Re: [gentoo-user] MCE error

[Volker Armin Hemmann]

Am 28.03.2015 um 23:00 schrieb Sebas Pedersen:
> On 28-03-2015 06:45 PM, Volker Armin Hemmann wrote:
>> Am 28.03.2015 um 14:58 schrieb Sebas Pedersen:
>>> Hi guys,
>>>
>>> From a few days ago I am experimenting an MCE error.
>>> Sometimes I turn on the computer and at some point while booting the
>>> kernel (after the grub menu) just freezes and puts this:
>>>
>>> CPU 0: Machine Check Exception: 4 Bank 4: b200000000070f0f
>>> TSC f5acc9180
>>> PROCESSOR 2:20fc2 TIME 1427486735 SOCKET 0 APIC 0 microcode 0
>>>
>>> the number for TSC may vary, but the b200000000070f0f it's always the
>>> same (at least for now). The error message suggest to parse the above
>>> error with mcelog. I did that and the result was:
>>>
>>> Hardware event. This is not a software error.
>>> CPU 0 4 northbridge TSC f5acc9180
>>> TIME 1427486735 Fri Mar 27 17:05:35 2015
>>>   Northbridge Watchdog error
>>>        bit57 = processor context corrupt
>>>        bit61 = error uncorrected
>>>   bus error 'generic participation, request timed out
>>>              generic error mem transaction
>>>              generic access, level generic'
>>> STATUS b200000000070f0f MCGSTATUS 4
>>> CPUID Vendor AMD Family 15 Model 44
>>> SOCKET 0 APIC 0 microcode 0
>>>
>>> The error suggest it's a hardware problem. I replace de RAM with no
>>> luck. Same error keeps happening.
>>>
>>> Any suggestion for identifying the problem or how to procede?
>>>
>>> Many thanks in advance!
>>>
>>> Sebas
>>>
>>>
>>
>> bios update/microcode update. A google search suggests that you have run
>> into an errata.
>
> Oh OK, thank you. Must have miss that in the search. So you are saying
> that the error comes from a bios errata (and don't know what microdode
> is), and the fix is to update bios?

no, possibly from a CPU errata and a bios update might bring in the
microcode update that works around that.