Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I did some searching, and I have a processor that supports pae. It is red when I run cat /proc/cpuinfo | grep pae

I do have the 64 bit server version installed, however, I'm using a desktop. (That is just how I roll.)

When I started the computer, the boot screen sees the total 6G, so I think my motherboard supports it.

When I run free -m, I get a total of 3259. Also, I don't have an onboard video card. I read somewhere that sometimes to goes to that card.

uname -a #33~precise1-Ubuntu SMP the time x86_64 x86_64 x86_64 GNU/Linux

Let me know if you have any suggestions. I'm new to Linux and a bit lost.

# dmidecode 2.11
SMBIOS 2.5 present.

Handle 0x0005, DMI type 5, 24 bytes
Memory Controller Information
    Error Detecting Method: 8-bit Parity
    Error Correcting Capabilities:
        None
    Supported Interleave: One-way Interleave
    Current Interleave: One-way Interleave
    Maximum Memory Module Size: 2048 MB
    Maximum Total Memory Size: 8192 MB
    Supported Speeds:
        Other
    Supported Memory Types:
        DIMM
    Memory Module Voltage: 5.0 V
    Associated Memory Slots: 4
        0x0006
        0x0007
        0x0008
        0x0009
    Enabled Error Correcting Capabilities:
        None

Handle 0x0006, DMI type 6, 12 bytes
Memory Module Information
    Socket Designation: DIMM1
    Bank Connections: 0 1
    Current Speed: Unknown
    Type: DIMM
    Installed Size: 1024 MB (Double-bank Connection)
    Enabled Size: 1024 MB (Double-bank Connection)
    Error Status: OK

Handle 0x0007, DMI type 6, 12 bytes
Memory Module Information
    Socket Designation: DIMM2
    Bank Connections: 2 3
    Current Speed: Unknown
    Type: DIMM
    Installed Size: 2048 MB (Double-bank Connection)
    Enabled Size: 2048 MB (Double-bank Connection)
    Error Status: OK

Handle 0x0008, DMI type 6, 12 bytes
Memory Module Information
    Socket Designation: DIMM3
    Bank Connections: 4 5
    Current Speed: Unknown
    Type: DIMM
    Installed Size: 1024 MB (Double-bank Connection)
    Enabled Size: 1024 MB (Double-bank Connection)
    Error Status: OK

Handle 0x0009, DMI type 6, 12 bytes
Memory Module Information
    Socket Designation: DIMM4
    Bank Connections: 6 7
    Current Speed: Unknown
    Type: DIMM
    Installed Size: 2048 MB (Double-bank Connection)
    Enabled Size: 2048 MB (Double-bank Connection)
    Error Status: OK

Handle 0x0024, DMI type 16, 15 bytes
Physical Memory Array
    Location: System Board Or Motherboard
    Use: System Memory
    Error Correction Type: None
    **Maximum Capacity: 4 GB**
    Error Information Handle: Not Provided
    Number Of Devices: 4

Handle 0x0025, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x0024
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM1
    Bank Locator:  
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MHz
    Manufacturer: CE00000000000000
    Serial Number: 79312833
    Asset Tag: 020748
    Part Number: M3 78T2953EZ3-CE6 

Handle 0x0026, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x0024
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 2048 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM2
    Bank Locator:  
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MHz
    Manufacturer: 7FBA000000000000
    Serial Number: 00000000
    Asset Tag: 000000
    Part Number:                   

Handle 0x0027, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x0024
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM3
    Bank Locator:  
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MHz
    Manufacturer: CE00000000000000
    Serial Number: 7931280C
    Asset Tag: 020748
    Part Number: M3 78T2953EZ3-CE6 

Handle 0x0028, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x0024
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 2048 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM4
    Bank Locator:  
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MHz
    Manufacturer: 7FBA000000000000
    Serial Number: 00000000
    Asset Tag: 000000
    Part Number:                   
share|improve this question
    
PAE is irrelevant on the 64-bit kernel. What version of Ubuntu do you have installed? Are you absolutely certain it's 64-bit or 32-bit with PAE? Include the output of uname -a in your question please. –  dobey Apr 17 at 17:33
    
I'm sure. I debated for a long time before installing. However, I definately could have messed something up. –  user269964 Apr 17 at 17:38
    
Ubuntu 12.04 LTS –  user269964 Apr 17 at 17:38
1  
Please edit your original question and add the output of uname -a in the question above. –  user68186 Apr 17 at 17:42

1 Answer 1

up vote 2 down vote accepted

The amount you are seeing is usable. It is likely there is some reserved for video buffer.

Try

sudo dmidecode -t memory

see if that shows all 6

share|improve this answer
    
Looks like you have 6G there! –  paperhurts Apr 17 at 18:38
    
True, but this says that it doesn't matter. At least that is how I'm reading it.Handle 0x0024, DMI type 16, 15 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 4 GB Error Information Handle: Not Provided Number Of Devices: 4 –  user269964 Apr 17 at 18:55

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.