On Mon, September 8, 2014 1:50 pm, Bob Metelsky wrote:
> 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
>
>
> On Mon, Sep 8, 2014 at 2:37 PM, <m.roth@xxxxxxxxx> wrote:
>
>> Jonathan Billings wrote:
>> > I cut out the text of dmidecode that weren't necessary for the point:
>> >
>> > On Mon, Sep 08, 2014 at 01:52:43PM -0400, Bob Metelsky wrote:
>> >> dime910 /home/robert :( # dmidecode -t 17
>> >> # dmidecode 2.12
>> >> SMBIOS 2.3 present.
>> >>
>> >> Handle 0x1100, DMI type 17, 27 bytes
>> >> Memory Device
>> >> Locator: DIMM_1
>> >> Part Number: 64T256020EU2.5C2
>> >>
>> >> Handle 0x1101, DMI type 17, 27 bytes
>> >> Memory Device
>> >> Locator: DIMM_3
>> >> Part Number: CM2X2048-6400C5
>> >>
>> >> Handle 0x1102, DMI type 17, 27 bytes
>> >> Memory Device
>> >> Locator: DIMM_2
>> >> Part Number: CM2X2048-6400C5
>> >>
>> >> Handle 0x1103, DMI type 17, 27 bytes
>> >> Memory Device
>> >> Locator: DIMM_4
>> >> Part Number: 64T256020EU2.5C2
>> >
>> > 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.
>> >
>> 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
>>
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++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++
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