Hardware Machine Error Uncorrected Ecc Error
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Machine Check Exception Fix
(21)Search the KB Need Assistance?Support ticketName* First Last Company*Email* PhoneSerial numberPlease enter your system's serial number. This will expedite the handling of your ticket.Problem*Detailed description*Please make sure you are detailed as possible in your description above. Please include serial numbers, order numbers, or any other details that can help us resolve your issue as quick machine check exception windows 8 as possible.Attachments Drop files here or Include any screenshots or log files that will make your issue easier to diagnose.CommentsThis field is for validation purposes and should be left unchanged. Submit a support ticketWhat are Machine Check Exceptions (or MCE)?Last update: August 18, 2014Categories:Hardware / TroubleshootingIf you are seeing messages in your system logs that state "Machine Check Event logged" this could be an indication of a hardware problem or failure.A machine check exception is an error detected by your system's processor. There are 2 major types of MCE errors, a notice or warning error, and a fatal exception. The warning will be logged by a "Machine Check Event logged" notice in your system logs, and can be later viewed via some Linux utilities. A fatal MCE will cause the machine to stop responding and the details of the MCE will be printed out to the system's console.What causes MCE errors?There most common reason for MCE events to occur are:Memory errors or Error Cor
I've been seeing kernel "[Hardware Error]: Machine check events logged" messages in /var/log/messages. These seem to be from the mcelog daemon, and the corresponding logs (I posted an example below) machine exception error windows 10 are in /var/log/mcelog. - is a RAM chip on its way out? Or is this
Machine Check Error Windows 10
the CPU or CPU cache thats having issues? - if RAM, how do I determine which chip(s) are having issues? /var/log/mcelog:
Hardware Error Machine Check Events Logged Redhat
Hardware event. This is not a software error. MCE 0 CPU 0 4 northbridge MISC c0090fff01000000 ADDR 757580490 TIME 1335182555 Mon Apr 23 08:02:35 2012 Northbridge RAM Chipkill ECC error Chipkill ECC syndrome = 4857 bit46 http://www.advancedclustering.com/act-kb/what-are-machine-check-exceptions-or-mce/ = corrected ecc error bit59 = misc error valid bit62 = error overflow (multiple errors) bus error 'local node response, request didn't time out generic read mem transaction memory access, level generic' STATUS dc2bc00048080a13 MCGSTATUS 0 MCGCAP 106 APICID 0 SOCKETID 0 CPUID Vendor AMD Family 16 Model 4 (I've never used mcelog before, but since I upgraded from SLES 11 SP1 to SP2, it seems to be configured to start on boot.) https://forums.suse.com/archive/index.php/t-970.html Thanks, J jmozdzen23-Apr-2012, 15:27Hi J, sounds like a RAM chip giving up... have you had a look at the SEL? Maybe that can give you more details, as the system behind it ought to know about the hardware layout of your machine... Regards, Jens ashbyj24-Apr-2012, 11:50Hi Jens, Thanks for the reply. In the System event log, I see several of these messages that occur during boot: ID = 6eb : 04/22/2012 : 00:27:29 : Memory : BIOS : Configuration Error Is it possible that there is a strange setting in BIOS that would not play well with mcelog? The machine in question is a Sun Fire x4140. Either way, we plan on taking the server down one evening and running memtest86 overnight. Thanks, J jmozdzen24-Apr-2012, 21:43Hi J, Hi Jens, Thanks for the reply. In the System event log, I see several of these messages that occur during boot: ID = 6eb : 04/22/2012 : 00:27:29 : Memory : BIOS : Configuration Error Is it possible that there is a strange setting in BIOS that would not play well with mcelog? The machine in question is a Sun Fire x4140. Either way, we plan on taking the server down one evening and running memtest86 overnight. Thanks, J my guess is that it's actually something your mach
DIMM has some corrected errors, how to identify it? I have another article listed memory testing tools on linux, this time, I use EDAC error report utility Here is an example show you how to identify defective DIMM on http://fibrevillage.com/sysadmin/240-how-to-identify-defective-dimm-from-edac-error-on-linux-2 an AMD_x64 archtecture machine, syslog reorted kernel error from EDAC (Error Detection and Correction kernel module). Here is a piece of typical error message from EDAC kernel: [Hardware Error]: MC4 Error (node 1): DRAM ECC error detected on the NB.kernel: EDAC amd64 MC1: CE ERROR_ADDRESS= 0xf075b2410kernel: EDAC MC1: CE page 0xf075b2, offset 0x410, grain 0, syndrome 0xa082, row 6, channel 0, label "": amd64_edackernel: [Hardware Error]: Error Status: Corrected error, machine check no action required.kernel: [Hardware Error]: CPU:6 (10:8:0) MC4_STATUS[-|CE|MiscV|-|AddrV|CECC]: 0x9c414000a0080813kernel: [Hardware Error]: MC4_ADDR: 0x0000000f075b2410kernel: [Hardware Error]: cache level: L3/GEN, mem/io: MEM, mem-tx: RD, part-proc: SRC (no timeout) You may get confused by the message above, here is a quick way to show you what are they: The structure of the message is: the memory controller (MC1) Error type (CE) memory page (0xf075b2) offset in the page (0x410) The byte granularity (grain 0) machine check exception The error syndrome (0xb741) memory row (row 6) memory channel (channel 0) DIMM label Not given Module name amd64_edac More explain about info given EDAC is composed of a "core" module (edac_core.ko) and several Memory Controller (MC) driver modules. On a given system, the CORE is loaded and one MC driver will be loaded. Both the CORE and the MC driver (or edac_device driver) have individual versions that reflect current release level of their respective modules. Thus, to "report" on what version a system is running, one must report both the CORE's and the MC driver's versions.The example server I used in this article has these two edac module loaded: # lsmod | grep -i edacamd64_edac_mod 21913 0 edac_core 46645 4 amd64_edac_modedac_mce_amd 15615 1 amd64_edac_mod Memory Controller (mc) Model, the memory controller's model abstracted in EDAC. Each 'mc' device controls a set of DIMM memory modules. These modules are laid out in a Chip-Select Row (csrowX) and Channel table (chX). There can be multiple csrows and multiple channels. Memory controllers allow for several csrows, with 8 csrows being a typical value. Channel, each channel represents a DIMM module. Dual channels allows for 128 bit data transfers to the CPU from memory. Some system supports more channels. Csrow, Chip-Select R
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