interesting new battery technology

2015-04-08 Thread John Watlington
Aluminum and Graphite, in an aqueous solution. Can’t wait till it hits the market! http://www.bbc.com/news/science-environment-32204707 ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

Re: [Sugar-devel] seeking help to enable nepali keyboard input for XO-4

2014-06-16 Thread John Watlington
Walter, You remember correctly. The hard/clicky/crunchy keyboards are not rated for as long a lifetime as the membrane/chewy keyboards. While the membrane keyboard design was tested to 5 million key presses, IIRC the clicky keyboard is only rated to 1 million key presses. (On the other

Re: [Sugar-devel] seeking help to enable nepali keyboard input for XO-4

2014-06-16 Thread John Watlington
On Jun 16, 2014, at 9:05 PM, Walter Bender wrote: On Mon, Jun 16, 2014 at 9:03 PM, John Watlington w...@laptop.org wrote: Walter, You remember correctly. The hard/clicky/crunchy keyboards are not rated for as long a lifetime as the membrane/chewy keyboards. While the membrane

Re: [Sugar-devel] seeking help to enable nepali keyboard input for XO-4

2014-06-16 Thread John Watlington
fingers get in the way of a full key depress. Then again, the keys aren't designed for me, so I'm curious how these do in the field. cheers, Sameer On Mon, Jun 16, 2014 at 6:03 PM, John Watlington w...@laptop.org wrote: Walter, You remember correctly. The hard/clicky/crunchy keyboards

Re: [Sugar-devel] XO on Fedora 20 (was Re: [GSoC] Porting To Python3)

2014-05-12 Thread John Watlington
On May 12, 2014, at 7:34 PM, James Cameron wrote: On Mon, May 12, 2014 at 10:08:41AM -0300, Gonzalo Odiard wrote: Probably you already know that, but xo-1 and xo-1.5 have a 8686 wireless card, different to the 8787 in the xo-4 Actually, XO-1 has 8388 and is soldered down card. XO-1:

Re: WiFi Problem

2014-05-09 Thread John Watlington
When doing this step: Release the '✓' (check) game pad key, and within ten seconds a Devel key Signature valid message will appear, with an open padlock icon, followed by Type the ESC key to interrupt automatic startup, Did you see a Devel key Signature valid message ? If you didn't,

Re: WiFi Problem

2014-05-05 Thread John Watlington
On May 5, 2014, at 4:49 PM, Juan Carlos Garcès Mariño wrote: I do not need upgrade to sugar 0.100, because I need have the XO with active security, really I need resolve this problem: the wifi have little power and not detected with easily the networks, I changed the network card and the

Re: Using a wifi dongle on an XO-1(.5) -- another dongle

2014-05-01 Thread John Watlington
On May 1, 2014, at 6:32 PM, James Cameron wrote: On Thu, May 01, 2014 at 03:56:32PM -0400, Nathan C. Riddle wrote: Found another Ralink device that works: RT5370. [...] Now, is there a device based on Ralink chips to replace the internal Libertas wireless module ? :) No, certainly not.

Re: Using a wifi dongle on an XO-1(.5) -- another dongle

2014-05-01 Thread John Watlington
On May 1, 2014, at 9:26 PM, James Cameron wrote: The miniPCIe form factor is frequently used for USB-based wireless cards as well, and XO laptops do provide USB signals at the appropriate pins although the shipped wireless card doesn't use it. I couldn't prove they were connected, on the

Re: [Server-devel] XSCE install on cubox

2014-04-22 Thread John Watlington
George, thanks for doing this! On Apr 22, 2014, at 11:48 AM, George Hunt wrote: Just a small step, but XSCE 5.0 now installs on Cubox. Start with Tim's image, and comment out ajenti in roles/core/meta/main.yml. I re-rolled xs-moodle, ds-backup to use cronie rather than vixie-cron, and

[Server-devel] XMPP

2014-04-22 Thread John Watlington
Just a quick question: has anybody gotten the XOs to collaborate properly with an XMPP server other than ejabberd ? wad ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel

Re: EC, CForth exploratory commands?

2014-04-13 Thread John Watlington
On Apr 13, 2014, at 2:13 PM, Paul Fox wrote: martin wrote: Yesterday I ran a workshop covering some topics about hw development and mfg. Using a lot of material from Bunnie's blog, as well as from my time in the trenches. As part of it I tried -- and mostly failed -- to give folks a tour

Re: EC, CForth exploratory commands?

