
retitle 689042 requires modular microcode driver for autoload on boot

On Fri, 28 Sep 2012, Eric Valette wrote:
> he old microcode.ctl package did at least provide an init script to perform 
> it. Why
> not iucode-tool?

Why should it?  It is the kernel's job.  An initscript would just slow the
boot.  And the wheezy kernel does its job better when the microcode driver
is a module.

For more details, please install the intel-microcode package, and read the
package documentation in /usr/share/doc/intel-microcode.

Basically, make sure /lib/firmware is in the root filesystem (duh), make
sure the microcode driver is a _module_, and make sure it auto-loads (or add
it to /etc/modules to force it to load manually).  That's it.

If you don't want to use the intel-microcode package, tell iucode-tool to
install the microcode you need (iucode-tool -S -K) for the kernel.  You are
advised to

rm /lib/firmware/intel-ucode/*

before you run iucode-tool -S -K <new microcode data file>

otherwise you may use microcode Intel decided to recall. And no, I have
absolutely no idea why it happens.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh


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