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Thread: Were did i lose 1GB memory?

  1. #1

    Default Were did i lose 1GB memory?

    i have just installed 2x2GB DDR2 667 bars in to my toshiba laptop. started it up only to see that my system finds only 3GB
    i started up Kinfocenter and KDE system guard and both show me that i have only 3GB of memory. where did i lose my 1GB???
    please help me find it....very please.

  2. #2
    Join Date
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    Default Re: Were did i lose 1GB memory?

    Can u see all 4GB at BIOS?
    "Keyboard not found. Press any key to continue"

  3. #3

    Default Re: Were did i lose 1GB memory?

    yes..in bios total memory is 4096mb...

  4. #4

    Default Re: Were did i lose 1GB memory?

    ok....i've been reading around and it seems that 32bit systems are limited to use 3gig of memory. if this is true then this life sucks. i just payed €34 per 2gig bar of memory. i could have just bought one 2gig bar and replace my 1gig bar with it, saving €34...... i don't have €34 lying arround you know....i'm very sad
    Last edited by kartveli; 26-Jul-2008 at 09:15. Reason: typos

  5. #5
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    Default Re: Were did i lose 1GB memory?

    ok....i've been reading around and it seems that 32bit systems are
    limited to use 3gig of memory. if this is true then this life sucks. i
    just payed €34 per 2gig bar of memory. i could have just bought
    one 2gig bar and replace my 1gig bar with it, saving €34......
    i don't have €34 lying arround you know....i'm very sad
    Hi
    Sounds like your processor doesn't support the pae flag. Are you not
    running the pae kernel? Can you check if the flag exists;

    Code:
    cat /proc/cpuinfo |grep flag
    
    and
    
    uname -a
    http://en.wikipedia.org/wiki/Physical_Address_Extension

    --
    Cheers Malcolm (Linux Counter #276890)
    SLED 10 SP2 i586 Kernel 2.6.16.60-0.25-default
    up 1 day 5:02, 1 user, load average: 0.19, 0.24, 0.18
    GPU GeForce Go 6600 TE/6200 TE Version: 173.14.09


  6. #6

    Default Re: Were did i lose 1GB memory?

    hi,
    this is output of cat /proc/cpuinfo:
    Code:
    cat /proc/cpuinfo | grep flag
    flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc arch_perfmon bts pni monitor est tm2 xtpr
    flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc arch_perfmon bts pni monitor est tm2 xtpr
    and this is my uname:
    Code:
    Linux nikoshiba 2.6.25.11-0.1-pae #1 SMP 2008-07-13 20:48:28 +0200 i686 i686 i386 GNU/Linux

  7. #7
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    Default Re: Were did i lose 1GB memory?

    hi,
    this is output of cat /proc/cpuinfo:

    Code:
    --------------------

    cat /proc/cpuinfo | grep flag
    flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr
    pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
    constant_tsc arch_perfmon bts pni monitor est tm2 xtpr
    flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr
    pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
    constant_tsc arch_perfmon bts pni monitor est tm2 xtpr
    --------------------

    and this is my uname:

    Code:
    --------------------

    Linux nikoshiba 2.6.25.11-0.1-pae #1 SMP 2008-07-13 20:48:28 +0200
    i686 i686 i386 GNU/Linux
    --------------------
    Hi
    Hmmm, I would have thought you would have been ok then running the pae
    kernel and having the flag. What is the output;
    Code:
    free
    
    and
    
    dmesg |grep Mem
    It's not a dual boot system, if so boot into the other OS and check
    the memory.

    Else try a live linux cd and run the two commands with a
    different kernel (wonder if its a kernel error??)

    --
    Cheers Malcolm (Linux Counter #276890)
    SLED 10 SP2 i586 Kernel 2.6.16.60-0.25-default
    up 1 day 5:46, 1 user, load average: 0.43, 0.70, 0.57
    GPU GeForce Go 6600 TE/6200 TE Version: 173.14.09


  8. #8

    Default Re: Were did i lose 1GB memory?

    there is one more thing... could anyone also check if there system configured same way? please... i'm interested in output of:
    cat /boot/config-2.6.25.11-0.1-pae | grep HIGHMEM
    Code:
    cat /boot/config-2.6.25.11-0.1-pae | grep HIGHMEM
    # CONFIG_NOHIGHMEM is not set
    # CONFIG_HIGHMEM4G is not set
    CONFIG_HIGHMEM64G=y
    CONFIG_HIGHMEM=y
    # CONFIG_DEBUG_HIGHMEM is not set
    i think my problem is in "# CONFIG_HIGHMEM4G is not set" part

  9. #9

    Default Re: Were did i lose 1GB memory?

    Quote Originally Posted by malcolmlewis View Post
    Hi
    Hmmm, I would have thought you would have been ok then running the pae
    kernel and having the flag. What is the output;
    Code:
    free
    
    and
    
    dmesg |grep Mem
    this is outputs you asked for:
    Code:
    free
                 total       used       free     shared    buffers     cached
    Mem:       3114004     818728    2295276          0      42600     437128
    -/+ buffers/cache:     339000    2775004
    Swap:      4200988          0    4200988
    
    
    
    dmesg | grep Mem
      HighMem    229376 ->   786032
      HighMem zone: 4348 pages used for memmap
      HighMem zone: 552308 pages, LIFO batch:31
    Memory: 3107572k/3144128k available (1953k kernel code, 35236k reserved, 1676k data, 264k init, 2226624k highmem)
    pcmcia: parent PCI bridge Memory window: 0xf0900000 - 0xf09fffff
    pcmcia: parent PCI bridge Memory window: 0xc4000000 - 0xc7ffffff
    It's not a dual boot system, if so boot into the other OS and check
    the memory.
    well...i'm suse only
    Else try a live linux cd and run the two commands with a
    different kernel (wonder if its a kernel error??)
    i will try that when i get home...
    thnx

  10. #10
    Join Date
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    Default Re: Were did i lose 1GB memory?

    Hi,

    just read this post while browsing trough the mailing list.

    I had a similar question with my laptop, based on an Intel 945 chipset.

    I found out, that using this chipset you can only use approx. 3 GB of RAM, regardless of using an 32 or 64bit system. It's an hardware limitation. You'll find details in the technical specification provided by Intel.

    Hope this helps,

    user 2304.

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