2014-04-13 Thread John Watlington
On Apr 13, 2014, at 9:19 PM, Jon Nettleton wrote: Otherwise you really need a jtag debugger. Or Open Firmware --- by far the nicest bringup tool I've ever had the pleasure to use. It was painful enough using the JTAG debugger to install Open Firmware. I would hate to spend weeks in it. wad

Re: EC, CForth exploratory commands?

2014-04-13 Thread John Watlington
On Apr 13, 2014, at 11:44 PM, Martin Langhoff wrote: But in the back of my mind I run through how would you use u-boot in bringup instead of ofw?. Before OFW, I used assembler code and C debugging shells (think peek/poke/test mem/run dedicated test functions/boot OS), but I last did than on

Re: EC, CForth exploratory commands?

2014-04-13 Thread John Watlington
On Apr 14, 2014, at 1:30 AM, Jon Nettleton wrote: But I do like having the bootloader right on the SDHC card. Virtually unbrickable. But it precludes any of the anti-theft mechanisms that most of OLPC's customers were looking for. (anti-theft = keeping the NSA off my laptop/router/TOR box)

Re: Announcing another early Android build for XO-4

2014-04-09 Thread John Watlington
Nice work. I think the touchscreen driver is busted. Open Firmware tracks two or three fingers nicely (if one avoids occlusions in X and Y), but multitouch test apps in Android confirm what I saw when trying to use Google Maps -- multitouch is currently broken in Android. Are bugs being tracked

Re: Announcing another early Android build for XO-4

2014-03-19 Thread John Watlington
On Mar 19, 2014, at 5:12 PM, ben wrote: On 03/20/2014 07:01 AM, Esteban Bordón wrote: Hi! Someone knows how take a screenshot in android? Is there any keys combination for do it in the XO? Android brings in a hot key combination for screenshot which is press the hard volume down and

Re: [Server-devel] constant power add-tag CP fails on XO-4?

2014-01-24 Thread John Watlington
On Jan 24, 2014, at 6:36 PM, Adam Holt wrote: We've relied on this for many years on XO-1s and XO-1.75s (etc) to ensure small XO servers auto-boot after the inevitable power failures -- and yet today it (apparently) no longer works. Is it possible this does not work on XO-4s, or are we

Re: using laptop charger

2013-12-11 Thread John Watlington
James is correct about 19V probably not working with an XO-1, but with an XO-1.75/4 you should be fine up to 24V. When running with an input voltage higher than 13V, the battery charger on the motherboard runs noticeably hotter. Still within spec at 19V and 45C ambient, but you might

Re: The mouse touch pad doesn't work on XO4

2013-11-21 Thread John Watlington
Seconding what Paul said, the touchpad on XO-4 should be fully functional. If you have one that isn't, I would first test it from Open Firmware (halt the laptop boot in Open Firmware --- at the ok prompt and type:test /mouse If that indicates a problem, see:

Re: [Sugar-devel] Private vs Public conversations.

2013-10-31 Thread John Watlington
On Oct 31, 2013, at 2:10 PM, Sameer Verma wrote: On Wed, Oct 23, 2013 at 9:04 AM, David Farning dfarn...@activitycentral.com wrote: I just wanted to bump this line of questions as, it is the critical set of questions which will determine the future viability of Sugar. If anyone as more

Thanks

2013-10-31 Thread John Watlington
Since I finally mentioned that OLPC and I had parted ways in an earlier email, I really need to thank the OLPC community for providing me with the opportunity to work with you for the past seven years. Reuben continues to provide outstanding deployment support for all XO laptops, and I will

Re: Android on the XO-4

2013-10-09 Thread John Watlington
On Oct 9, 2013, at 6:46 AM, Walter Bender wrote: Sorry for misleading the list. This is new information to me. Seems it is just a matter of doing the work then. It is I who need to apologize. This information was first communicated to me around a week ago and I hadn't shared it properly.

Re: Android on the XO-4

2013-10-08 Thread John Watlington
There is no Marvell bottleneck. Marvell has confirmed that they will provide the few binary blobs required compiled in the right way for Android on XO-4. We just need to provide the target version of Android. Cheers, wad On Oct 8, 2013, at 10:22 PM, Sameer Verma wrote: On Sun, Oct 6, 2013

Re: [IAEP] Sugar on Android via HTML5

2013-09-12 Thread John Watlington
On Sep 10, 2013, at 5:04 PM, Sameer Verma wrote: On Thu, Sep 5, 2013 at 7:51 PM, Caryl Bigenho cbige...@hotmail.com wrote: One of the things that makes Sugar the ideal learning platform for children (and youth) is the wonderful compatibility of so many of the Activities ... both from

Re: XO-tablet development? [Devel Digest, Vol 90, Issue 8]

