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Simon Schampijer wrote:
| Chris Ball wrote:
| Hi,
|
| Can anybody suggest a relatively functional Joyride with the new UI
| ? I'm at the end of a think pipe, and probably won't have time to
| download a second image if the first is
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Benjamin M. Schwartz wrote:
| Simon Schampijer wrote:
| | Chris Ball wrote:
| | Hi,
| |
| | Can anybody suggest a relatively functional Joyride with the new UI
| | ? I'm at the end of a think pipe, and probably won't have time
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John Gilmore wrote:
| The IETF ZeroConf protocols provide for self-assignment of IP
| addresses in such a case. (The same thing happens if you plug two
| laptops together with a short Ethernet cable and no DHCP server.)
|
| Does the OLPC Presence
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Bernie Innocenti wrote:
| They asked me if there would be problems for Turkey and I
| thaid that while I did not know their IP law, I hear it's
| not a problem in many European countries.
|
| Do you know better?
Read this:
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Ricardo Carrano wrote:
| Assuming this is correct, than some questions follow.
| - Is 4 a reasonable limit (is the XO capable of more in terms of processing
| and memory?)
The XO is definitely capable of more, especially for activities like Chat
that
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Olivier Bélanger wrote:
| Is there a way to let all TamTam activities have access to a common
| directory?
No. Activities are untrusted code. The security design assumes that
every Activity is a trojan horse, unless the user specifically requests
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Carol Lerche wrote:
| A good example is the rococco color picking widget. According to my
| observation this is very difficult for small children to use, and to learn.
Perhaps you would care to look at
http://wiki.laptop.org/go/Designs/Toolbars#11
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Marco Pesenti Gritti wrote:
| It depends on the contents of the rpm. In some cases you would need to
| rebuild...
|
OK, how about instructions starting with a SRPM?
- --Ben
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A paper called Freezing More Than Bits: Chilling Effects of the OLPC XO
Security Model will be presented next Monday at USENIX UPSEC'08 [1]. The
author has kindly posted the paper at [2], which I discovered after Google
took me to her weblog [3].
It
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Ryan Crawford Comeaux wrote:
| I'm looking to build an application through Google's Summer of Code for the
| school server that uses wireless location detection methods to monitor and
| approximate the physical location of all nodes within the mesh.
|
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Rebecca Janine Wise wrote:
| This is a general question. I work with various Non-Profits and have become
| interested in developing for the XO. Can anyone recommend a path on how to
| become involved in some aspect of the software development side of
C. Scott Ananian wrote:
| On Sat, Mar 29, 2008 at 1:47 AM, Benjamin M. Schwartz
| [EMAIL PROTECTED] wrote:
| We will have an open discussion of how to build a framework that will
ease the
| creation of reliable collaborative activities. I will also outline a
proposal
| for Collisionless
Title: Frameworks for simultaneous and sequential collaboration
Abstract:
The OLPC sharing design encompasses two rough classes of sharing. In the
simultaneous case, a number of students join a shared Activity and all edit a
document together in real time. In the sequential case, students make
On Tue, 2008-03-25 at 13:46 -0400, Eben Eliason wrote:
Naturally, there are some security concerns, but those could be easily
addressed, I believe, with the usual signing mechanisms. Updates to
activities would only be transparent if the update was signed, etc.
I agree. For a first
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Deepank Gupta wrote:
| Q.1 The main difference between the toolkit and other stand-alone activities
| will be its integration with Sugar. All the other activities like Read or
| games are run on a use-to-use basis. But, this software will be run at
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Michael Stone wrote:
| * to the extent that we are able, we should record the compatibility
| matrix between builds and activities
Once upon a time, there was going to be a build called First Release to
Service, and its number was to be 1.
On Thu, 2008-03-13 at 15:59 -0400, C. Scott Ananian wrote:
Upgrade via
olpc-update will work fine, but you'll have to use the customization
key (without the four-button erase-everything step) or other mechanism
(download, unzip) to install the activities.
This is absolutely unacceptable for
On Wed, 2008-03-12 at 21:47 +0100, bert boerland wrote:
Dear All,
As a member of the Drupal community, I would like to see the Open
Source CMS Drupal ship on the OLPC.
