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Thread: Only 2.9 of 4 GB (Install ram) available

  1. #1
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    Exclamation Only 2.9 of 4 GB (Install ram) available

    This question was asked years ago, however I have a Toshiba Satellite L675 with 4 GB of ram installed.
    For some reason I can only see 2.9 GB available with 2.5 GB free.

    The previous forum discussed changing BIOS settings to allow for a software memory hole and a few other tweaks, however the BIOS on this pile of junk doesn't let me make any changes to the RAM, Power or pretty much any other settings.

    Does anyone know of any other way to get Ubuntu to see the full amout of installed RAM?

    * I tried running Centos 5.5 and it has too many issues with the video card and Fedora sees the full amount of RAM but requires to many modifications to get some of the hardware / software to work. So far Ubuntu has been the best solution, however I want to run VMWare from time to time and this will limit my abilities.

  2. #2
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    Re: Only 2.9 of 4 GB (Install ram) available

    Hello and welcome to the forums!

    Can you open a terminal and enter the following command, then post the output here?
    Code:
    free -m
    To create code tags, click the # button int the post tool bar, then paste the output in between the tags.
    Thank you for your contributions. "So long and thanks for the fish!"

  3. #3
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    Re: Only 2.9 of 4 GB (Install ram) available

    Hi and welcome to the forums!

    You have to use the PAE kernel. Ubuntu 10.04 or newer should automatically install it for you. If you are using an earlier version you have to install it manually.

    See: community/EnablingPAE

  4. #4
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    Ubuntu Development Release

    Re: Only 2.9 of 4 GB (Install ram) available

    That, or install 64 bit Ubuntu. I'm sure your system supports it, but better to make sure.
    Intel Core i7 970 6/12 (Cores/Threads) 3.2GHz 12MB Cache
    6GB DDR3
    1866MHz RAM | ATI Radeon HD 5770 1GB GDDR5
    60GB SSD
    (/) | 1TB 64MB Cache HDD (/home)
    Ubuntu Oneiric
    Ocelot 11.10 x64

  5. #5
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    Re: Only 2.9 of 4 GB (Install ram) available

    Thanks for all the input.... BTW - I am new to ubuntu but have been running linux since 1995 and have run pretty much ever release from RedHat to Madnrake, Fedora, Centos and Debian (now including Ubuntu).

    So far, I am most impressed with Ubuntu even though I was never much of a fan of Debian.


    Here is some of the info on my machine....

    Code:
    free -m
                 total       used       free     shared    buffers     cached
    Mem:          2947        896       2050          0         75        470
    -/+ buffers/cache:        350       2596
    Swap:        11998          0      11998
    
    uname -r
    2.6.35-24-generic
    
    I also generated this report using hardinfo....
    
    
    Computer Processor4x Intel(R) Core(TM) i3 CPU       M 350  @ 2.27GHz 
    Memory3017MB (471MB used)
    Operating SystemUbuntu 10.10 
    User Name dlcomm (dlcomm) 
    Date/TimeThu 20 Jan 2011 05:10:44 PM PST 
    Display Resolution1600x900 pixels 
    OpenGL Renderer Unknown X11 
    Vendor The X.Org Foundation 
    Multimedia Audio Adapter HDA-Intel - HDA Intel Input 
    Devices  Lid Switch
      Power Button
      
      AT Translated Set 2 keyboard
      Video Bus
      CNF9055
      SynPS/2 Synaptics TouchPad
     Printers No printers found
    SCSI Disks ATA TOSHIBA MK6465GS
    TSSTcorp CDDVDW TS-L633C
    Generic- Multi-Card
    
    Operating System 
    Version 
    Kernel Linux 2.6.35-24-generic (i686) 
    Compiled#42-Ubuntu SMP Thu Dec 2 01:41:57 UTC 2010 
    C Library GNU C Library version 2.12.1 (stable) 
    Default C Compiler GNU C Compiler version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5)  
    DistributionUbuntu 10.10 
    Current Session 
    Computer NameSatellite-L675 
    User Name dlcomm (dlcomm) 
    Desktop Environment GNOME 2.32.0 
    Misc 
    Uptime1 hour, 25 minutes 
    Load Average2.14, 2.16, 1.65 
    Kernel Modules Loaded Modules aes_i586 Rijndael (AES) 
    Cipher Algorithm, asm optimized aes_genericRijndael (AES) Cipher Algorithm 
    ip6table_filterip6tables filter table ip6_tablesIPv6 packet filter binfmt_misc
     ipt_MASQUERADEXtables: automatic-address SNAT iptable_nat
     nf_nat
     nf_conntrack_ipv4
     nf_defrag_ipv4
     xt_stateip[6]_tables connection tracking state match module nf_conntrack


    I hope this helps narrow down this issue!
    Last edited by uRock; January 21st, 2011 at 02:29 AM. Reason: added code tags for readability 8)

  6. #6
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    Re: Only 2.9 of 4 GB (Install ram) available

    you're running the 32bit version

    You can either run the PAE enabled kernel
    (it's a hack to enable >4Gb RAM on 32bit)

    or just run the 64bit version
    Code:
    while [ true ]; do CY=$(date +%y); CM=$(date +%m); if [ -n "$PY" ] && [ -n "$PM" ]; then echo "Ubuntu ${CY}.${CM} is the worst release ever"; echo "I'm going back to ${PY}.${PM}"; fi; PY="$CY"; PM="$CM"; sleep 182d; done

  7. #7
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    Re: Only 2.9 of 4 GB (Install ram) available

    I recommend installing 64bit. It'll be more snappy and it will be able to better utilize your RAM.

    Cheers,
    uRock
    Thank you for your contributions. "So long and thanks for the fish!"

  8. #8
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    Re: Only 2.9 of 4 GB (Install ram) available

    Thanks everyone..... since I am one who hates it when people don't follow up on the posts... I will try to not do that myself...

    I installed the PAE kernel and it now sees the full amount of RAM! I had a strange issue on the first boot where my glidepad was not working but a proper shutdown and restart of the machine cleared that issue.

    I think I will just install the 64bit version in any case but thanks to all for the input and suggestions.
    Last edited by uRock; January 21st, 2011 at 02:47 AM. Reason: My mistake

  9. #9
    James78's Avatar
    James78 is offline Extra Foam Sugar Free Ubuntu
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    Re: Only 2.9 of 4 GB (Install ram) available

    I have the same problem. 4GB of RAM, only 2.99GB being shown.. Using 64 bit.. Quite frustrating.

    free -m for anyone interested
    Code:
                 total       used       free     shared    buffers     cached
    Mem:          3008       2794        213          0        224       1654
    -/+ buffers/cache:        916       2092
    Swap:         4692         13       4679

  10. #10
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    Re: Only 2.9 of 4 GB (Install ram) available

    Quote Originally Posted by James78 View Post
    I have the same problem. 4GB of RAM, only 2.99GB being shown.. Using 64 bit.. Quite frustrating.
    different issue from OP
    most likely you have some component (integrated graphics) that's siphoning off your RAM
    (although 1Gb seems a bit excessive, but still quick google reveals mobos with 1Gb integrated graphics do exist, so...)
    Code:
    while [ true ]; do CY=$(date +%y); CM=$(date +%m); if [ -n "$PY" ] && [ -n "$PM" ]; then echo "Ubuntu ${CY}.${CM} is the worst release ever"; echo "I'm going back to ${PY}.${PM}"; fi; PY="$CY"; PM="$CM"; sleep 182d; done

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