Re: XO-1.5 network disconnection button testing

Thanks to the testers, this change has been merged and included in Sugar
0.84.15 and can be found in os117 (which is not yet announced).  I've
tested it again, and it works.  I'd like to know if people with secured
access points also find it to work.

--

-- 
James Cameron
http://quozl.linux.org.au/

slides from solar talk (ongoing now)

Low-Cost Solar Charge Controller with the Maximum Power Point Tracking 
for the Developing World

by Robert Pilawa, MIT Solar Researcher & PhD Student
http://www.slideshare.net/metasj/olpc-apr-4-2010

Re: slides from solar talk (ongoing now)

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Re: [OLPC/Paraguay] Debugging NetworkManager-0.7.2.995 + Power Management

Very sorry for the late response, here is the messages log and gdb
backtrace log!

Hopefully it will be helpful :)

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firmware Q3a35e

I have an 1.5 pre-release firmware I'd like some wider testing on. 
Please install this on your 1.5 and run some charge/discharge cycles on 
your battery.

http://dev.laptop.org/~rsmith/q3a35e.rom

There's a few minor changes in OFW from this and q3a35 mostly the 
addition of some commands that let you enable and disable EC MPPT and 
observe whats going on.

The real changes are in the EC code.  The introduction of MPPT [1] into 
the firmware required deep structural changes to the battery & 1-wire code.

While I was ripping everything apart I also implemented some of the more 
invasive changes I had planned.

If I got everything right you should see zero difference between battery 
operation on a35 and a35e except that some bugs are fixed.

I've been running this code on all of my test machines for the past 2 
weeks churning through lots of charge/discharge cycles with no problems, 
but I won't be surprised if there's still a few regressions waiting to 
surface.

Although this firmware has the ability to do MPPT when connected to a 
solar panel its disabled by default.  The reasons for that are:

1) I'm the only person who as a XO properly modified for MPPT to work.
2) Its not quite ready yet.  It backs off the power sometimes when it 
should not.

The point of this pre-release is to get some wider testing of the new 
battery code and not MPPT.  I'll announce when the MPPT stuff is ready.

[1] http://en.wikipedia.org/wiki/Mppt

Thanks.

--

-- 
Richard A. Smith  <richard <at> laptop.org>
One Laptop per Child

USB keyboard replacement

I have been installing USB keyboards in a few XO-1.5s, and took
a recent opportunity to document the process:

http://wiki.laptop.org/go/XO_1.5_USB_Keyboard

Cheers,
wad

Re: [OLPC/Paraguay] Debugging NetworkManager-0.7.2.995 + Power Management

On Mon, 2010-04-05 at 17:34 -0300, mabente wrote:
> Very sorry for the late response, here is the messages log and gdb
> backtrace log!
> 
> Hopefully it will be helpful :)

Yes, quite.  Please try:

https://admin.fedoraproject.org/updates/NetworkManager-0.7.2.996-1.fc11,NetworkManager-vpnc-0.7.2.996-1.fc11,NetworkManager-openconnect-0.7.2.996-1.fc11,NetworkManager-pptp-0.7.2.996-1.fc11,NetworkManager-openvpn-0.7.2.996-1.fc11

and let me know if that fixes the problem.  The upstream fix for the
issue is:

0.7.x: http://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?h=NETWORKMANAGER_0_7&id=e44e908747edc8eb61506bb29e7ac24292f7565c
0.8.x: http://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=a7e3d2acc29d3e7c267298df9a19a514ca628b37

Thanks!
Dan

Re: USB keyboard replacement

> I have been installing USB keyboards in a few XO-1.5s.

To me, sounds complicated.  I've been using an external USB keyboard all
along, and the XO drops power on the USB bus when it suspends.

When the XO has only an USB keyboard, and suspends -- the user would
need to "tap" the keypad to be able to type again.

mikus

 p.s.  BTW, I like the external Adesso AKB-110W USB keyboard.
       It is only three inches wider than the XO, and fits into
       the pack I use for carrying my XO.

Re: USB keyboard replacement

mikus wrote:
 > > I have been installing USB keyboards in a few XO-1.5s.
 > 
 > To me, sounds complicated.

it is.  very.  i've watched wad do it.  and redo it.  
it might even be more complicated than that page makes it look!
i modified my own G1G1 XO a couple of years ago in a similar
fashion.  but i wasn't as careful, and the plastic case now has
stress cracks showing up in several places due to the force i had
to use to cram everything back together.  wad has done a much better
job of making things fit properly.

 > I've been using an external USB keyboard all
 > along, and the XO drops power on the USB bus when it suspends.
 > 
 > When the XO has only an USB keyboard, and suspends -- the user would
 > need to "tap" the keypad to be able to type again.

yes.  in theory XO-1.5 has the ability to wake on USB events.  it's
on my todo list to see if that can be made to work properly.

the laptops being modified by wad are proof-of-concept prototypes
to see how that sort of keyboard might work for deployments to
older students.  if they were to become "real", the keyboard
would not be connected via USB.

 >  p.s.  BTW, I like the external Adesso AKB-110W USB keyboard.
 >        It is only three inches wider than the XO, and fits into
 >        the pack I use for carrying my XO.

certainly i wouldn't choose the micro keyboard that we've been able
to fit into the XO case as an external keyboard if i had a choice.
it's useable, but still too small.  and it lacks a right-hand shift key.

paul
=---------------------
 paul fox, pgf <at> laptop.org

Review of our application

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