The OLPC XO is virtually the worst possible server platform. It is
highly mobile, has little memory or disk space, usually
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Michael Stone wrote:
| It's completely unsafe to use the new USB customization keys to execute
| software located on-key or on-NAND because any opportunity for arbitrary
code
| execution as uid 0 represents a serious threat to our first-boot
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C. Scott Ananian wrote:
| On Fri, Mar 7, 2008 at 9:37 AM, Benjamin M. Schwartz
| [EMAIL PROTECTED] wrote:
| It is difficult to comment on this without more detail on USB
| customization keys. My understanding was that such customization would
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Michael Stone wrote:
| On Fri, Mar 07, 2008 at 10:11:06AM -0500, C. Scott Ananian wrote:
| Classic privilege-escalation attack.
|
| /, /home, and /home/olpc, are only writable by uids 0 and 500. Both uids
| 0 and 500 have direct access to uid 0.
On Tue, 2008-03-04 at 17:37 -0500, Michael Stone wrote:
On Tue, Mar 04, 2008 at 10:12:35AM +0100, Tomeu Vizoso wrote:
On Tue, Mar 4, 2008 at 6:54 AM, Benjamin M. Schwartz
[EMAIL PROTECTED] wrote:
Waqas Toor wrote:
| can anybody please see the log i am attaching and tell me is rainbow
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Michael Stone wrote:
| On Tue, Mar 04, 2008 at 06:16:34PM -0500, Benjamin M. Schwartz wrote:
| According to my software engineering professors, a program should
| always handle any input data without an assertion failure. Assertions
| are for catching
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Michael Stone wrote:
| On Tue, Mar 04, 2008 at 08:22:31PM -0500, Benjamin M. Schwartz wrote:
| Michael Stone wrote:
| | My central error-handling goal has been to compactly express my
| | assumptions in a form that will prevent them from being
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John Gilmore wrote:
| I recommend that once you have developer keys, you leave the machines
| unlocked. You are going to be running a lot of unsigned builds in the
| future -- you're customizing your builds.
Eventually, there must be a way for
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Waqas Toor wrote:
| Hello All,
|
| I am having a problem and unable to find any solution regarding that,
| I have written an activity in using GTK and glade, and have sugarized
| it according to the hello world tutorial in wiki. but still i dont
|
On Thu, 2008-02-28 at 16:25 -0800, Peter Krenesky wrote:
Are you using gstreamer or are you just accessing the camera with v4l?
If you do not change the parameters V4L will just use the current
settings that were set by the last program to use it.
-Peter
I'm using pyvideograb, which is
On Thu, 2008-02-21 at 10:18 -0500, Mikus Grinbergs wrote:
It appeared to me that the 'resume' following the suspension had
re-interrogated the SD card (was power to it turned off by suspend?)
and had somehow mixed up access to it. My recovery was to reboot.
This is bug #4013:
On Thu, 2008-02-21 at 15:21 -0600, Jameson Chema Quinn wrote:
The problem with left/right is that it is biased towards LTR languages
(or it requires extra L10N work), and it inevitably inconsistent with
the up/down axis necessary for lists.
When running in an Arabic locale (or other RTL
On Tue, 2008-02-19 at 12:29 -0500, Giannis Galanis wrote:
The avahi works is that every several minutes(a predetermined timeout)
each host will send multicast request for all peers in its list.
Then all peers receiving this request will send a multicast reply.
The packets are multicast
On Tue, 2008-02-19 at 10:02 -0500, John Watlington wrote:
We ALWAYS have multicast traffic. Blindly waking on each
received multicast packet will ensure that we only sleep for
milliseconds.
What is all this multicast traffic?
If I am sitting idle on the network, why is there constant
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I have created a stepwise procedure for experimenting with Bayer mode capture:
1. su -
2. yum install python-imaging
3. wget http://dev.laptop.org/~bemasc/bayertest.tar.gz
4. tar xzvf bayertest.tar.gz
5. cd bayertest
6. python bayertest.py
On Fri, 2008-02-15 at 16:24 -0500, Walter Bender wrote:
Has anyone used a USB bar code scanner on the XO? Any recommendations
as to a model we could use for an inventory project?
As you are probably aware, it is possible to read barcodes from the
camera, using software analysis. See for
On Thu, 2008-02-14 at 16:58 +0200, Morgan Collett wrote:
We're testing patches to Presence Service to not start salut (or stop
it) for a while to give gabble a chance to connect to the schoolserver.
