Re: multilingual googletalk
Le vendredi 25 janvier 2008 à 13:29 -0600, Todd Kelsey a écrit : Hi - you may already know about this but evidently as of mid december you can now invite chat bots into googletalk, in order to have instant messaging conversations with people in different languages. (widget version also supports group chat). Don't know how these bots work but the Chat activity is already using XMPP/Jabber when XO's are connected to Internet. So there is no need to create yet another chat activity. G. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: New joyride build 1591
Le samedi 26 janvier 2008 à 05:38 +, [EMAIL PROTECTED] a écrit : On Fri, 25 Jan 2008, Build Announcer v2 wrote: http://xs-dev.laptop.org/~cscott/olpc/streams/joyride/build1591 Changes in build 1591 from build: 1590 this build appears to break WEP (I upgraded from build 689) That's probably this bug: http://dev.laptop.org/ticket/5485 G. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: status of GRUB on XO
On Mon, Jan 28, 2008 at 09:52:10AM +0100, Marco Gerards wrote: - Missing some parts of AT keyboard driver (arrows don't work). Is this a general issue with your driver? For arrow keys you need to process multiple scancodes, IIRC. Yes. Other keys that are composed in the same way aren't captured either. Should be trivial to fix but I haven't had time so far :-/ - Can only access SD cards (via OFW callbacks), in any of the filesystems supported by GRUB. Accessing the NAND or USB drives will require adding new drivers (I expect the latter will come soon, since it is also needed on i386-pc). What kind of interface does the NAND drive have? ATA? ;-) No way, there's no room for legacy cruft in such a small laptop ;-) - Supports serial terminal (I couldn't try this on real hardware, but I assume it works). So this is not an issue now? Real hardware has a serial port, but only if you have an adaptor (which I don't). - Loader only supports Multiboot2 images for now. There are multiboot kernels already? :-) I wrote two of them, hang.S and crash.S. They aren't very useful but serve as testcase most of the time. -- Robert Millan GPLv2 I know my rights; I want my phone call! DRM What use is a phone call… if you are unable to speak? (as seen on /.) /* Trivial multiboot2 program. gcc -fno-builtin -nostdinc -m32 -nostdlib -Wl,-N -Wl,-Ttext -Wl,0x10 -o hang hang.S */ .file startup.S .text .globl _start _start: jmp _start .long 0xe85250d6 .long 0 .long -0xe85250d6 /* Trivial multiboot2 program. gcc -fno-builtin -nostdinc -m32 -nostdlib -Wl,-N -Wl,-Ttext -Wl,0x10 -o crash crash.S */ .file startup.S .text .globl _start _start: .long 0xe85250d6 .long 0 .long -0xe85250d6 ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [PATCH] RFC: ReadActivity fullscreen, paging changes
Hi, On Sun, 2008-01-27 at 17:42 -0600, Klaus Weidner wrote: On Sun, Jan 27, 2008 at 02:17:04PM -0500, Michael Stone wrote: While I can't say how your efforts will wind up being used, I very much want to thank you for stepping up to work on these issues and for submitting such clear patches. You're welcome, I'm happy if I can contribute something to such a cool project :-) Keep up the hard work, and let everyone know if you'd like help packaging your changes (to ease testing) or in working with the upstream maintainers of Read and Evince. I've bundled up the activity and library and put them on my web server, in case anyone wants to test them: http://www.pocketworkstation.org/xo/ The activity is a normal .xo bundle. For the shared library, extract it from the '/' directory: tar xvzf libevince-*.tar.gz Yes, I'd like help who to contact and how best to submit changes for the upstream code. In general, having the proposed patches attached to an existing ticket in trac is the best way. This puts the patches in context, help with tracking and will probably reach the maintainer faster. See http://wiki.laptop.org/go/Sugar_Patches . That said, I think it makes sense to post the patches to the mailing list if some discussion needs to happen. In this concrete case, we still miss a decision about how we want to express this new functionality in the UI. We have had already some discussion in this list about the different approaches we can take, but before we can accept an implementation, Eben should specify clearly how he thinks it should be implemented. If I understand it right, the evince library currently used is temporarily forked, and I'm not sure which parts of it are ready to be upstreamed. I can separate out the scrolling-backwards-in-noncontinuous-mode fix which I've reproduced in the desktop evince, so that could be submitted separately to the original evince project. Yes, I haven't looked in detail at your patches, but if it was possible to add this feature to Read without modifying evince, it would be much better. We don't want to maintain this fork of evince forever, so we try to maintain the differences to a minimum because at some point we'll need to merge with upstream. Have you already considered handling the key binding in ReadActivity._key_press_event_cb() instead? Thanks, Tomeu ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Tentative Plans for Nepal's School Server and related infrastructure
Ivan Krstić [EMAIL PROTECTED] writes: On Jan 22, 2008, at 10:28 PM, Bryan Berry wrote: We really need the incremental backup feature. That is a core requirement that came up many times in last week's OLPC Learning Conference. I'll see about finishing it up for you, then. Please ping me from time to time to make sure this doesn't drop off my radar. Just out of curiosity: would having the XOs periodically (cron) rsync-over-ssh /home/olpc to the school server be hopelessly naive for some reason? ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: firmware q2d10
I upgraded to the joyride version with this firmware, couldn't reach my network, so rebooted to 689, repeated the process with 690, same WEP problem so rebooted to 689 where I had the problem reported above. WEP is broken since (about) 653. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Battery charging and display intensity in joyride-1594
G1G1 program (thanks guys) upgraded to joyride-1594 firmware Q2D10 Plugged in after about 2 hours of use just sitting there on the sugar screen that shows what apps are running. Battery shows not charging (it did when I first plugged it in). Putting mouse over battery symbol, and it is says battery fully charged. But the charge light is still amber, It used to go back to green (or yellow). Second issue.. Not touching the system, the display intensity keeps jumping up and down. I am still on AC, no need to dim the display, it is just a bit annoying. Thanks for the good work. Mark ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
New joyride build 1600
http://xs-dev.laptop.org/~cscott/olpc/streams/joyride/build1600 Changes in build 1600 from build: 1597 Size delta: 0M -Read 41 +Read 42 --- Changes for Read 42 from 41 --- + Add mimetypes for djvu/tiff -- This mail was automatically generated See http://dev.laptop.org/~rwh/announcer/joyride-pkgs.html for aggregate logs See http://dev.laptop.org/~rwh/announcer/joyride_vs_update1.html for a comparison ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [OLPC library] 'OLPC-Health' takes off !!- MATLAB for OLPC?
