Yum Cant Find Kernel-pae

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Hi I have a dell 770
bios sees 8g

I beleive Ive
*vi /etc/yum.repos.d/CentOS-Base.repo*

*[CentOSplus]name

14 thoughts on - Yum Cant Find Kernel-pae

  • There isn’t a PAE kernel for x86_64. There isn’t a separate PAE kernel for i386/i686 anymore as with c6, PAE is an install requirement.

  • ok – good to know… so how can I get the computer to see teh 8 gb installed?

    dime910 /etc/yum.repos.d # free -m
    total used free shared buffers cached Mem: 3390 2415 974 0 169 1403
    -/+ buffers/cache: 842 2548
    Swap: 3998 0 3998

    much appreciated

  • Bob Metelsky wrote:

    Is this a 32-bit system? If not…

    free -g
    total used free shared buffers cached Mem: 1955 169 1786 0 0 153
    -/+ buffers/cache: 14 1941
    Swap: 7 0 7

    mark “yes, that really is 2TB”

  • I cut out the text of dmidecode that weren’t necessary for the point:

    I couldn’t find the Dell Service Manual for a ‘Dell 770’ but I was looking at the Service Manual for the Optiplex 760, and I saw that the way that the modules are paired isn’t obvious. It looks like you’ve got 2 2G memory modules from 64T256020EU2.5C2 (Kingston?) and 2 2GB
    modules from CM2X2048-6400C5 (Corsair?). I suggest finding your service manual, and make sure that the modules are placed in the DIMM
    slots and the same vendor RAM is paired with its partner.

    It sounds to me like there might just be something weird going on with how the memory is installed. I’m assuming you don’t have an artificial limit in the kernel command line or anything obvious like that.

  • Jonathan Billings wrote:
    Oh, Ghu…. I don’t know about lower-end desktops, but in servers, they
    *MUST* be *identical*, even to the point of not being able to mix dual rank with quad rank, even if everything else is the same.

    mark

  • Its dual channel and they are in the right spot, I reseated them

    1 pair in black
    1 pair in white

    So are you guys saying my kernel should be supporting more than 4gb?

  • BTW, what the command

    uname -a

    gives (sorry about trivial thing and if this has been checked already)?

    Valeri

    ++++++++++++++++++++++++++++++++++++++++
    Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247
    ++++++++++++++++++++++++++++++++++++++++

  • uname -a is in the original message.

    See to be a problem with the board

    any memory I put in the black slots will fail with memtest..

    damm

    I was hoping if the pc booted up with about that annoying memory beep – I
    was ok… I memtested and it failed

  • Bob Metelsky wrote:
    Um. Do you have all the white slots filled? But if they’re filled, and the white and black are each matched pairs, then it doesn’t sound good for the m/b.

    mark

  • its 64 bit – (first post)

    actually this is a dell 9100 (desktop)

    I had 2 pairs – 2gb each of ram different manufacturer actually I have 3 pairs of 2gb – any combination has the same results in memtest

    1 pair in white
    1 pair in black

    boots without memory beep errors memtest fails badly on any test with 8gb bios sees the memory

    I was running 2 2 gb originally now I have 4 1gb – so each slot is used and it tests perfect

    Basically this is a lab setup for a 4 node hadoop cluster. This is the head node and needs the most ram – Id really like to get 8 but Ill live with 4
    (if I have to)

    So should my kernel support > 4gb? see below

    Thank you all for your time!

    ~~~~~~~~~~~~~~~~~~~~~~~~~
    details dime910 /home/robert # uname -a Linux dime910.hadoop.lab 2.6.32-431.23.3.el6.CentOS.plus.x86_64 #1 SMP Wed Jul 30 00:12:13 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    dime910 /home/robert :( # dmidecode -t 17
    # dmidecode 2.12
    SMBIOS 2.3 present.

    Handle 0x1100, DMI type 17, 27 bytes Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM_1
    Bank Locator: Not Specified
    Type: DDR
    Type Detail: Synchronous
    Speed: 667 MHz
    Manufacturer: 7F7F7F7F7F510000
    Serial Number: 0820A113
    Asset Tag: Not Specified
    Part Number: 64T128020HU3SB

    Handle 0x1101, DMI type 17, 27 bytes Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM_3
    Bank Locator: Not Specified
    Type: DDR
    Type Detail: Synchronous
    Speed: 667 MHz
    Manufacturer: 7F7F7F7F7F510000
    Serial Number: 061D4B16
    Asset Tag: Not Specified
    Part Number: 64T128020HU3SB

    Handle 0x1102, DMI type 17, 27 bytes Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM_2
    Bank Locator: Not Specified
    Type: DDR
    Type Detail: Synchronous
    Speed: 667 MHz
    Manufacturer: 7F7F7F7F7F510000
    Serial Number: 061D4B12
    Asset Tag: Not Specified
    Part Number: 64T128020HU3SB

    Handle 0x1103, DMI type 17, 27 bytes Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: DIMM_4
    Bank Locator: Not Specified
    Type: DDR
    Type Detail: Synchronous
    Speed: 667 MHz
    Manufacturer: 7F7F7F7F7F510000
    Serial Number: 081FAF13
    Asset Tag: Not Specified
    Part Number: 64T128020HU3SB

  • Thanks for checking, Good chart, Ill save that. In that case, I can live with 4gb :)

    I appreciate all your guys input and time, thank you!

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