Re: [gentoo-user] Microcode update AMD

[Jason Weisberger]

As he said in the previous message, there are almost never changelogs for
microcode updates.

I do, however, have to disagree with *never* disabling microcode updates.
If I recall properly, the AMD Phenom II 720 was able to be unlocked to 4
cores via a misconfiguration that enabled it with ACC.  AMD later corrected
this issue with a microcode update.  True, some motherboards worked around
that fix a different way, but if you had a first gen board with ACC support
you *had* to have the old microcode for it to work.  The update killed your
free core :)
On Jan 17, 2011 3:06 PM, <meino.cramer@×××.de> wrote:
> Volker Armin Hemmann <volkerarmin@××××××××××.com> [11-01-17 20:16]:
>> On Monday 17 January 2011 18:21:48 meino.cramer@×××.de wrote:
>> > Hi,
>> >
>> > I have two questions:
>> >
>> > 1) Do I have to enable microcode updates in the BIOS of my Crosshair
>> > IV Formula to activate microcodes push in the CPU by the module
>> > "microcode" ? (AMD Phenom X6 1090T)
>> >
>>
>> you ALWAYS have to activate that! This way the bios updates the microcode
with
>> the latest version it is carrying around. Not activating that option is
>> really, really stupid. For many reasons. It is also (almost) completely
>> unrelated to that blob.
>>
>> That blob is for the OS so you can upload an even more recent version of
>> microcode. In case your bios sucks. For example.
>>
>> > 2) Does anyone know, what these microcodes do? They are fixes for...
>> > ...what?
>>
>> the CPU. All CPUs use microcode. For decades. Google, or go straight to
>> wikipedia.
>> http://en.wikipedia.org/wiki/Microcode
>>
>
> Cool down. I know for waht microcodes are good for.
>
> My question means: What specific bugs/features of my CPU get fixed,
> when I use the microcde included in the recent microcode update???
>
>
>
>