2013-08-13 Thread John Watlington
On Aug 13, 2013, at 1:09 PM, Yioryos Asprobounitis wrote: Paul wrote: If not, which way the tablet/laptop development team is heading? don't know, sorry. OK, thanks. Hopefully someone that does will care to comment. It is lack of accurate knowledge of the future, not caring, that

Re: XO-tablet development? [Devel Digest, Vol 90, Issue 8]

2013-08-13 Thread John Watlington
By proposing that further development work be native to Android, you are locking the fruits of that labor away from: - Any child using a current XO laptop - Any child using any other Linux laptop, such as the millions of children in Brazil, Venezuela, Argentina, etc... - Any child using a

Re: [Server-devel] Root fs on XO1

2013-08-09 Thread John Watlington
Just to clarify a comment that James made: On XO-1, the qualification of the SD card interface was done by Quanta. They seemed to think it worked fine. When I started doing extensive testing of SD cards in preparation for using them in XO-1.5, I discovered that some XO-1s did not have a

Re: Potential XO serial adapter - MicroFTX

2013-07-18 Thread John Watlington
Added to http://wiki.laptop.org/go/Serial_adapters#Third_Party_Adapters On Jul 18, 2013, at 7:05 AM, James Cameron wrote: Saw this https://jim.sh/ftx/ ... with suitable configuration this could be used as a USB serial adapter for an XO. -- James Cameron http://quozl.linux.org.au/

Re: resurrected XO-1.5, died again

2013-07-03 Thread John Watlington
I'm tired of revisiting an issue that thankfully only affected less than a thousand production units (repaired under a catastrophic failure clause). Unfortunately, the effect on our developer community was disastrous, as they only received affected units. I'm willing to send an XO-4 to replace

Re: resurrected XO-1.5, died again

2013-07-01 Thread John Watlington
On Jul 1, 2013, at 6:24 PM, James Cameron wrote: I agree. I've found laptops with looser-than-i-would-like hinge and motherboard screws after children have been using them. The hinge screws that are uncovered by disassembly were the most interesting. There was a problem with the

Re: X0-4 (vivante) GPU driver development sponsoring

2013-06-26 Thread John Watlington
On Jun 26, 2013, at 9:21 AM, Christian Gmeiner wrote: I have heard that your X0-4 is powered by an Vivante GC1000 GPU. Cause of this fact I am looking for a partner to sponsor the development of etnaviv[1]. Together with the current maintainer we have a roadmap that looks like this:

Headphone volume adjustment

2013-06-24 Thread John Watlington
We have noticed that under Fedora 18 (13.2.0 os10 on XO-4), the headphone volume can't be adjusted to complete silence. Is this a bug ? (The speaker volume can be adjusted to silence.) Comments, por favor, wad ___ Devel mailing list

Re: Re (2): XO-1.5 build 885 no space in journal

2013-06-11 Thread John Watlington
On Jun 11, 2013, at 11:17 PM, peasth...@shaw.ca wrote: From: James Cameron qu...@laptop.org Date: Wed, 12 Jun 2013 11:54:36 +1000 Yes, another option is to buy 4 GB or 8 GB microSD cards and open each laptop to install them. But there's a small risk of them not working with the firmware

Re: School networks and electrical equipment damage

2013-06-06 Thread John Watlington
On Jun 6, 2013, at 3:58 PM, Daniel Drake wrote: Those of us familiar with setting up school networks (server + switch + APs) in some of our deployments will be familiar with the occasional loss of hardware, due to surges in the low quality electrical supply or whatever, even when the system

Re: School networks and electrical equipment damage

2013-06-06 Thread John Watlington
I considered sources such as James' theory, as well as someone connecting one of the ethernet cables to line voltage, and neither accounted for the level of damage you described. But I can't agree more with James' point about building from the ground up. The first thing we used to wire up in a

Re: [Server-devel] School networks and electrical equipment damage

2013-06-06 Thread John Watlington
On Jun 6, 2013, at 3:58 PM, Daniel Drake wrote: Those of us familiar with setting up school networks (server + switch + APs) in some of our deployments will be familiar with the occasional loss of hardware, due to surges in the low quality electrical supply or whatever, even when the system

USB Network Adapter recommendations

2013-05-12 Thread John Watlington
Can you recommend a particular USB network adapter for long term reliability ? I have been using the Zoltan USB adapters that Michail had manufactured for use with the XO, with ok performance. (I have been told that under heavy load they don't work as well.) After only a year of continuous

Re: video broken on 1.75?

