LinuxQuestions.org

LinuxQuestions.org (/questions/)
-   Linux - Hardware (https://www.linuxquestions.org/questions/linux-hardware-18/)
-   -   No DIMM Module Detected on Channel A (https://www.linuxquestions.org/questions/linux-hardware-18/no-dimm-module-detected-on-channel-a-4175482343/)

FredJones 10-27-2013 08:54 AM
No DIMM Module Detected on Channel A
 
I recently posted this data:

Code:
[fred@arch ~]$ sudo dmidecode -t 16
# dmidecode 2.12
SMBIOS 2.6 present.

Handle 0x0028, DMI type 16, 15 bytes
Physical Memory Array
        Location: System Board Or Motherboard
        Use: System Memory
        Error Correction Type: None
        Maximum Capacity: 16 GB
        Error Information Handle: 0x0029
        Number Of Devices: 2

[fred@arch ~]$ sudo dmidecode -t 17
# dmidecode 2.12
SMBIOS 2.6 present.

Handle 0x002B, DMI type 17, 28 bytes
Memory Device
        Array Handle: 0x0028
        Error Information Handle: 0x002C
        Total Width: 64 bits
        Data Width: 64 bits
        Size: 2048 MB
        Form Factor: DIMM
        Set: None
        Locator: CHANNEL A
        Bank Locator: CHANNEL A-DIMM 0
        Type: DDR3
        Type Detail: Synchronous
        Speed: 1333 MHz
        Manufacturer: Undefined     
        Serial Number: 00087874 
        Asset Tag: A1_AssetTagNum0
        Part Number: JM1333KLU-2G     
        Rank: 2

Handle 0x002E, DMI type 17, 28 bytes
Memory Device
        Array Handle: 0x0028
        Error Information Handle: 0x002F
        Total Width: 64 bits
        Data Width: 64 bits
        Size: 2048 MB
        Form Factor: DIMM
        Set: None
        Locator: CHANNEL B
        Bank Locator: CHANNEL B-DIMM 0
        Type: DDR3
        Type Detail: Synchronous
        Speed: 1333 MHz
        Manufacturer: Undefined     
        Serial Number: 0008AF96 
        Asset Tag: A1_AssetTagNum1
        Part Number: JM1333KLU-2G     
        Rank: 2

[fred@arch ~]$ sudo dmidecode -t bios
# dmidecode 2.12
SMBIOS 2.6 present.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
        Vendor: Intel Corp.
        Version: TCIBX10H.86A.0037.2010.0614.1712
        Release Date: 06/14/2010
        Address: 0xF0000
        Runtime Size: 64 kB
        ROM Size: 1024 kB
        Characteristics:
                PCI is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                Boot from CD is supported
                Selectable boot is supported
                BIOS ROM is socketed
                EDD is supported
                5.25"/1.2 MB floppy services are supported (int 13h)
                3.5"/720 kB floppy services are supported (int 13h)
                3.5"/2.88 MB floppy services are supported (int 13h)
                Print screen service is supported (int 5h)
                8042 keyboard services are supported (int 9h)
                Serial services are supported (int 14h)
                Printer services are supported (int 17h)
                ACPI is supported
                USB legacy is supported
                BIOS boot specification is supported
                Targeted content distribution is supported

Handle 0x0027, DMI type 13, 22 bytes
BIOS Language Information
        Language Description Format: Long
        Installable Languages: 1
                en|US|iso8859-1
        Currently Installed Language: en|US|iso8859-1

[fred@arch ~]$ sudo dmidecode -t system
# dmidecode 2.12
SMBIOS 2.6 present.

Handle 0x0026, DMI type 12, 5 bytes
System Configuration Options
        Option 1: To Be Filled By O.E.M.