The person to ask about this is Cleve Moler [EMAIL PROTECTED], the original author of MATLAB. On Jan 28, 2008 8:34 AM, Brown, Henry, DoIT [EMAIL PROTECTED] wrote: OLPC + MATLAB - Tricorder for developing world 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 http://laptop.org/ http://www.sciencedaily.com/releases/2008/01/080121100909.htm If the MATLAB software could run on OLPC it could be used to monitor disease in the field. I worked with AIDS patients and child nutrition programs while in the Peace Corps. We saw kids die every week from RSV and dehydration caused by diarrhea. We did not know what antibiotic to give. OLPC could use MATLAB software to integrate DNA array results to diagnosis. An expert system similar to Mycin could then be used to diagnose disease in the field via the web. http://en.wikipedia.org/wiki/Mycin Henry Brown [EMAIL PROTECTED] cell 795-3680 office 505 827-2509 From: [EMAIL PROTECTED] on behalf of Arjun Sarwal Sent: Fri 1/25/2008 4:23 PM To: [EMAIL PROTECTED]; devel@lists.laptop.org Subject: 'OLPC-Health' takes off !! Hi all, There has been a lot of interest from various groups to develop/explore medical applications around the XO laptop. While a number of people/groups have already undertaken efforts in a number of areas, there are also many more people interested in volunteering and helping out. While people have put in great efforts into many projects, our efforts would be much more effective once we get a little organized amongst ourselves so that we can co-ordinate on our projects, avoid duplication of efforts, and discuss with people with field experience to comment and feedback on our efforts. The reach of our efforts and projects is promising and the potential to impact kids and communities around the world is huge -- all this is possible due to the scale and reach of XO deployments. One can broadly break down efforts into the following three areas - (1) Content Creating a Library/repository of information that would be shipped on the XO laptop as part of the default software on it. This would be a ready reference for preliminary diagnosis of diseases and a reference for symptoms. This would also include general information on an array of topics such as hygiene, nutrition, balanced diets, etc. (2) Hardware Developing and using hardware peripherals that connect to the XO laptop. These include, but are not limited to the build-in camera (with the possibility of add-on optical elements; an EKG; and a pulse oxymeter. (3) Software Developing software that asks the user a series of questions and helps in a preliminary diagnosis. Links to useful websites and online portals. David Greisen, Seth Woodworth, Pascal Scheffers, Benjamin Schwartz are some of the people that have been working on Content Ian Daniher, Rafael Ortiz, IMSA OLPC chapter participants (Scott Swanson, Kevin, April Hope) are some of the people working on Hardware Please add onto this list and let everyone know what you've been working upon. David Greisen and Mika Matsuzaki are co-ordinating efforts on the content related projects. Ian Daniher and Kevin(IMSA) are co-ordinating efforts on hardware projects We still need volunteers to co-ordinate efforts on the software projects Apart from that, we need to setup an advisory board comprising of Doctors, field workers, medical professionals etc. to guide the efforts in all three areas. How you can start participating in the OLPC Health efforts -- (1) Send an email to library mailing list[1] with a short introduction of yourself. If you'd like to head/undertake projects, please put up project proposals and let all know that you're looking for participants/volunteers/developers If you'd like to volunteer in projects, please mention your area of experience and/or what areas you'd be interested to volunteer in. (2) Categorize the list of volunteers on the wiki page http://wiki.laptop.org/go/Health and add your name into the appropriate category. Please create other categories if content, hardware, software don't seem to represent the efforts very well. (3) Help the OLPC Health team connect with field workers, MDs , Doctors, Physicians towards the formation of an advisory group (4) There is a conference call that we have on the 10th of February. Please propose agenda items! For people in Boston/Cambridge area -- please help me organize the call/meeting ! That was a long email! Thank you for your patience in reading through it. best, Arjun Sarwal ps - please avoid ccing the devel mailing list further. Let's continue this discussion only on the library mailing list[1]. pps - join library mailing list[1] [1] Library mailing list -
New joyride build 1601
http://xs-dev.laptop.org/~cscott/olpc/streams/joyride/build1601 Changes in build 1601 from build: 1600 Size delta: 0M -olpc-library-core 1-20 +olpc-library-core 1-21 --- Changes for olpc-library-core 1-21 from 1-20 --- + linkfix in bundle archive + howto and bundle-archive cleanup, better categories + selection/index fixes, es translation + rm extra xo-guide, reupload new rpm. -- This mail was automatically generated See http://dev.laptop.org/~rwh/announcer/joyride-pkgs.html for aggregate logs See http://dev.laptop.org/~rwh/announcer/joyride_vs_update1.html for a comparison ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Battery charging and display intensity in joyride-1594