2013-04-03 Thread John Watlington
They should be in an upcoming 13.2.0 build. wad On Apr 3, 2013, at 6:51 PM, Sameer Verma wrote: On Wed, Mar 20, 2013 at 11:59 AM, Tom Parker t...@carrott.org wrote: On 20/03/13 14:27, Sameer Verma wrote: I got the source from TED as a MP4 wrapper.

olpc-dev-kernel and yum update

2013-04-03 Thread John Watlington
This isn't a bug report, just an observation to keep anyone else from spending time on this known condition (cjb's comment was of course!): If you want to update a kernel on a 13.1.0/13.2.0 build, you must first run olpc-dev-kernel. Running it after doing the yum update kernel will result in a

Re: RAM in XO-1.75-models

2013-03-27 Thread John Watlington
On Mar 27, 2013, at 1:49 PM, Paul Fox wrote: ajay wrote: Hi all. As per http://wiki.laptop.org/go/XO-1.75, the RAM in XO-1.75 is DRAM memory: 512 MB or 1GB DDR3 dynamic RAMhttp://en.wikipedia.org/wiki/DDR3_SDRAM; Is there any specific criteria as to which models have 512 MB, and

Re: OS Builder output img ?

2013-03-25 Thread John Watlington
I thought you should set the dk manufacturing tag, but I just noticed that is only supported on XO-1 and 1.5! wp and ww are different tags, you can't just change the tag value with change-tag. wad On Mar 25, 2013, at 7:07 PM, James Cameron wrote: On Mon, Mar 25, 2013 at 06:50:00PM -0400,

Re: Customize default language with OS Builder

2013-03-24 Thread John Watlington
If you change the LO tag for a laptop before the first boot of an image, its value will get picked up and used. - Stop a boot in OFW by pressing the ESC key. - fs-update (or copy-image) the new image into place - Change the manufacturing tag: change-tag LO fr_FR.UTF-8 / only works if the same

Re: video broken on 1.75?

2013-03-19 Thread John Watlington
When using a block transform based video codec (MPEG-1/2/4, H.263/4, etc) the dimensions of the video being encoded/decoded should always be a multiple of the block size (8x8 in the above cases, although for MPEG 16x16 should be used.) To do otherwise requires serious contortions of the codec

Re: [support-gang] Customization Sticks fails on 13.1.0 12.1.0 for XO-1

2013-03-12 Thread John Watlington
On Mar 12, 2013, at 3:54 PM, Holt wrote: On 3/11/2013 10:08 PM, John Watlington wrote: Please don't redistribute secure laptops --- OLPC's policy since early 2009 has been to deprecate the security system. The exceptions have been deployments large enough to have dedicated support staff

Re: [support-gang] Customization Sticks fails on 13.1.0 12.1.0 for XO-1

2013-03-11 Thread John Watlington
On Mar 11, 2013, at 1:54 PM, Richard A. Smith wrote: On 03/11/2013 10:26 AM, Daniel Drake wrote: would have to be signed by OLPC or Reuben would have to give them a Haiti key thats installed via keyjector. This is not a new situation for us, and the approach we have taken in the past is

Re: [support-gang] Customization Sticks fails on 13.1.0 12.1.0 for XO-1

2013-03-11 Thread John Watlington
On Mar 11, 2013, at 10:44 PM, Richard A. Smith wrote: On 03/11/2013 10:08 PM, John Watlington wrote: Please don't redistribute secure laptops --- OLPC's policy since early 2009 has been to deprecate the security system. The exceptions have been deployments large enough to have

Re: Video on XO 1.75 (URGENT)

2013-03-05 Thread John Watlington
On Mar 5, 2013, at 3:41 AM, Tom Parker wrote: On 05/03/13 17:40, tkk...@nurturingasia.com wrote: I am making the transition from XO 1 to XO 1.75. I plug in a USB with some *.ogv to play on a FEW new XO1.75 (12.1.0 customised build 10 ). When I click on it some files will play but some

Re: Anything to be done about a blown XO-1 fuse

2013-02-04 Thread John Watlington
On Feb 4, 2013, at 8:18 AM, Christoph Derndorfer wrote: Hi again, while investing why an XO-1 wouldn't charge I discovered that the 2A fuse near the power plug seems to have been blown and was fixed by someone simply soldering over it (see the attached photo). Wow, first we've seen

Re: Cameras not working on XO-1s

2013-01-31 Thread John Watlington
On Jan 31, 2013, at 11:10 AM, Christoph Derndorfer wrote: Hi again, this may sound like a stupid question but how would one go about swapping out the camera modules? I couldn't find any instructions on the wiki on how to actually remove the motherboard from the chassis (probably one of

video of XOs in the Amazon

2013-01-30 Thread John Watlington
Wikipedia pointed me to this excerpt from an upcoming film, web. It shows kids with XOs in the Peruvian Amazon creating on Wikipedia: http://www.youtube.com/watch?v=1XPnH_rF9ksfeature=youtu.be Cheers, wad ___ Devel mailing list Devel@lists.laptop.org

Re: XO-4 lack of keyboard/mouse input - still happening?

