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Re: Microcode bug problem?

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On 2023-03-19 at 14:00, Jesper Dybdal wrote:

> I am planning to upgrade from Buster to Bullseye, and trying to prepare 
> for any problems.
> 
> The release notes say
>> The intel-microcode package currently in bullseye and buster-security 
>> (see DSA-4934-1 (https:
>> //www.debian.org/security/2021/dsa-4934)) is known to contain two 
>> significant bugs. For
>> some CoffeeLake CPUs this update may break network interfaces 
>> (https://github.com/intel/
>> Intel-Linux-Processor-Microcode-Data-Files/issues/56) that use 
>> firmware-iwlwifi,
>> and for some Skylake R0/D0 CPUs on systems using a very outdated 
>> firmware/BIOS, the system may
>> hang on boot 
>> (https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/
>> issues/31).
> 
> I have no idea whether my old processor is a "CoffeeLake" or a "Skylake" 
> or something else.  It is a pc that I bought in 2008, I think (and still 
> working just fine).
> 
> /proc/cpuinfo says:
>> vendor_id       : GenuineIntel
>> cpu family      : 6
>> model           : 23
>> model name      : Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz

According to a bit of Googling, the Core 2 Duo E8400 is from the
microarchitecture codenamed Wolfdale.

According to
https://en.wikipedia.org/wiki/List_of_Intel_CPU_microarchitectures,
Wolfdale is the codename for the desktop version of what might be
considered "generation 0", prior to the "Core i" series of CPU product
names, and was released in 2007.

According to that same page, Skylake was generation 6, and was released
in 2015.

According to that same page, Coffee Lake was part of generations 8 and
9, and was released in 2017.

> Do I need to worry about those microcode bugs?

Based on the above: no.

-- 
   The Wanderer

The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man.         -- George Bernard Shaw

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Thread

Microcode bug problem? Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-03-19 19:10 +0100
  Re: Microcode bug problem? Linux-Fan <Ma_Sys.ma@web.de> - 2023-03-19 19:40 +0100
    Re: Microcode bug problem? Jesper Dybdal <jesper@dybdal.dk> - 2023-03-19 22:40 +0100
  Re: Microcode bug problem? The Wanderer <wanderer@fastmail.fm> - 2023-03-19 19:40 +0100
  Re: Microcode bug problem? Felix Miata <mrmazda@earthlink.net> - 2023-03-19 20:30 +0100
  Re: Microcode bug problem? Stefan Monnier <monnier@iro.umontreal.ca> - 2023-03-19 20:40 +0100

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