From: Mark Bauer [EMAIL PROTECTED] To: devel@lists.laptop.org Date: Mon, 28 Jan 2008 09:47:08 -0600 Subject: Battery charging and display intensity in joyride-1594 G1G1 program (thanks guys) upgraded to joyride-1594 firmware Q2D10 Plugged in after about 2 hours of use just sitting there on the sugar screen that shows what apps are running. Battery shows not charging (it did when I first plugged it in). Putting mouse over battery symbol, and it is says battery fully charged. But the charge light is still amber, It used to go back to green (or yellow). I'm having the same issue: http://dev.laptop.org/ticket/6227 -p -- Paul Swartz paulswartz at gmail dot com http://z3p.livejournal.com/ AIM: z3penguin ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [OLPC library] 'OLPC-Health' takes off !!- MATLAB for OLPC?
AFAIK Matlab is not open source. You can use octave http://www.gnu.org/software/octave/ or scilab http://www.scilab.org/ to get the job done. Best, Simon drew einhorn wrote: The person to ask about this is Cleve Moler [EMAIL PROTECTED], the original author of MATLAB. On Jan 28, 2008 8:34 AM, Brown, Henry, DoIT [EMAIL PROTECTED] wrote: OLPC + MATLAB - Tricorder for developing world 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 http://laptop.org/ http://www.sciencedaily.com/releases/2008/01/080121100909.htm If the MATLAB software could run on OLPC it could be used to monitor disease in the field. I worked with AIDS patients and child nutrition programs while in the Peace Corps. We saw kids die every week from RSV and dehydration caused by diarrhea. We did not know what antibiotic to give. OLPC could use MATLAB software to integrate DNA array results to diagnosis. An expert system similar to Mycin could then be used to diagnose disease in the field via the web. http://en.wikipedia.org/wiki/Mycin Henry Brown [EMAIL PROTECTED] cell 795-3680 office 505 827-2509 From: [EMAIL PROTECTED] on behalf of Arjun Sarwal Sent: Fri 1/25/2008 4:23 PM To: [EMAIL PROTECTED]; devel@lists.laptop.org Subject: 'OLPC-Health' takes off !! Hi all, There has been a lot of interest from various groups to develop/explore medical applications around the XO laptop. While a number of people/groups have already undertaken efforts in a number of areas, there are also many more people interested in volunteering and helping out. While people have put in great efforts into many projects, our efforts would be much more effective once we get a little organized amongst ourselves so that we can co-ordinate on our projects, avoid duplication of efforts, and discuss with people with field experience to comment and feedback on our efforts. The reach of our efforts and projects is promising and the potential to impact kids and communities around the world is huge -- all this is possible due to the scale and reach of XO deployments. One can broadly break down efforts into the following three areas - (1) Content Creating a Library/repository of information that would be shipped on the XO laptop as part of the default software on it. This would be a ready reference for preliminary diagnosis of diseases and a reference for symptoms. This would also include general information on an array of topics such as hygiene, nutrition, balanced diets, etc. (2) Hardware Developing and using hardware peripherals that connect to the XO laptop. These include, but are not limited to the build-in camera (with the possibility of add-on optical elements; an EKG; and a pulse oxymeter. (3) Software Developing software that asks the user a series of questions and helps in a preliminary diagnosis. Links to useful websites and online portals. David Greisen, Seth Woodworth, Pascal Scheffers, Benjamin Schwartz are some of the people that have been working on Content Ian Daniher, Rafael Ortiz, IMSA OLPC chapter participants (Scott Swanson, Kevin, April Hope) are some of the people working on Hardware Please add onto this list and let everyone know what you've been working upon. David Greisen and Mika Matsuzaki are co-ordinating efforts on the content related projects. Ian Daniher and Kevin(IMSA) are co-ordinating efforts on hardware projects We still need volunteers to co-ordinate efforts on the software projects Apart from that, we need to setup an advisory board comprising of Doctors, field workers, medical professionals etc. to guide the efforts in all three areas. How you can start participating in the OLPC Health efforts -- (1) Send an email to library mailing list[1] with a short introduction of yourself. If you'd like to head/undertake projects, please put up project proposals and let all know that you're looking for participants/volunteers/developers If you'd like to volunteer in projects, please mention your area of experience and/or what areas you'd be interested to volunteer in. (2) Categorize the list of volunteers on the wiki page http://wiki.laptop.org/go/Health and add your name into the appropriate category. Please create other categories if content, hardware, software don't seem to represent the efforts very well. (3) Help the OLPC Health team connect with field workers, MDs , Doctors, Physicians towards the formation of an advisory group (4) There is a conference call that we have on the 10th of February. Please propose agenda items! For people in Boston/Cambridge area -- please help me organize the call/meeting ! That was a long email! Thank you for your patience in reading through it. best, Arjun Sarwal ps - please
Update.1 690 poweroffs?