2013-01-29 Thread John Watlington
On Jan 29, 2013, at 11:45 AM, Jon Nettleton wrote: On Tue, Jan 29, 2013 at 5:40 PM, Daniel Drake d...@laptop.org wrote: On Tue, Jan 29, 2013 at 10:34 AM, Jon Nettleton jon.nettle...@gmail.com wrote: I have seen this problem on both my machines today while testing. Sometimes just

Re: [IAEP] XO-4 Questions After Viewing CES video

2013-01-10 Thread John Watlington
On Jan 10, 2013, at 10:54 PM, Caryl Bigenho wrote: I finally found the video done by Giulia D'Amico today about the XO-4 at CES. Watch it and see if you also have questions. Below you will find some of mine. Add yours below and pass it on.

Re: [IAEP] XO-4 Questions After Viewing CES video

2013-01-10 Thread John Watlington
startling changes to the Journal. This is just a new spin on it. I don't know how to delete an entry from the Journal, do you ? Cheers, wad On Jan 10, 2013, at 11:46 PM, John Watlington wrote: On Jan 10, 2013, at 10:54 PM, Caryl Bigenho wrote: I finally found the video done by Giulia D'Amico

Re: [Techteam] Announcing Q7B11 for XO-4

2013-01-07 Thread John Watlington
On Jan 8, 2013, at 12:49 AM, James Cameron wrote: XO-4 C1 only: after upgrading to Q7B11 from Q7B10 or earlier, you should use this command once at the ok prompt: update-nn-flash This will update the touchscreen firmware to 0.0.0.10. XO-4 B1: A number of B1s have a tinted light

Re: [Testing] 13.1.0 release candidate 2 (build 21) released

2013-01-02 Thread John Watlington
On Jan 2, 2013, at 10:16 AM, Gonzalo Odiard wrote: This build now enables XO-4 idle suspend by default. This is still a work in progress, there are still various instabilities which may make this build feel more unstable than previous ones. You can disable automatic power management in

Re: dead wifi module? [Devel Digest, Vol 82, Issue 34]

2012-12-30 Thread John Watlington
On Dec 30, 2012, at 12:55 PM, Yioryos Asprobounitis wrote: Looks dead to me. I suggest: 1. remove external power cable and battery for five minutes, then test again, 2. remove and reseat the wireless card, (taking care with electrostatic discharge risk), Tried 1 and 2 with no

Re: HDMI port

2012-12-02 Thread John Watlington
On Dec 2, 2012, at 5:06 AM, Sameer Verma wrote: I was looking for a cable for the micro HDMI port on the XO4. I couldn't find it locally, so I bought it online. The connector is similar to a micro USB on my phone (size wise) but after plugging it into the XO, I realized that the connector

Re: 13.1.0 development build 12 released

2012-11-16 Thread John Watlington
More importantly, occasionally boot with two sources of power (battery and DC). Q7B01 should have been replaced automatically a number of builds ago. On Nov 16, 2012, at 6:16 PM, fors...@ozonline.com.au wrote: What version of Open Firmware? Q7B01

Re: 12.1.0 on XO-1 customization stick

2012-11-15 Thread John Watlington
On Nov 15, 2012, at 8:44 PM, Tony Anderson wrote: Hi, If I understand this: 1. Get a developer key for each laptop in the school. 2. Use the developer key to unlock each laptop. 3. Do a normal install of the build image. 4. Relock the laptop by removing the developer key on the XO

Re: OLPC XO 1.75 replace one of the 3 usb port with a mini hdmi

2012-11-08 Thread John Watlington
On Jan 19, 2011, at 6:48 AM, Andrew Puch wrote: Is the cost and form factor viable to replace one of the external usb ports with a mini hdmi Type C or D port ? Yes. We finally took your suggestion on XO-4. When students or teacher give talks it would be nice for them to show to the

Re: Multi-touch test activity

2012-11-04 Thread John Watlington
We got a new version of firmware from Neonode last week that improves things a small amount. I'm not sure what the state of the firmware auto-update it. One complication is that it was tuned for the tinted light guides, and doesn't work as well with the clear ones. I have some tinted light

Re: Sandisk extreme 32GB and 16GB dont initialize in XO-1.75

2012-10-18 Thread John Watlington
Based on that error message, my guess is that those Sandisk cards are the first to support +1.8V operation. The kernel is detecting this, but getting confused as it doesn't know how to turn on +1.8V power to the SD (it isn't supported by that motherboard). On XO-1.5, we supported operating SD

Re: My XO-1.5 Lights

2012-10-15 Thread John Watlington
The LED intensities reflect the voltage of the main power rail of the XO, saving a small amount of power. When the laptop switches from charging to discharging the resulting change in brightness is noticeable. This can either be a diagnostic tool or an annoying distraction. There should be

Re: XO-1.5's sudden death - oven resurrected!

