Re: Over 2.5 GB ram problem
When you finally resolve this please CC me so your [SOLVED] post doesn't
get lost in the list noise. I'm guessing it'll be a few days if not
weeks, and by then I'll have stopped actively looking for replies in the
deluge of list mail.
On 7/18/2013 3:21 PM, Gary Roach wrote:
> On 07/17/2013 10:57 PM, Stan Hoeppner wrote:
>> On 7/16/2013 6:30 PM, Gary Roach wrote:
>>> I can't say
>>> that the memory is absolutely good but can say with a high degree of
>>> certainty that it is the correct memory for the system.
>> I gave you the exact JEDEC specs the 4x 1GB DIMMs need to be, and you
>> didn't respond to that. Post the part identification number and density
>> information located on the sticker on each of the 4 DIMMs.
>>
>> Either the board has a problem or the DIMMs are the problem. Apparently
>> the board worked fine for years before you added RAM, correct? That
>> makes the DIMMs the likely suspect.
>>
>>> I am going to try running sysbench on the memory and see if that
>>> uncovers anything. I know that it is primarily for bench testing but
>>> may
>>> uncover something.
>> Sysbench can't tell you why the BIOS doesn't see all of the RAM. It
>> might reveal a timing problem, or bad cells, but such issues won't cause
>> the main problem you have.
>>
> Lets kind of start over.
> 1) I thought I said early on that this was a new to me, used, mobo.
> I don't know if it worked before.
> 2) The bios in setup mode lists 4 memory modules
> 3) The bios on post checks finds only 2.92GB of ram
> 4) The Kingston KVR400 series modules are recommended by Intel for
> the D865PERL mobo.
> 5) I ran memtest86+ on the system. The program found no errors but
> only found 3 memory slots.
> 6) I installed lm-sensor. i2c-tools and modprobed the eeprom kernel
> module. This allowed me to run decode-dimms. This program reads the SPD
> information off of each of the memory modules. This program found all 4
> modules. The listing for all 4 modules were identical with the exeption
> of the serial numbers. The results from the 4th module was:
>
> ---=== SPD EEPROM Information ===---
> EEPROM Checksum of bytes 0-62 OK (0xA9)
> # of bytes written to SDRAM EEPROM 128
> Total number of bytes in EEPROM 256
> Fundamental Memory type DDR SDRAM
> SPD Revision 1.0
>
> ---=== Memory Characteristics ===---
> Maximum module speed 400MHz (PC3200)
> Size 1024 MB
> Voltage Interface Level SSTL 2.5V
> Module Configuration Type No Parity
> Refresh Rate Reduced (7.8 us) -
> Self Refresh
> tCL-tRCD-tRP-tRAS 3-3-3-8
> Supported CAS Latencies 3T, 2.5T
> Supported CS Latencies 0
> Supported WE Latencies 1
> Minimum Cycle Time 5 ns at CAS 3
> 6 ns at CAS 2.5
> Maximum Access Time 0.65 ns at CAS 3
> 0.7 ns at CAS 2.5
>
> ---=== Manufacturing Information ===---
> Manufacturer Kingston
> Manufacturing Location Code 0x04
> Part Number K
> Manufacturing Date 2008-W46
> Assembly Serial Number 0x6E146732
>
>
> Number of SDRAM DIMMs detected and decoded: 4
>
> At this point I strongly suspect that the bios is defective. My next
> move is to reburn it.
>
> Gary R
--
Stan
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