I hate to trac something so vague, but please let me know if this better belongs there: I've been running update.1 build 690 on my G1G1 C2 for about 4 days now, and on 2 of the 3 nights (and one afternoon) since I installed it I've found it powered off. It's been connected to AC all three times, and each time the power button did no good - I had to take out the battery and disconnet the power to start it up. Today the battery light was on (green) but no other lights were on (the other two times no lights were on). I've never seen this behavior before. Anybody else seen this? Martin pgpGqDNUWvyHD.pgp Description: PGP signature ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Update.1 690 poweroffs?
Martin Dengler wrote: and each time the power button did no good - I had to take out the battery and disconnet the power to start it up. Today the battery light was on (green) but no other lights were on (the other two times no lights were on). Next time it happens please plug and unplug the external power and see if your battery status light changes. Also please edit /etc/syslog.conf and uncomment out the line: #kern.* and redirect the data to a file rather than /dev/console please use a nand backed file rather than /var/log which is a ramfs. I normally use /root/kern.log Then restart syslogd. That log file is really chatty so it will grow fast. you will want to watch it and trim it down on a regular basis. When it powers off again please send that to me. -- Richard Smith [EMAIL PROTECTED] One Laptop Per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Animation/Python/PyGames vs battery charge
I have set up some test animation code. Normally games try to take all the cycles they can get. I am trying to preserve as much battery energy as I can. So I am setting a specific frame rate and sleeping beyond what it takes to maintain that frame rate. Do you think this will actually reduce the drain on the XO battery? In other words What does the XO do when apps sleep? ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
EC Problem
Running joyride 1551 and q2d07, I was running a bunch of apps with backlight off, it went to sleep on me, I tried to wake it up and got a BSOD-like message about EC problem. (Had logging turned on as described in 5485, echo 0x6184 /sys/module/libertas/parameters/libertas_debug) I searched trac but couldn't find it, but it is not much help to just trac it crashed, so can anybody point me to what logs I should post if I can manage to reproduce this? ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: EC Problem
There are precious few logs for debugging EC problems, we usually instrument the laptops with logging of their serial ports for debugging EC problems. Several EC bugs have been found and fixed recently, and that reproducing the bug w. q2d07 would have limited utility. Please upgrade to q2d10, and if you see the problem again trac it (w. the exact text of the BSOD-like message). Thanks, wad On Jan 28, 2008, at 4:18 PM, Jameson Chema Quinn wrote: Running joyride 1551 and q2d07, I was running a bunch of apps with backlight off, it went to sleep on me, I tried to wake it up and got a BSOD-like message about EC problem. (Had logging turned on as described in 5485, echo 0x6184 /sys/module/libertas/parameters/ libertas_debug) I searched trac but couldn't find it, but it is not much help to just trac it crashed, so can anybody point me to what logs I should post if I can manage to reproduce this? ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: EC Problem
Jameson Chema Quinn wrote: \ Running joyride 1551 and q2d07, I was running a bunch of apps with backlight off, it went to sleep on me, I tried to wake it up and got a BSOD-like message about EC problem. Yeah. Thats a known problem with all firmware q2d08a. -- Richard Smith [EMAIL PROTECTED] One Laptop Per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Python Development
Hi, The process works fine until I try to create a package and the system cannot find sugar.activity. I cannot find it with find. You should ./sugar-jhbuild shell before using other sugar-jhbuild commands. (Or perform the commands *inside* the sugar-jhbuild run.) The way that python module loading works is that . is used to signify directory hierarchies -- import sugar.activity will look for something like sugar/activity/__init__.py in $PYTHONPATH. 2. Having failed with Sugar-jhbuild, I put qemu on my laptop and went that way. Qemu seems to want to run but generates an error message on trying to open my image: [EMAIL PROTECTED]:~$ qemu -m 256 -hda /home/olpc/XOimg/os650.img qemu: could not open hard disk image '/home/olpc/XOimg/os650.img' This is a jffs2 image, which is a flash filesystem. You should use an ext3 image for qemu. For 650: http://xs-dev.laptop.org/~cscott/olpc/streams/ship.2/build650/devel_ext3/olpc-redhat-stream-ship.2-devel_ext3.img.bz2 You might consider instead using an Update.1 build, which is the build that we're hoping to release soon: http://pilgrim.laptop.org/~pilgrim/olpc/streams/update.1/build690/devel_ext3/xo-1-olpc-stream-update.1-devel_ext3.img.bz2 Hope that helps. Further questions are probably best posted to the sugar@ list instead of [EMAIL PROTECTED] - Chris. -- Chris Ball [EMAIL PROTECTED] ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [OLPC library] 'OLPC-Health' takes off !!- MATLAB for OLPC?
