[support-gang] intermittent keyboard mismapping: 13.2.5 on XO-1 SKU39

[Gonzalo Odiard]

I don't think the error reported by Alan is related with the last (or
latest) builds at all.
This is related to a very old bug, I was looking but couldn't find the
ticket.

Gonzalo

On Tue, Aug 4, 2015 at 1:07 PM, Caryl Bigenho <cbigenho at hotmail.com> wrote:

> Hi…
>
> So…  the XO-1s at the project we have at a school at a women's shelter in
> central Los Angeles will be updated in the next couple of weeks, getting
> ready for September school start. What would be the safest build for them
> to use? I won't be there to help, but it is in good hands with one of our
> SoCal volunteers. I just want to make it easy for everything to go smoothly.
>
> Thanks,
> Carul
>
> ------------------------------
> Date: Tue, 4 Aug 2015 09:28:23 -0400
> From: holt at laptop.org
> To: support-gang at lists.laptop.org; devel at laptop.org
> Subject: Re: [support-gang] intermittent keyboard mismapping: 13.2.5 on
> XO-1 SKU39
>
>
> Just an update that I've narrowed in on the/a pattern which triggers the
> problem, with the help of James Cameron, and some workarounds:
>
>    - Tapping the ESC key very rapidly during bootup causes the keyboard
>    mismapping (and hence, failure to enter Open Firmware).
>    - Holding down the ESC key during bootup (generally, but not always)
>    avoids the problem (entering Open Firmware).
>    - Typing no keys at all during initial bootup, appears (I hope) to be
>    a workaround to boot the OS properly, with keyboard functioning properly.
>
> Better yet, earlier firmware (e.g. q2e41 in this case) does not appear to
> show the problem at all, so newer firmware may be available in future to
> solve this annoying-but-less-serious-that-I-imagined problem.  For all
> using SKU39 XO-1s (or perhaps other/similar XO laptops having the modern
> touchpad?)
>
> On Mon, Aug 3, 2015 at 7:03 PM, Adam Holt <holt at laptop.org> wrote:
>
> I haven't figured out the pattern yet, but perhaps 50% of the time these
> XO-1s boot with an unusable keyboard (it's a "US Intl" keyboard, but the
> keys end up mapped to all the wrong places, showing the wrong
> letters/numbers, such that not even the ESC key works to get to the Ok
> prompt).
>
> This pattern arises with "vanilla" 13.2.5 (without SD cards) as well as
> 13.2.5 with SD cards.  In other words both of these:
>
>    http://wiki.laptop.org/go/Release_notes/13.2.5#XO-1
>    http://wiki.laptop.org/go/Release_notes/13.2.5#XO-1_with_SD_card
>
> Running the "bye" command at the Ok prompt seems to trigger the problem
> almost every time (possibly every time?).  But that is not the only thing
> that triggers the problem.  Sometimes the XO just boots with unusable
> keyboard, repeatedly.  Then when I try to hit ESC on boot 20 times in a
> row, I cannot reproduce the problem at other times.  Problem occurs on all
> SKU39 XO-1s I've tried so far.
>
> I've not yet tried other SKU's.  My testing has only just begun, to see if
> this same problem occurs with (both) 13.2.4 OS's and earlier.
>
> Any tips for debugging / identifying the source of this quite serious
> gremlin?  What should I and my small team of debugging volunteers look out
> for and try?  And I'll do more work on this when I get back home late
> tonight, but all thoughts appreciated-
>
> (Also, any recommendations as to which older builds are best, as an
> interim workaround?)
>
> --
> Unsung Heroes of OLPC, interviewed live @ http://unleashkids.org !
>
>
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