Re: P5E MB slow POST
- From: Paul <nospam@xxxxxxxxxx>
- Date: Mon, 30 Jun 2008 13:51:40 -0400
Core2Duo wrote:
[snip][/snip]
A poster here, mentions a "37 second delay" when using ECC RAM. Are you
using ECC RAM perhaps ?
http://vip.asus.com/forum/view.aspx?id=20080121080220781&board_id=1&model=P5E&page=1&SLanguage=en-us
Yes I am using ECC RAM.
I experience a similar delay which points to the same cause (me thinks)
Btw, in that thread Petr notes "System won't start up, even the display is not initialized." - this is what I experience!.
He also notes "POST card shows POST code 55, but I don't know what means POST code 55 in today AMI BIOSes."
Do you know the meaning of POST code 55 Paul?.
A PCI POST card is a debugging device. It has a two digit display on it.
You plug it into PCI Slot #1, while debugging why the motherboard won't
POST properly. Some motherboards have the two digit display soldered to
the motherboard, so there is nothing to buy for those motherboards.
If the motherboard does not have the display, people charge from $20
to $100 for a POST card, with the $20 ones coming from Hong Kong via
Ebay.
The POST codes are "progress" codes, rather than error codes. Sort
of like driving on the highway, phoning a mate, and saying "I just
passed Brighton". Now, if your mate doesn't receive any further
phone calls, the assumption would be, you went off the road
just after Brighton.
The codes are here if you want them. Some boards actually have a
couple pages in the appendix, listing the POST code values for
the BIOS used, but even those are not always up to date. You can
still receive a "55", look it up, and see the dreaded "Reserved"
as associated with it. That would mean, the dummy who wrote the
BIOS, did not update the company documentation.
http://www.bioscentral.com
A possible theory for the ECC thing, is the BIOS code is
initializing the memory early in the POST sequence. Writing
to all the memory, would ensure any future reads would always
return a good ECC. If you try to probe a memory whose contents
are random (just after power up), the ECC error interrupt is
going to pop up a lot. (Although you can likely disable it,
and ignore RAM errors until the memory test the BIOS runs, is
completed.) I'm not saying the theory makes sense, from a
firmware design viewpoint, just that it might account for
a difference seen, between a customer with ECC RAM and one
with non-ECC RAM. Keep an eye out for BIOS updates, because
a BIOS update may fix it.
And file a report with Asus Tech Support. Make sure they understand
it is a BIOS issue, and nothing to do with the OS. If they are
actively working on BIOS development, they might fix it some day.
Paul
.
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