Re: Yum cant find kernel-pae

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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?



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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