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 http://laptop.org/ http://www.sciencedaily.com/releases/2008/01/080121100909.htm If the MATLAB software could run on OLPC it could be used to monitor disease in the field. I worked with AIDS patients and child nutrition programs while in the Peace Corps. We saw kids die every week from RSV and dehydration caused by diarrhea. We did not know what antibiotic to give. OLPC could use MATLAB software to integrate DNA array results to diagnosis. An expert system similar to Mycin could then be used to diagnose disease in the field via the web. http://en.wikipedia.org/wiki/Mycin Creating new software to read and analyze DNA microarrays is not hard. MATLAB is not required. If you can make the case for microarray analysis, appropriate software can be created easily enough. However, reading a microarray typically requires a high-resolution digital fluorescence microscope, which is very expensive. Therefore, any clinic that can make use of this technology is likely to be able to afford more appropriate dedicated computing hardware than the XO. --Ben Schwartz ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Python Development
Hi, On Mon, 2008-01-28 at 16:25 -0500, 7150 wrote: I am sorry to bother you on this list, but answers seem not to becoming from elsewhere. You are welcome, questions like this are more than appropriate, but is better to have them in the sugar mailing list: http://lists.laptop.org/listinfo/sugar Also, feel free to drop by #sugar if you want more direct contact: http://wiki.laptop.org/go/IRC#irc.freenode.net_channels 1. I built a Fedora 7 Python development machine. Sugar-jhbuild runs just fine on it. I started the tutorial at: http://www.ibm.com/developerworks/edu/l-dw-linux-xo-python-i.html The process works fine until I try to create a package and the system cannot find sugar.activity. I cannot find it with find. What do you mean by create a package? Can you paste the exact commands? Sugar-jhbuild is located in a subdirectory of /home/olpc/. I am running as the olpc user. Jhbuild can be hard to set up by the first time, but once it works uses to last for at least one release ;) Being in F7 you should not have many problems. Good luck, Tomeu ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Animation/Python/PyGames vs battery charge
Noah Kantrowitz wrote: Kent Loobey wrote: I have set up some test animation code. Normally games try to take all the cycles they can get. I am trying to preserve as much battery energy as I can. So I am setting a specific frame rate and sleeping beyond what it takes to maintain that frame rate. Do you think this will actually reduce the drain on the XO battery? In other words What does the XO do when apps sleep? If SDL is actually using a real timed sleep, it would help, but I don't think it does. This is often too inaccurate for games, so we may need to look at that ourselves. Because pygame is polling driven (instead of using async callbacks like GTK) it is unlikely that it will ever get as nice a battery life as GTK-based activities. There are two types of sleep in Pygame, one is: pygame.time.wait( milliseconds ) which does a process sleep. The other is: pygame.time.delay( milliseconds ) which does a busy-loop to provide accurate time-keeping. OLPCGames also now has a function which combines wait with a time-based sleep state where the program is completely suspended if there are no events for a given period. The same is true of Pippy's (independent) wrapper. That said, lots of games, particularly ones which are simulation based, may need to run all the time. The XO is also *not* currently (AFAIK) doing aggressive suspend. That is, while we would like to get to the point where the machine can suspend and resume in 10ms range, it currently takes too long to shut down between frames of a game. That is, while eventually micro-sleep may show up, AFAIK we don't yet have support for it on the laptop, so the processor is likely running at 100% power (even if in a busy loop in the kernel) (AFAIK there is no frequency scaling available in the processor). We might get some minimal benefit from having less load, but if we're waking up 10 or 15 times a second we're not going to see the kind of power benefits we'd see with multi-second or multi-minute suspending. We still want to have the games waiting when they are not needed. Eventually we hope to get aggressive suspend such that between frames we can go to sleep, but until then the power benefits are in allowing other processes to run, and in shutting down the game entirely after a period of inactivity. HTH, Mike -- Mike C. Fletcher Designer, VR Plumber, Coder http://www.vrplumber.com http://blog.vrplumber.com ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Update.1 690 poweroffs?
Thanks for your info, Martin. Are you on Trac? Can you write up a bug for follow up? (Or if someone knows of a trac item that Martin can use to add his notes; that would be great). Thanks, Kim 2008/1/28 Martin Dengler [EMAIL PROTECTED]: I hate to trac something so vague, but please let me know if this better belongs there: I've been running update.1 build 690 on my G1G1 C2 for about 4 days now, and on 2 of the 3 nights (and one afternoon) since I installed it I've found it powered off. It's been connected to AC all three times, and each time the power button did no good - I had to take out the battery and disconnet the power to start it up. Today the battery light was on (green) but no other lights were on (the other two times no lights were on). I've never seen this behavior before. Anybody else seen this? Martin ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [OLPC library] MATLAB for OLPC?
