Re: [FFmpeg-devel] Temporary delays in patch reviewing and testing by me

[Kieran Kunhya <kierank@obe.tv>]

On Fri, 22 Dec 2023, 00:36 Michael Niedermayer, <michael@niedermayer.cc>
wrote:

> On Thu, Dec 21, 2023 at 03:22:20AM +0100, Michael Niedermayer wrote:
> > Hi all
> >
> > My main development machiene died today, so expect increased delays
> > about things that involve me/it until thats fixed
> >
> > Rest of the mail is just about the issue, and you can skip reading that
> >
> > Timeline:
> > box suddenly stopped, no reaction to any input or pings
> > power off and on did not bring it back, screen stayed dark, keyboard too
> > but fans spin up and theres power
> > opening it up i find it stuck on Q-code "0d" so i power it off
> > wiggle the ram modules a bit power it back on and it gets stuck on
> > qcode "15" i power cycle again and it reaches bios setup, so i go over
> all
> > values and just look but as i look, it hangs hard again
> > off/on again and we hit "0d" again
> > so i remove one of the CPU fans to get to the DIMM modules and
> reconfigure them like this:
> > B1A1 0+2 -> boot ok
> > B2A2 0+2 -> boot ok
> > B2A2 1+3 -> 0d
> > B2A2 0+3 -> boot ok
> > B1A1 1+2 -> 0d
> >
> > This is consistent with DIMM module 1 being faulty. But iam not 100%
> convinced
> > because this box never crashed not once, it was always rock solid and
> suddenly
> > one module is so faulty the box hangs so early.
> > Either way i ordered 4 new and bigger modules from 2 independant shops
> > they should be here soon but i dont know what "soon" is around christmess
> >
>
> > also i could try running it with just 2 modules, i might try that
> > tomorrow
>
> system seems working stable with 2 DIMM sticks
>

You should get comparable memory bandwidth with 2 sticks or 4 on consumer
grade systems. The differences are minor.

If you need to know which stick is bad memtest will tell you.

Kieran

>
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