2012-10-15 Thread John Watlington
On Oct 16, 2012, at 12:27 AM, Chris Leonard wrote: Having said that, in cases like the XO boards I think that we could and *should* know, at least the chemicals involved This link is the RoHS declaration for the XO-1. I have no knowledge of the potential changes in chemical composition

Re: SD Card bug? XO 1.75 (Repeat post)

2012-10-07 Thread John Watlington
On Oct 7, 2012, at 2:04 PM, RJV wrote: Bug? A SD card, with a .Rpm file, crashes the XO whereas any external device should only be used as a booting device if there is a boot image in it or is this an assumption in XO? We would need to know if your XO is in developer mode or locked

Re: sketchometry

2012-09-18 Thread John Watlington
It runs. The UI is non-intuitive enough that I didn't get very far. How can an HTML5 app be closed source ? It may not be free, and you may not be able to redistribute it, but it is HTML... wad On Sep 18, 2012, at 1:59 AM, Peter Robinson wrote: This is an interesting HTML5 geometry app

Re: Attempting to re-purpose former XO 1.5 4GB microSD cards.

2012-09-16 Thread John Watlington
No idea. I've done that any number of times with no problem from XOs, and even my Mac. wad On Sep 16, 2012, at 2:52 PM, Kevin Gordon wrote: Folks: I am to understand that any upcoming m/b upgrade to an XO 1.5 will perhaps come with an 8GB card, thus making the old 4GB card superfluous.

Re: ARM motherboards

2012-09-11 Thread John Watlington
On Sep 12, 2012, at 1:43 AM, Sameer Verma wrote: I was walking through a replacement workflow in my mind for my Jamaica and India projects, and I realized that if/once the upgrades are done, one would be left with several older working motherboards. What's to become of these? If someone

Re: ARM motherboards

2012-09-04 Thread John Watlington
On Sep 4, 2012, at 10:47 PM, Sameer Verma wrote: Hi gang! http://blog.laptop.org/2012/09/04/are-you-working-with-xo-laptops-that-need-an-upgrade/ So, is there a minimum number of motherboards that one has to buy? Pricing? Both answers should be available from the email listed in the

Re: [OLPC-AU] Retina display

2012-07-27 Thread John Watlington
Don't go there. It is hard to talk about the resolution of the PixelQi display. In BW mode, it is 1200 x 900.In color mode, it is something closer to 690 x 520, but the human visual system has much less color resolution anyway so it appears sharper. MLJ did a great job of matching the

Re: Engadget post on XO Touch

2012-07-26 Thread John Watlington
On Jul 26, 2012, at 11:09 PM, Sameer Verma wrote: www.engadget.com/2012/07/26/olpc-xo-touch-1-75-to-use-neonode-tech/ The post says as yet unreleased XO 1.75. What's the official status on the 1.75? Still as yet unreleased? It's been shipping for some time now. I don't know where they got

Re: Nandblasting not working in one xo

2012-07-09 Thread John Watlington
NANDBlaster uses a fixed transmit speed (modulation). If the signal budget for a laptop isn't sufficient to support that speed, it will fail to receive many packets. When using normal WiFi, the transmit speed (modulation) is decreased until reliable communication can be obtained --- therefore a

Outdoor Light Sensor

2012-06-13 Thread John Watlington
We are looking for a better place for the outdoor light sensor in a future laptop, where we have a chance to make minor changes in the mainframe tooling. The problem with the current location is: interference from LEDs (noticeably the storage LED, with which it shares a package and light-guide)

Re: [Server-devel] failed to register

2012-06-04 Thread John Watlington
On Jun 4, 2012, at 7:30 PM, John Watlington wrote: Adam, something is wrong with those addresses. The 18.nn.nn.nn subnet is owned by MIT. You shouldn't be using any of them.Perhaps you meant 172.18.nn.nn ? And I never got around to the second part of the comment. eth0 (the WAN port

Re: [Server-devel] failed to register

2012-06-04 Thread John Watlington
On Jun 4, 2012, at 8:35 PM, John Watlington wrote: I suspect that your ISP is assigning 172.18.196.1 to the XS, which is then confused as to where packets destined for 172.18.xx.xx should be routed. eth0 and the other interfaces on the XS should be in separate subnets. BTW