On Jan 28, 2008, at 8:04 PM, Cleve Moler wrote: (I doubt that MATLAB runs in the OLPC, but I'm not sure.) According to the system requirements[0] for MATLAB 7.5, it won't run on the XO laptop due to insufficient RAM (256MB present, 512MB required). In a perfect world, that would mean you'd pick an older version that runs on our hardware and consider open sourcing it, like EA did with the tremendously popular SimCity[1]. The latter made gamers around the world rejoice -- perhaps MathWorks could do the same for us math-heads; getting some real numerical analysis tools into the kids' hands would be awfully exciting. Cheers, Ivan. [0] http://www.mathworks.com/support/sysreq/current_release/linux.html [1] http://arstechnica.com/news.ars/post/20071110-original-sim-city-donated-to-one-laptop-per-child-project.html -- Ivan Krstić [EMAIL PROTECTED] | http://radian.org ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
RE: [OLPC library] 'OLPC-Health' takes off !!- MATLAB for OLPC?
I am passing this on to Bob Bemis, who wrote the microarray demo on MATLAB Central. (I doubt that MATLAB runs in the OLPC, but I'm not sure.) -- Cleve -Original Message- From: drew einhorn [mailto:[EMAIL PROTECTED] Sent: Monday, January 28, 2008 11:22 AM To: Brown, Henry, DoIT Cc: Arjun Sarwal; [EMAIL PROTECTED]; devel@lists.laptop.org; Eul-Shik Hong; [EMAIL PROTECTED]; [EMAIL PROTECTED]; Cleve Moler Subject: Re: [OLPC library] 'OLPC-Health' takes off !!- MATLAB for OLPC? The person to ask about this is Cleve Moler [EMAIL PROTECTED], the original author of MATLAB. On Jan 28, 2008 8:34 AM, Brown, Henry, DoIT [EMAIL PROTECTED] wrote: OLPC + MATLAB - Tricorder for developing world 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 http://laptop.org/ http://www.sciencedaily.com/releases/2008/01/080121100909.htm If the MATLAB software could run on OLPC it could be used to monitor disease in the field. I worked with AIDS patients and child nutrition programs while in the Peace Corps. We saw kids die every week from RSV and dehydration caused by diarrhea. We did not know what antibiotic to give. OLPC could use MATLAB software to integrate DNA array results to diagnosis. An expert system similar to Mycin could then be used to diagnose disease in the field via the web. http://en.wikipedia.org/wiki/Mycin Henry Brown [EMAIL PROTECTED] cell 795-3680 office 505 827-2509 From: [EMAIL PROTECTED] on behalf of Arjun Sarwal Sent: Fri 1/25/2008 4:23 PM To: [EMAIL PROTECTED]; devel@lists.laptop.org Subject: 'OLPC-Health' takes off !! Hi all, There has been a lot of interest from various groups to develop/explore medical applications around the XO laptop. While a number of people/groups have already undertaken efforts in a number of areas, there are also many more people interested in volunteering and helping out. While people have put in great efforts into many projects, our efforts would be much more effective once we get a little organized amongst ourselves so that we can co-ordinate on our projects, avoid duplication of efforts, and discuss with people with field experience to comment and feedback on our efforts. The reach of our efforts and projects is promising and the potential to impact kids and communities around the world is huge -- all this is possible due to the scale and reach of XO deployments. One can broadly break down efforts into the following three areas - (1) Content Creating a Library/repository of information that would be shipped on the XO laptop as part of the default software on it. This would be a ready reference for preliminary diagnosis of diseases and a reference for symptoms. This would also include general information on an array of topics such as hygiene, nutrition, balanced diets, etc. (2) Hardware Developing and using hardware peripherals that connect to the XO laptop. These include, but are not limited to the build-in camera (with the possibility of add-on optical elements; an EKG; and a pulse oxymeter. (3) Software Developing software that asks the user a series of questions and helps in a preliminary diagnosis. Links to useful websites and online portals. David Greisen, Seth Woodworth, Pascal Scheffers, Benjamin Schwartz are some of the people that have been working on Content Ian Daniher, Rafael Ortiz, IMSA OLPC chapter participants (Scott Swanson, Kevin, April Hope) are some of the people working on Hardware Please add onto this list and let everyone know what you've been working upon. David Greisen and Mika Matsuzaki are co-ordinating efforts on the content related projects. Ian Daniher and Kevin(IMSA) are co-ordinating efforts on hardware projects We still need volunteers to co-ordinate efforts on the software projects Apart from that, we need to setup an advisory board comprising of Doctors, field workers, medical professionals etc. to guide the efforts in all three areas. How you can start participating in the OLPC Health efforts -- (1) Send an email to library mailing list[1] with a short introduction of yourself. If you'd like to head/undertake projects, please put up project proposals and let all know that you're looking for participants/volunteers/developers If you'd like to volunteer in projects, please mention your area of experience and/or what areas you'd be interested to volunteer in. (2) Categorize the list of volunteers on the wiki page http://wiki.laptop.org/go/Health and add your name into the appropriate category. Please create other categories if content, hardware, software don't seem to represent the efforts very well. (3) Help the OLPC Health team connect with field workers, MDs , Doctors, Physicians towards the formation of an advisory group
Re: [OLPC library] MATLAB for OLPC?
