[coreboot] Postcode at Lenovo x230

[Rafael Machado]

Hi Kyösti

Thanks a lot for the detailed answer!!..
I would never imagine that it was possible to find this schematics on the
internet.
With your answer this start to make much more sense.

I'll spend some time trying to understand everything you said :)

Thanks a lot again!
Rafael Machado




Em sex, 16 de fev de 2018 20:58, Kyösti Mälkki <kyosti.malkki at gmail.com>
escreveu:

> Hi Rafael
>
> On Fri, Feb 16, 2018 at 2:03 PM, Rafael Machado
> <rafaelrodrigues.machado at gmail.com> wrote:
>
> > The problem is that this time, with this x230, after I connected the
> > postcard and turned the system on, the system stopped to boot. And the
> post
> > card does not stop at a specific post code.
>
> These cheap POST80 displays do not use PCI-e signalling. Looking at
> Wistron Dasher-2 schematics that to my knowledge is (a/the) x230
> mainboard, required LPC signals are not routed to either of the
> mini-PCI-e slots. There is a separate (unpopulated) connector CN14 and
> card-edge GF1 to use for post80 display.
>
> > What happens now, is that every time I turn the system on, the battery
> led
> > blinks 3 times, being two blinks followed by a 1 second stop and after
> that
> > the last blink, and the system reboots.
>
> :(
>
> > The post card I'm using is this:
> >
> https://www.ebay.com/itm/3in1-Mini-PCI-E-PCI-LPC-Tester-PC-Desktop-Diagnostic-Post-Card-Error-Code-Test/191862585496?hash=item2cabe6b898:g:x8MAAOSw2x1XKB5E
>
> I have one these as well. That mini-PCI-e card-edge is not so great,
> it is missing pads for pins 1 and 2. It also appears to be narrower
> what the specs says, so you need to be very careful with proper
> alignment on installation. Also have laptop battery removed while
> doing so!
>
> >
> > So my questions are:
> >
> > -Does someone believe this postcard could have bricked the system? (Why?)
> > -Any idea about how to solve that?
>
> I would measure the 3.3V power rail on the mainboard (VCC3WLAN) . If
> you had installed the postcard improperly/skewed to the socket you
> could have caused some shortcut to GND and damaged the on-board power
> circuitry. Other than that, I don't see how this post card could harm
> a x230.
>
> Hope this helps,
> Kyösti
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.coreboot.org/pipermail/coreboot/attachments/20180218/fae59a89/attachment.html>