Re: Turtle Art sensor xo 1.75 range voltage

2012-06-01 Thread John Watlington
On Jun 1, 2012, at 9:24 PM, fors...@ozonline.com.au wrote: We should test the calibration again. Walter, Guzman Testing with TA140 It looks like the 1.75 audio circuit was changed between the preproduction and the ramp unit 1.75's Testing on SKU199 and SKU204, the impedance has gone

Re: XO-1 SD card access during boot-up

2012-05-30 Thread John Watlington
On May 30, 2012, at 3:42 AM, James Cameron wrote: Agreed. I meant a proper power cycle, not the type provided by XO-1 without supply discharge. My point is that it is hard to know if leaving the power on and using CMD0 is any better than turning the power off. We already have a delay in

Re: [OLPC Engineering] [Techteam] #11599 LOW 3-softw: Requesting new TS mode: DEVL

2012-05-21 Thread John Watlington
I was thinking that DEVL mode would trigger runin, with aggressive timing and 24 hour cycles. Richard is thinking about whether or not to keep the battery test. Cheers, wad On May 1, 2012, at 3:17 AM, Zarro Boogs per Child wrote: #11599: Requesting new TS mode: DEVL

USB cameras

2012-05-18 Thread John Watlington
Does anyone have experience trying to use a USB camera with an XO1.5/1.75 ? Cheers, wad ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

Re: Announcing Q2F10 for XO-1

2012-05-03 Thread John Watlington
On May 3, 2012, at 1:37 AM, Hal Murray wrote: ok dir u: says Can't open directory In case it matters, this USB drive is old, old, old... 16 MB. :) I took the discussion with James Cameron off-list to reduce clutter. For the archives and/or in case anybody is curious. The problem

Re: Switching to randomly generated hostnames

2012-05-02 Thread John Watlington
On May 1, 2012, at 6:49 PM, John Gilmore wrote: Currently, XO hostnames are set on first boot in the following format: xo-A-B-C Where A, B and C are the last 3 bytes of the MAC address expressed in hex. In Nicaragua we are seeing cases where XOs have no hostname set, both on XO-1 and

Asymmetric Multiprocessing

2012-04-30 Thread John Watlington
Can someone please enlighten me as to the current state of Linux and asymmetric multiprocessing ? A number of ARM SoCs on the market include both high performance and low power cores. Does Linux have a strategy for scheduling to these asymmetric processing units yet ? Cheers, wad

Re: Asymmetric Multiprocessing

2012-04-30 Thread John Watlington
On Apr 30, 2012, at 9:28 AM, Peter Robinson wrote: On Mon, Apr 30, 2012 at 2:23 PM, John Watlington w...@laptop.org wrote: Can someone please enlighten me as to the current state of Linux and asymmetric multiprocessing ? A number of ARM SoCs on the market include both high performance

Re: Asymmetric Multiprocessing

2012-04-30 Thread John Watlington
Thanks for the pointers. Sigh... As usual, our ability to build fun hardware has way outpaced computer science's ability to program it outside of simple manually partitioned examples. Cheers, wad On Apr 30, 2012, at 9:53 AM, Peter Robinson wrote: Various links below, in fact yesterday

Re: [PATCH runin] Port to systemd

2012-04-23 Thread John Watlington
Daniel, Are you sure about this ? Runin does not perform any first boot functions. IIRC Richard goes through great lengths getting X to start... Cheers, wad On Apr 23, 2012, at 11:46 AM, Daniel Drake wrote: On Mon, Apr 23, 2012 at 9:40 AM, Martin Langhoff martin.langh...@gmail.com wrote:

Re: [Server-devel] XS procurement recommendations (new hardware - Nosy Komba, Madagascar)

2012-04-18 Thread John Watlington
Just a quick reminder that we have XO-1.75 production units available for people who want to work on XS on ARM. Just fill out the form at: http://wiki.laptop.org/go/Contributors_program/Project_proposal_form and list XS on ARM XO as the project. If you have any problems getting one this

Re: [Server-devel] Looking for new low power server hardware candidate

2012-04-10 Thread John Watlington
Why not an XO-1.75 ? On Apr 10, 2012, at 8:04 PM, Martin Langhoff wrote: On Mon, Apr 2, 2012 at 2:03 AM, George Hunt georgejh...@gmail.com wrote: I left my fitpc2 and msi servers in the Philippines, hoping they would be pressed into service in a classroom situation. So now I'm in the market