On Jan 28, 2008 5:24 PM, Ivan Krstić [EMAIL PROTECTED] wrote: On Jan 28, 2008, at 8:04 PM, Cleve Moler wrote: (I doubt that MATLAB runs in the OLPC, but I'm not sure.) There are a number of open-source replacements for MATLAB, including GNU Octave ( http://www.gnu.org/software/octave/ ) and Maxima ( http://maxima.sourceforge.net/ ). --scott -- ( http://cscott.net/ ) ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [OLPC library] MATLAB for OLPC?
On Mon, 28 Jan 2008, Marcus Leech wrote: I was just about to say the same thing. There's also R (The open-source replacement for 'S'). I know someone who would be more than happy to help bring R and OLPC together. /me looks meaningfully at Mr. Michael Tiemann... --g -- Greg DeKoenigsberg Community Development Manager Red Hat, Inc. :: 1-919-754-4255 To whomsoever much hath been given... ...from him much shall be asked ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [OLPC library] MATLAB for OLPC?
C. Scott Ananian wrote: On Jan 28, 2008 5:24 PM, Ivan Krstić [EMAIL PROTECTED] wrote: On Jan 28, 2008, at 8:04 PM, Cleve Moler wrote: (I doubt that MATLAB runs in the OLPC, but I'm not sure.) There are a number of open-source replacements for MATLAB, including GNU Octave ( http://www.gnu.org/software/octave/ ) and Maxima ( http://maxima.sourceforge.net/ ). --scott I was just about to say the same thing. There's also R (The open-source replacement for 'S'). When my daughter was taking introductory algebra, I showed here the algebraic solver in xMaxima. She said that's cheating :-) ex ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: non-Sugar but core software?
Holger Levsen wrote: for Debian I've started http://wiki.debian.org/DebianEdu/OLPC/ToDo yesterday, to document what is working and whats not and what work needs to be done. In general, a document describing how the XO-1-fedora installation differs from a plain fedora would be very much appreciated, also by the OpenWRT developers. A quick (although low-level) way to find out, is going through the Fedora pkgdb to find the complete list of packages we've forked in the OLPC-2 collection: https://admin.fedoraproject.org/pkgdb/collections/ For each one of these, you can checkout the cvs source: cvs -d :pserver:[EMAIL PROTECTED]/cvs/pkgs co PACKAGE Then you can diff between the version in F-7 and the one in OLPC-2. Many changes are not OLPC specific and will hopefully be merged back with our upstreams as soon as the relevant maintainers find the time to clean them up. I've been doing some of this work for my packages, but I'm afraid there's a lot more to be done, especially in Xorg. Feel free to beat me! This list does not include a small number of packages that need to be moved to koji and have not made it yet for various reasons. You can find all these by grepping for olpc-joyride in our build logs: http://xs-dev.laptop.org/cscott/olpc/streams/joyride/latest/devel_jffs2/build.log Finally, while I have no time to do much of this work myself, I'm glad to help integrate our customizations into Debian, OpenWRT, or any other distro willing to support the XO. -- \___/ |___| Bernardo Innocenti - http://www.codewiz.org/ \___\ One Laptop Per Child - http://www.laptop.org/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [OLPC library] MATLAB for OLPC?
2008/1/28 C. Scott Ananian [EMAIL PROTECTED]: On Jan 28, 2008 5:24 PM, Ivan Krstić [EMAIL PROTECTED] wrote: On Jan 28, 2008, at 8:04 PM, Cleve Moler wrote: (I doubt that MATLAB runs in the OLPC, but I'm not sure.) There are a number of open-source replacements for MATLAB, including GNU Octave ( http://www.gnu.org/software/octave/ ) and Maxima ( http://maxima.sourceforge.net/ ). --scott -- Another interesting open source math project also pointed as a replacement of matlab is Sage * http://www.sagemath.org/** * -- Rafael Enrique Ortiz Guerrero One Laptop Per Child [EMAIL PROTECTED] ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [OLPC library] MATLAB for OLPC?