Handle 0x0031, DMI type 32, 20 bytes
System Boot Information
        Status: No errors detected

Handle 0x0001, DMI type 1, 27 bytes
System Information
        Manufacturer:                                 
        Product Name:                                 
        Version:                                 
        Serial Number:                                 
        UUID: FA8443A7-7ABC-DF11-8211-001A9239FA9B
        Wake-up Type: Power Switch
        SKU Number: Not Specified
        Family: Not Specified
in another post along with:

Code:
sudo sudo dmidecode -t 2
# dmidecode 2.12
SMBIOS 2.6 present.

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
        Manufacturer: Intel Corporation
        Product Name: DH55PJ
        Version: AAE93812-302
        Serial Number: BTPJ037001W3
        Asset Tag: To be filled by O.E.M.
        Features:
                Board is a hosting board
                Board is replaceable
        Location In Chassis: To be filled by O.E.M.
        Chassis Handle: 0x0003
        Type: Motherboard
        Contained Object Handles: 0
and this link to intel.com indicates "Support for up to 8 GB of system memory".

As a result of the excellent advise I got there, I purchased two new Kingston 240 pin DDR3 SDRAM DIMM 1333MHz 4 GB modules and attempted to install them. Then I saw this however:

Code:
sudo dmidecode -t 17
# dmidecode 2.12
SMBIOS 2.6 present.

Handle 0x002B, DMI type 17, 28 bytes
Memory Device
        Array Handle: 0x0028
        Error Information Handle: 0x002C
        Total Width: 64 bits
        Data Width: 64 bits
        Size: No Module Installed
        Form Factor: DIMM
        Set: None
        Locator: CHANNEL A
        Bank Locator: CHANNEL A-DIMM 0
        Type: Unknown
        Type Detail: Synchronous
        Speed: Unknown
        Manufacturer: A1_Manufacturer0
        Serial Number: A1_SerNum0
        Asset Tag: A1_AssetTagNum0
        Part Number: Array1_PartNumber0
        Rank: Unknown

Handle 0x002E, DMI type 17, 28 bytes
Memory Device
        Array Handle: 0x0028
        Error Information Handle: 0x002F
        Total Width: 64 bits
        Data Width: 64 bits
        Size: 4096 MB
        Form Factor: DIMM
        Set: None
        Locator: CHANNEL B
        Bank Locator: CHANNEL B-DIMM 0
        Type: DDR3
        Type Detail: Synchronous
        Speed: 1333 MHz
        Manufacturer: Kingston       
        Serial Number: 650C99EF 
        Asset Tag: A1_AssetTagNum1
        Part Number: 9905403-438.A00LF
        Rank: 2
which is depressing--my Channel A is empty? OK, I'm not quite as stupid as I look--I tried to debug. I switched the positions of the new 4G modules, but got the same result. Then I put a 2G in the A channel (and left the new 4G in B) and got the same result. Then I put back the 2Gs in both A and B and still Channel A is empty. This is what I had before--a 2G in A and B and it worked. Now A is not detecting the module. :(

So either I am really stupid and not installing the module in A correctly, even though I think I am doing the same thing as B or perhaps I broke my Channel A.

Any suggestions as to what to do now?

aus9 10-30-2013 05:34 AM
Hi

since you are posting I assume you have access to another computer or a distro that works with 2G?

Personally I would put one stick only into slot A ---start with your existing 2 g sticks
set your bios to non-fast
---normally this means it does a full check of RAM

If the first stick is not recognised you will get 0 ram right?
then try the other 2 g stick

############
look closely at your bios settings.
some setting I forget the name, allows you to have a matched pair
--if unmatched this setting may well force you to have only double A
############
then try a 4G only then the other 4 G

2) In case it helps can you link to your motherboard pls

3) how many slots does the mobo have?

eg google shows
http://forum.crucial.com/t5/Standard...339/td-p/23975

4) it is also possible you may need to reset your bios
one way is to remove the battery
wait at least 30 seconds
next short the battery terminals with something metallic but not touching other bits.
----naturally turn off the computer leave the lead inserted
---touch the psu fan box with your hand if you have no anti-static strap


########### but you being able to read your motherboard manual is probably the safest tip


All times are GMT -5. The time now is 03:50 PM.