(a) Touch all these activities now and port them to the newer cleaner
API offered by PS/Sugar
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[EMAIL PROTECTED] wrote:
however when we attempted to demo the measure activity we just could not
figure out how to make it work. we got it working three times over the
weekend (among a dozen or more tries).
we has laptops with the 650 build,
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Tomeu Vizoso wrote:
By the data in #5228, looks like more than 50% of time is spent
importing modules. dbus, telepathy and pygtk make for more than 30% of
_total_ startup time.
There has been much talk about fork()ing the python interpreter for
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ffm wrote:
On Feb 5, 2008 5:50 PM, Kent Loobey [EMAIL PROTECTED]
mailto:[EMAIL PROTECTED] wrote:
Can someone point me to a list of the OLPC Activity conventions.
http://wiki.laptop.org/go/HIG
If you have questions about the HIG or activity
On Thu, 2008-01-31 at 01:32 -0500, Arjun Sarwal wrote:
For some time I have been thinking about extending the functionality
of Measure Activity into a tool that also allows for graphical
analysis of data acquired not just from sensors/mic but data acquired
from any source.
(1) A standard
On Mon, 2008-01-28 at 08:34 -0700, Brown, Henry, DoIT wrote:
Could Matlab create Greene Chip DNA microarray software to run on
OLPC?
http://www.mailman.hs.columbia.edu/news/Lipkin_GreeneChip.html
http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=2573
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Walter Bender wrote:
5. Batteries: Carla Gomez Monroy reports from Mongolia that the
batteries are not lasting as long as expected. The extreme cold was
the first suspect. Richard had Carla collect data via olpc-logbat and
ran some tests of his
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[EMAIL PROTECTED] wrote:
after all the qwerty keyboard layout was designed to slow typing so that
the mechanical typewriters could keep up. there are better layouts for
typing (even some standardized ones like doevak) but the OLPC ships with
On Wed, 2008-01-23 at 11:47 -0800, Hal Murray wrote:
Yes, the resume operation is triggered by user input, or a wireless
packet addressed to the host (or some battery-related events). It
can't be triggered by anything in software unless that's organized
ahead of time; the CPU is turned
On Fri, 2008-01-18 at 14:47 -0500, Dan Williams wrote:
So wait, what's going on here? I thought the devices attached to school
servers were just run-of-the-mill USB 8388 devices like the 8388
daughterboard of the XO, but different connector, right?
What is the post-boot firmware flash
On Tue, 2008-01-15 at 13:45 -0500, Build Announcer Script wrote:
+make.i386 1:3.81-6.fc7
+openldap-servers.i386 0:2.3.34-4.fc7
+perl.i386 4:5.8.8-27.fc7
+perl-libs.i386 4:5.8.8-27.fc7
Perl? Really?
--Ben
___
Devel mailing list
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Jameson Chema Quinn wrote:
I'm still noodling around, trying to settle on a good design for
develop. It looks as if libglade would be nice to have.
Prior to this summer, I had never written a GUI. I was creating an Activity, so
I tried Glade and
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Sjoerd Simons wrote:
Activities need to cope with people coming going anyway. If your in a mesh
only
environment, the mesh can be split into two or more parts at any point and
later on merge again. Salut will model that as people disconnecting
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Samuel Klein wrote:
Benjamin M. Schwartz writes:
Samuel Klein wrote:
Yes, it would help to have distributed network services such as ones
that let you say join the next available connect/pong game
This is easy to implement within the current
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There has been a lot of discussion of video conferencing using the XO, and a
demo activity was created last year. However, our video codec of choice,
Theora, has not been able to encode fast enough to do real-time streaming at
acceptable quality.
As
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Samuel Klein wrote:
Yes, it would help to have distributed network services such as ones
that let you say join the next available connect/pong game
This is easy to implement within the current sharing framework. It just
requires each game to pair
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Dan Williams wrote:
It's not that hard to write an app that notices and handles IP address
changes. Not handling this in apps that are written for or ported to
the XO is just plain laziness. When porting or writing, you need to
handle the
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Walter Bender wrote:
http://wiki.laptop.org/go/Ask_OLPC_a_Question_about_Software#Include_Flash_Player.3F
but I want to be sure to be optimized with all the parameters of the
laptop (video performance, cpu, power management, etc.). We encode our
On Mon, 2008-01-07 at 13:11 +0100, NoiseEHC wrote:
Try to contact him, he ported TinyGL successfully:
http://lists.laptop.org/pipermail/devel/2007-June/005375.html
As a data point, Doom runs quite fast even at full resolution on a
B4. Have not heard reports on getting Quake running.
