Friday, August 17, 2018

Re: SuperMicro A2SDi-4C-HLN4F

Fri, 17 Aug 2018 11:15:32 +0000 Rupert Gallagher <ruga@protonmail.com>
> FUD
>
> Sent from total and utter ignorance.

Rupert,

Plus the dmesg you posted is by the RAM disk installation OpenBSD kernel.
You Should complete an actual OpenBSD installation to get the full dmesg.

> On Fri, Aug 17, 2018 at 12:24, <lists@wrant.com> wrote:
>
> > Fri, 17 Aug 2018 06:23:23 +0000 Rupert Gallagher <ruga@protonmail.com>
> >> Using the serial over lan console, the keyboard keeps working, and it is possible to enter the shell. Using the standard console, the keyboard does not work. There is plenty of drivers that need to be written. No, I do not write/port drivers.
> >>
> >> By comparison, both freebsd and centos linux just work out of the box. Both dmesgs are attached as reference.
> >>
> >> The board is really nice.
> >>
> >> On Thu, Aug 16, 2018 at 18:04, Rupert Gallagher <ruga@protonmail.com> wrote:
> >>
> >> > https://www.supermicro.com/products/motherboard/atom/A2SDi-4C-HLN4F.cfm
> >
> > Hi misc@,
> >
> > This one is much quieter, the vendors have reacted to the previous flaw.
> > As nice as it can get.. before trusting non-technical reviews, be aware:
> >
> > https://en.wikipedia.org/wiki/Goldmont#Erratum
> > https://www.servethehome.com/another-atom-bomb-intel-e3800-bay-trail-atom-vli89-bug/
> > https://www.google.com/search?q=intel+c3000+bug
> >
> > Recurring issue - similar problems were discussed noisily industry wide:
> >
> > https://en.wikipedia.org/wiki/Silvermont#Erratum
> > https://www.servethehome.com/intel-atom-c2000-series-bug-quiet/
> > https://www.servethehome.com/intel-atom-c2000-c0-stepping-fixing-the-avr54-bug/
> > https://www.google.com/search?q=intel+c2000+bug
> >
> > As with the previous generation processors and main boards, Intel FAILS.
> > Wait for updated CPU revision boards, consult techs and prepare for RMA.
> >
> > Kind regards,
> > Anton Lazarov

"Similar to previous Silvermont generation design flaws were found in
processor circuitry resulting in cease of operation when processors are
actively used for several years. Errata named

APL47 System May Experience Inability to Boot or May Cease Operation

and

APL48 System May Experience Non-functioning GPIO Weak Pull-up Circuitry

were added to documentation in June 2017 stating:

The Low Pin Count (LPC), Real-Time Clock (RTC), Secure Digital (SD) card
and General-Purpose Input/Output (GPIO) interfaces may stop functioning.

The documents cited in the Wikipedia article, see for current versions..
that apply to the later CPU stepping models, if any, as time progresses:

https://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/pentium-celeron-n-series-j-series-datasheet-spec-update.pdf
https://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/atom-c3000-family-spec-update.pdf

APL47 Problem: Under certain conditions LPC, SD card and RTC circuitry
may stop functioning in the outer years of use.

APL48 Problem: When platform drives the GPIO pin low, GPIOs programmed
with weak pull-up circuitry may not maintain a value above VIH when not
actively driven in outer years of service."

Some other "interesting" errata:

APL23 HD Audio Recording May Experience a Glitch While Opening or
Closing Audio Streams

APL25 USB Device Controller Incorrectly Interprets U3 Wakeup For Warm
Reset

APL27 USB 2.0 Timing Responsiveness Degradation

APL50 System May Unexpectedly Shut Down When Software Requests a Reset

APL53 Warm Reset May Result in System Hang or Unexpected System
Behaviour

Keep your eyes open and.. expect some more technical Atom CPU findings.

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