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Thread: AMD Phemom 9850 only shows up with 1 core?

  1. #1

    Default AMD Phemom 9850 only shows up with 1 core?

    Guys,

    I've got an AMD Phenom 9850 Quad Core Proc running on an ASUS M4N72-E MB. I've just recently run the HWInfo utility in KDE only to notice that it only thinks I've got 1 core.

    Anybody know where I can start to troubleshoot this problem?

    I can update my MB, but the chip was already supported when I bought it.

    Thanks,

    Joe

  2. #2
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    Default Re: AMD Phemom 9850 only shows up with 1 core?

    can you post dmesg output? also which kernel are you using?

  3. #3
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    Default Re: AMD Phemom 9850 only shows up with 1 core?

    Are you looking in My Computer ( konqueror sysinfo:/ )? Please don't mess with your BIOS / Mobo right now. Konqueror sysinfo:/ should show you 4 cores.

    If you're looking at matters through Yast - Hardware - hwinfo:
    this should show you 4 cpu's

    But, to help you we need some more information. Please copy and paste output of the commands below:

    cat /etc/SuSE-release

    uname -a

    su -c 'hwinfo --cpu'

    These commands have to be issued in a terminal (konsole) window. The third command will ask you for your root-password when executed.

    Good luck
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  4. #4

    Default Re: AMD Phemom 9850 only shows up with 1 core?

    Sorry I'm sure I should have posted more information.

    Yes I was looking through konqueror sysinfo:/ and it lists "AMD Phenom Quad Core Processor".

    If I look through yast it lists 1 cpu.

    As for my openSUSE version I'm running 11.1 (x86_64).

    As for my kernel version its "Linux Home 2.6.27.25-0.1-default #1 SMP 2009-07-01 15:37:09 +0200 x86_64 x86_64 x86_64 GNU/Linux"

    My cpu info is as follows:

    01: None 00.0: 10103 CPU
    [Created at cpu.301]
    Unique ID: rdCR.j8NaKXDZtZ6
    Hardware Class: cpu
    Arch: X86-64
    Vendor: "AuthenticAMD"
    Model: 16.2.3 "AMD Phenom(tm) 9850 Quad-Core Processor"
    Features: fpu,vme,de,pse,tsc,msr,pae,mce,cx8,sep,mtrr,pge,mca,cmov,pat,pse36,clflush,mmx,fxsr,sse,sse2,ht,syscall,nx,mmxext,fxsr_opt,pdpe1gb,rdtscp,lm,3dnowext,3dnow,constant_tsc,rep_good,nopl,pni,monitor,cx16,popcnt,lahf_lm,cmp_legacy,svm,extapic,cr8_legacy,abm,ss
    Clock: 2500 MHz
    BogoMips: 4999.85
    Cache: 512 kb
    Units/Processor: 4
    Config Status: cfg=no, avail=yes, need=no, active=unknown



    Thanks in advance,

    Joe

  5. #5
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    Default Re: AMD Phemom 9850 only shows up with 1 core?

    what does cat /proc/cpuinfo say?

  6. #6

    Default Re: AMD Phemom 9850 only shows up with 1 core?

    processor : 0
    vendor_id : AuthenticAMD
    cpu family : 16
    model : 2
    model name : AMD Phenom(tm) 9850 Quad-Core Processor
    stepping : 3
    cpu MHz : 1300.000
    cache size : 512 KB
    physical id : 0
    siblings : 1
    core id : 0
    cpu cores : 1
    apicid : 0
    initial apicid : 0
    fpu : yes
    fpu_exception : yes
    cpuid level : 5
    wp : yes
    flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs
    bogomips : 4999.85
    TLB size : 1024 4K pages
    clflush size : 64
    cache_alignment : 64
    address sizes : 48 bits physical, 48 bits virtual
    power management: ts ttp tm stc 100mhzsteps hwpstate

  7. #7
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    Default Re: AMD Phemom 9850 only shows up with 1 core?

    Could this be a hardware problem? Sure the processor shows up right with a LIVE-CD ?
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  8. #8
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    Default Re: AMD Phemom 9850 only shows up with 1 core?

    TheDelChop adjusted his/her AFDB on Wednesday 05 Aug 2009 14:06 to write:

    >
    > processor : 0
    > vendor_id : AuthenticAMD
    > cpu family : 16
    > model : 2
    > model name : AMD Phenom(tm) 9850 Quad-Core Processor
    > stepping : 3
    > cpu MHz : 1300.000
    > cache size : 512 KB
    > physical id : 0
    > siblings : 1
    > core id : 0
    > cpu cores : 1
    > apicid : 0
    > initial apicid : 0
    > fpu : yes
    > fpu_exception : yes
    > cpuid level : 5
    > wp : yes
    > flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca
    > cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
    > pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl pni monitor
    > cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a
    > misalignsse 3dnowprefetch osvw ibs
    > bogomips : 4999.85
    > TLB size : 1024 4K pages
    > clflush size : 64
    > cache_alignment : 64
    > address sizes : 48 bits physical, 48 bits virtual
    > power management: ts ttp tm stc 100mhzsteps hwpstate
    >
    >



    What board are you using and what options in the BIOS.

    Just a long shot here but I don`t suppose the cores are switching themselves
    off when not needed?

    I do know that this is a feature of the newer phenom II`s

    Do the cores show up in another OS?

    All the right settings in the BIOS?

    Can you start some CPU intensive tasks and see if they switch on.

    I am using an AM3 board but with only a paltry phenom II 710 and so this
    does not happen.

    HTH

    --
    Mark
    Caveat emptor
    Nullus in verba
    Nil illegitimi carborundum

  9. #9

    Default Re: AMD Phemom 9850 only shows up with 1 core?

    I'm using an ASUS M4N72-E MB, this is not a Phenom II, it is a regular Phenom 9850.

    I've never run CPU on another OS since I don't have one readily available, but I'll give another distro's Live CD a shot.

    I will try a CPU intensive task to see if the other cores come up while that's happening.

    I believe my BIOS is setup correctly, I have AHCPI disabled, and APIC disabled but most of my CPU settings are set to auto.

  10. #10

    Default Re: AMD Phemom 9850 only shows up with 1 core?

    Part of the reason I think this might be the OS not the hardware is the difference between the CPU info from the BIOS and the cpu info shown in /proc/cpuinfo.

    The MOBO recognizes the clock is 2500MHz but /proc/cpuinfo lists it at 1300MHz. This is obviously incorrect.

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