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Kent Loobey wrote:
1. I will have sound entries that will need to be translated. How do the
translators want this to be laid out for them.
Translators are not voice-actors.
There is no infrastructure in place for recording speech in many
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Jameson Chema Quinn wrote:
Does anyone know if it is possible for Sugar to support something like
this? That is, if it there's any way - either file-system-native or
through some strap-on - to safely hand a link to a process so that
(either
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Mitch Bradley wrote:
The part is rated for 100,000 *erase* cycles per block. There are 64
independently-writable 2K pages per block. Writing doesn't count in the
wear calculation - just erasing.
What does rated mean? Specifically, I imagine
I was intrigued by Turtle Art, and wanted to learn how to use it. I was also
bored, stuck in an airport after my flight was delayed. Therefore, I decided
to write a Mandelbrot Fractal generator in Turtle Art. You can see the result
here:
http://dev.laptop.org/~bemasc/mandelbrot/Screenshot.png
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Gerard J. Cerchio wrote:
Sorry to say that I am having a terrifically hard time trying to use the
hippo canvas.
hippocanvas is sort of deprecated. Initially, hippocanvas was to be the basic
building block for all Activities, but it proved too
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Ivan Krstić wrote:
On Dec 18, 2007, at 12:27 PM, Jameson Chema Quinn wrote:
Has anyone looked at Psyco on the XO?
Psyco improves performance at the cost of memory. On a memory-
constrained machine, it's a tradeoff that can only be made in
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Asheesh Laroia wrote:
Right now, we have the formatted text in HTML format. I don't really want
to embed Mozilla, but is there a lightweight GTK HTML widget that I can
access from Python that is standard on the XO?
Not that I'm aware of.
If
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Joyride builds currently include my Acoustic Tape Measure activity, designed to
turn any pair of laptops into a tool for measuring distance. Today, I decided
to test the maximum range. I used two B4's running clean installs of joyride
289.
I went
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[EMAIL PROTECTED] wrote:
How high off the ground were the laptops? At ground height, with ears
up, the node to node transmission distance is very small. That's why
school server antennas will be mounted high.
The laptops were sitting directly on
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James Cameron wrote:
On Wed, Nov 14, 2007 at 02:45:31AM -0500, Benjamin M. Schwartz wrote:
2.5. Download: http://dev.laptop.org/~bemasc/StopWatchActivity-1.xo
Tested on build 625 on a B4, works okay, problems you probably already
know about
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Hal Murray wrote:
Obsessive accuracy.
What's your version of Obsessive? Seconds? Milliseconds? Microseconds?
I have no desire to do better than 0.01s. Human reaction times are an order of
magnitude slower than that anyway.
What I meant is, I
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1. Project name : Clock
2. Existing website, if any : None
3. One-line description : It's a clock.
4. Longer description : It shows 24-hour digital time, 12-hour analog
time, and auto-localized date. Digital time and analog
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1. Project name : StopWatch
2. Existing website, if any : http://dev.laptop.org/~bemasc/screenshot.png
2.5. Download: http://dev.laptop.org/~bemasc/StopWatchActivity-1.xo
3. One-line description : The most ludicrously awesome
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I am one of the many volunteer Activity developers. I believe my Activity
merits inclusion in the build. (For example, I feel it meets the Criteria for
Inclusion outlined by Walter in a past community newsletter.) I am sure many
other Activity
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Erik Blankinship wrote:
Record uses ip4-address, but we've just about completed Record Tubes
(and it is working great).
Should Activity developers assume that stream tubes will be available in both
Gabble and Salut by OLPC 1.0?
- --Ben
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Arjun Sarwal wrote:
Is there a way to explicitly request samples from Alsa using gstreamer ?
Not that I'm aware of. You could set up a gstreamer pipeline that writes raw
audio into a named pipe (FIFO), and then read the data out of the FIFO in
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