Re: XO-1 to switch back to JFFS2

2012-04-04 Thread John Watlington
On Apr 4, 2012, at 10:37 PM, Martin Langhoff wrote: On Wed, Apr 4, 2012 at 5:33 PM, Daniel Drake d...@laptop.org wrote: Comments/objections? JFFS2 worked well enough when those laptops were built and tested! It's sad that this space (raw NAND filesystems) isn't seeing more attention from

Re: 11.3.1 development build 32 for XO-1.75, XO-1.5 and XO-1

2012-03-30 Thread John Watlington
os32 seems to dump core on XO-1.75 if the serial console is enabled either via the enable-serial value in olpc.fth or by holding down the check key. Bummer, wad On Mar 29, 2012, at 4:56 PM, Martin Langhoff wrote: This build brings fixes to powerd and OFW on all platforms. XO-1.75 gets a

Re: XO-1.75 OpenFirmware serial terminal

2012-03-28 Thread John Watlington
On Mar 27, 2012, at 5:52 AM, James Cameron wrote: This is a serial terminal implementation for an XO-1.75 using Open Firmware. Useful --- the computer science equivalent of the voltmeter. Educational --- I learned that OFW has structs, and some new primitives (/n, ukey). Credit to the

Re: coding 88W8388 firmware

2012-03-21 Thread John Watlington
On Mar 21, 2012, at 5:47 AM, lluvia_li...@lavabit.com wrote: Hi list, I'd like starting learning the skills for helping to write a firmware replace for the 88WW8388 chip. I was reading on the wiki, specially this entry http://wiki.laptop.org/go/88W8388 However, I don't know which is

Documentation

2012-03-21 Thread John Watlington
While on the topic of lack of documentation, I would like to thank John Gilmore for reminding us about unfulfilled promises and Harald Welte for working with Via to get the Programmer's Guide to the VX855 Companion Chip used in XO-1.5 publicly released. It is linked into the XO-1.5 wiki page:

Re: [PATCH] olpc.fth - grow the root filesystem partition on boot

2012-03-14 Thread John Watlington
On Mar 14, 2012, at 6:04 PM, James Cameron wrote: On Wed, Mar 14, 2012 at 08:37:23AM -0600, Daniel Drake wrote: On Wed, Mar 14, 2012 at 7:06 AM, Richard Smith rich...@laptop.org wrote: On Wed, Mar 14, 2012 at 1:35 AM, James Cameron qu...@laptop.org wrote: Grows the second partition so that

Re: [PATCH] olpc.fth - grow the root filesystem partition on boot

2012-03-14 Thread John Watlington
On Mar 14, 2012, at 7:29 PM, James Cameron wrote: fs-verify is used after fs-update in factory to ensure that the fs-update was successful. But the factory can use the correct size image (within a few tens of MB) in the first place, resulting in no change by the resize operation. We might

Re: [Server-devel] XS on XO

2012-02-29 Thread John Watlington
How is this work going ? On a somewhat related note, I was building a firewall/serve box from an XO-1.5 running os883, and ran into the problem that the stock kernel doesn't have enough of the netfilter options enabled (specifically CONFIG_IP_NF_TARGET_REJECT) to support either the firewall

Re: [Server-devel] A quick networking question

2012-02-29 Thread John Watlington
On Feb 29, 2012, at 10:05 AM, Samuel Greenfeld wrote: The example DHCP configuration linked likely should be updated to support multiple MAC address ranges. In addition to the 00:17:C4 prefix mentioned in that script, newer XOs may come with Wifi cards that have a 20:7C:8F prefix, and

Re: [Server-devel] A quick networking question

2012-02-28 Thread John Watlington
On Feb 28, 2012, at 1:05 PM, Holt wrote: Clarif: port 80 is (unfort) forwarded thru the XS, for all laptops that connect over Wifi. Traffic across all other ports (incl 443 = https) is thankfully blocked, though I've no idea why/how unfortunately ;) Sounds like your problem is squid.

Re: power saving available in different stages

2012-02-20 Thread John Watlington
Can you tell us which generation XO you are asking about ? They are all somewhat different. The backlight in all XO laptops draws 1W at full brightness. dim it, and you can save 40% of that. Blank it, and you save the full 1W, plus another 300 mW or so for the DCON and display electronics.

Re: [OLPC Engineering] [Techteam] B Test keyboards on eBay

2012-02-19 Thread John Watlington
Those keyboards are not usable with any OLPC laptop ever put into production. They are truly XO-1 B2 series keyboards. My guess is that someone was tasked with selling useless inventory... They won't even work with XO-1 B3/B4 pre-production laptops. I suggest that the Association contact

  1   2   3   4   5   6   >