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memtest86 OR memtest86+ ?


olego

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Hello!

 

I have the desktop with following hardware:

1. MB: ASUS P5QL/EPU

2. RAM: CM2X2048-8500-C5D ver1.2 2.1V 5-5-5-15 (2 x 2 GB)

3. CPU: Intel Dual-Core E6500

4. GPU: nVidia GeForce 9400 GT with binary driver

 

This machine is running for more than two years without any problem, with a default BIOS settings related to RAM, but during the last 2 or 3 months I get deadlock hangs once or twice a week. This machine runs Slackware-current 32 bit with custom compiled vanilla kernel with two additional patches - BFS and TuxOnIce. Deadlocks usually occur when there is no user activity - only rtorrent is running and two KDE4 sessions is open (with firefox, okular, claws-mail, goldendict, virtualbox, rxvt-unicode and other memory consuming apps).

 

This is excerpt from my syslog:

Jan 6 20:47:13 oleg2 mcelog: failed to prefill DIMM database from DMI data

Jan 6 20:47:13 oleg2 mcelog: Kernel does not support page offline interface

Jan 6 20:47:13 oleg2 mcelog: HARDWARE ERROR. This is *NOT* a software problem!

Jan 6 20:47:13 oleg2 mcelog: Please contact your hardware vendor

Jan 6 20:47:13 oleg2 mcelog: MCE 0

Jan 6 20:47:13 oleg2 mcelog: CPU 0 BANK 0

Jan 6 20:47:13 oleg2 mcelog: TIME 1294339633 Thu Jan 6 20:47:13 2011

Jan 6 20:47:13 oleg2 mcelog: MCG status:

Jan 6 20:47:13 oleg2 mcelog: MCi status:

Jan 6 20:47:13 oleg2 mcelog: Error overflow

Jan 6 20:47:13 oleg2 mcelog: Uncorrected error

Jan 6 20:47:13 oleg2 mcelog: Error enabled

Jan 6 20:47:13 oleg2 mcelog: Processor context corrupt

Jan 6 20:47:13 oleg2 mcelog: MCA: BUS Level-0 Local-CPU-originated-request Generic Memory-access Request-timeout Error

Jan 6 20:47:13 oleg2 mcelog: BQ_DCU_READ_TYPE BQ_ERR_HARD_TYPE BQ_ERR_HARD_TYPE

Jan 6 20:47:13 oleg2 mcelog: timeout BINIT (ROB timeout). No micro-instruction retired for some time

Jan 6 20:47:13 oleg2 mcelog: failure that caused IERR

Jan 6 20:47:13 oleg2 mcelog: STATUS f200084000000800 MCGSTATUS 0

Jan 6 20:47:13 oleg2 mcelog: MCGCAP 806 APICID 0 SOCKETID 0

Jan 6 20:47:13 oleg2 mcelog: CPUID Vendor Intel Family 6 Model 23

Jan 6 20:47:13 oleg2 mcelog: HARDWARE ERROR. This is *NOT* a software problem!

Jan 6 20:47:13 oleg2 mcelog: Please contact your hardware vendor

Jan 6 20:47:13 oleg2 mcelog: MCE 1

Jan 6 20:47:13 oleg2 mcelog: CPU 0 BANK 5

Jan 6 20:47:13 oleg2 mcelog: TIME 1294339633 Thu Jan 6 20:47:13 2011

Jan 6 20:47:13 oleg2 mcelog: MCG status:

Jan 6 20:47:13 oleg2 mcelog: MCi status:

Jan 6 20:47:13 oleg2 mcelog: Error overflow

Jan 6 20:47:13 oleg2 mcelog: Uncorrected error

Jan 6 20:47:13 oleg2 mcelog: Error enabled

Jan 6 20:47:13 oleg2 mcelog: Processor context corrupt

Jan 6 20:47:13 oleg2 mcelog: MCA: BUS Level-3 Generic Generic Other-transaction Request-timeout Error

Jan 6 20:47:13 oleg2 mcelog: BQ_DCU_READ_TYPE BQ_ERR_AERR2_TYPE BQ_ERR_AERR2_TYPE

Jan 6 20:47:13 oleg2 mcelog: received parity error on response transaction

Jan 6 20:47:13 oleg2 mcelog: MCE driven MCE is observed

Jan 6 20:47:13 oleg2 mcelog: STATUS f200001034000e0f MCGSTATUS 0

Jan 6 20:47:13 oleg2 mcelog: MCGCAP 806 APICID 0 SOCKETID 0

Jan 6 20:47:13 oleg2 mcelog: CPUID Vendor Intel Family 6 Model 23

Jan 6 20:47:13 oleg2 mcelog: HARDWARE ERROR. This is *NOT* a software problem!

Jan 6 20:47:13 oleg2 mcelog: Please contact your hardware vendor

Jan 6 20:47:13 oleg2 mcelog: MCE 2

Jan 6 20:47:13 oleg2 mcelog: CPU 1 BANK 5

Jan 6 20:47:13 oleg2 mcelog: TIME 1294339633 Thu Jan 6 20:47:13 2011

Jan 6 20:47:13 oleg2 mcelog: MCG status:

Jan 6 20:47:13 oleg2 mcelog: MCi status:

Jan 6 20:47:13 oleg2 mcelog: Error overflow

Jan 6 20:47:13 oleg2 mcelog: Uncorrected error

Jan 6 20:47:13 oleg2 mcelog: Error enabled

Jan 6 20:47:13 oleg2 mcelog: Processor context corrupt

Jan 6 20:47:13 oleg2 mcelog: MCA: BUS Level-3 Generic Generic Other-transaction Request-timeout Error

Jan 6 20:47:13 oleg2 mcelog: BQ_DCU_READ_TYPE BQ_ERR_HARD_TYPE BQ_ERR_HARD_TYPE

Jan 6 20:47:13 oleg2 mcelog: received parity error on response transaction

Jan 6 20:47:13 oleg2 mcelog: MCE driven

Jan 6 20:47:13 oleg2 mcelog: STATUS f200001010000e0f MCGSTATUS 0

Jan 6 20:47:13 oleg2 mcelog: MCGCAP 806 APICID 1 SOCKETID 0

Jan 6 20:47:13 oleg2 mcelog: CPUID Vendor Intel Family 6 Model 23

 

I just would like to get a clue - is this error related to the memory?

 

By default my BIOS set this memory to 5-5-5-18 and 1.8V @ 1066 MHz. I changed settings to 2.1V and 5-5-5-15. My BIOS doesn't allow me to change 1T/2T timings.

 

Anyway in both configs (default and custom) I get NO errors at all with memtest86+ 4.10 and get a lot of errors in test #7 (random number sequence) with memtest86 3.5a.

 

1. Should I try my memory @ 2.2V ? Is it safe? It's labeled as 2.1V.

2. Which test is more reliable - memtest86 or memtest86+ ?

 

 

Since I rose DRAM voltage (a week ago) 1.8V -> 2.1V I got NO errors in my OS. But I'm confused by memtest86 errors.

 

Thanks in advance!

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Did you disable legacy usb in the bios? It is a known to cause errors in memtest.

 

Nope :confused:. I will try to do it tonight. Thank you for the clue!

 

UPD: I disabled and got no differences - errors with memtest86.

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Test with the latest version of Memtest86+ (link and instructions are on the sidebar).

 

Ok, let's decide that memtest86+ is more reliable and 100% trusted. I like this version because I have no errors with it =)

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