Rafael Enrique Ortiz Guerrero wrote: 2008/1/28 C. Scott Ananian [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]: On Jan 28, 2008 5:24 PM, Ivan Krstić [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: On Jan 28, 2008, at 8:04 PM, Cleve Moler wrote: (I doubt that MATLAB runs in the OLPC, but I'm not sure.) There are a number of open-source replacements for MATLAB, including GNU Octave ( http://www.gnu.org/software/octave/ ) and Maxima ( http://maxima.sourceforge.net/ ). --scott -- Another interesting open source math project also pointed as a replacement of matlab is Sage * http://www.sagemath.org/** * My turn: 1. Both Maxima/XMaxima/wxMaxima and R run on my XO out of the box courtesy of yum. With the Maximae, you get your choice of Lisp run times. I've successfully used both the clisp and SBCL runtimes. They do have a lot of dependencies, however, so watch your flash space. 2. Maxima is a Computer Algebra System and R is a graphical and statistical/numeric package. Both will do number crunching, but they're two different beasts, and both fundamentally different beasts from Matlab. 3. There are two and a half free Matlab clones. Someone mentioned Octave, but there is also Freemat, and a half-free package called SciLab. I call SciLab half-free because I don't know its exact license. You can download it freely, but I'm not sure all of the GPL freedoms are in place on it. I have used exactly none of these -- I learned R and don't see the need for another number cruncher. 4. On to Sage -- Sage is a wonderful package. It is written in Python and wraps many specialized and more general math packages. Its goal is to replace Mathematica, Maple, and some other less-well-known math packages. However -- it's huge. And it installs everything independently of whether you have the same package already as part of your distro. I loaded it once, but there were only two or three rather specialized packages in Sage that weren't in my Gentoo repositories already. I think it's modular -- you don't have to load the whole enchilada. I might load the base on my virtual XO just to see how much space the core takes, because it's really an excellent collection. If you can only load *one* math package, I highly recommend wxMaxima with the clisp run time. That's going to give you the most bang for your flash space. You don't really need XMaxima -- wxMaxima is a much better UI. By the way, wxMaxima also runs on Windows!! Well ... so does R. In fact, the Windows UI for R is better than the core Linux UI. :) ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [OLPC library] OLPC+MATLAB+Greene DNA Chip = Disease Tricorder for developing world
M. Edward (Ed) Borasky wrote: R has several server options, although I've never used them. http://www.rforge.net/Rserve/ http://cran.r-project.org/src/contrib/Descriptions/R.rsp.html and if you absolutely positively *must* use Windows, http://cran.r-project.org/contrib/extra/dcom/RSrv135.html ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: tcp/ip assumptions
I'm confused as to what you mean by a relay system. If you mean it's a router, then it should route the NTP packets fine. If you mean it's an HTTP proxy, then NTP simply doesn't work over an HTTP proxy. I don't understand why you expect the XO to magically figure out how you want your network to work. NTP is routed over TCP/IP. If you want it to work, you have to provide TCP/IP routing to the server! If you don't want to, you can run an NTP server on your relay system. There's nothing wrong with the XO making assumptions as to the external services available, as the school servers will have NTP servers, and if the laptop is on the mesh network, it will have access to the server. If I've made an incorrect assumption here, or made a mistake, please let me know. Thanks, Thomas Tuttle On Mon, 28 Jan 2008 20:56:46 -0500, Mikus Grinbergs [EMAIL PROTECTED] said: I have a G1G1, which communicates via a local LAN to a relay system, which communicates to the internet. The server facilities (*just* for the XO - not needed by the regular systems on my LAN) I've now set up in the relay station are minimal (e.g., for DNS). The result is that many XO requests are not fulfilled by my relay system (for instance, a separate dialog may be needed - between the relay system and a *real* server out on the internet). I was looking at a trace of the packets on my local LAN. In the case of DNS, the XO issues three Type 28 requests (which my minimal relay station does not support), before issuing a Type 01, to which it eventually does get an answer. In the case of NTP, the XO issues scattershot requests to all server addresses it was able to extract [but receives no responses, because it tries to contact them directly, rather than going through the 'proxy' function in my relay system]. My conclusion: The tcp/ip function in the XO makes a number of assumptions as to the type (and timeliness) of the external SERVICES it expects to have been provided. I would have been happier if I had known about these beforehand, rather than having to discover what does or does_not work in the environment I currently have. [Might some setups in a target country be as minimal as mine?] mikus ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: tcp/ip assumptions
G'day Mikus, I agree with Thomas ... if your relay system is not providing transparent proxy for TCP/IP then there are certainly some things in the XO software that will not work. Perhaps your relay does not support the XO. I have looked at the DNS requests made by the XO and they are correct. If your relay does not support them, it may be time to fix it. The XO software certainly makes assumptions, but these are so trivially provided by a school server and internet connection that I don't see these assumptions as a problem. -- James Cameron ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
New joyride build 1604
http://xs-dev.laptop.org/~cscott/olpc/streams/joyride/build1604 Changes in build 1604 from build: 1601 Size delta: 1M -etoys 2.3.1870-1 +etoys 2.3.1882-1 -Etoys 74 +Etoys 75 -Measure 15 +Measure 16 --- Changes for etoys 2.3.1882-1 from 2.3.1870-1 --- + updated translations from pootle + added bn, pt_BR, sv translations + fixed unplayable movie in example project + (re-)disable key generation on startup + fix resuming a midi file + ability to create .xo bundle + support localization in bundles --- Changes for Etoys 75 from 74 --- + remove audio/mpeg and video/mpeg mimetypes + add application/x-squeak-archive mimetype --- Changes for Measure 16 from 15 --- + Included translations added via pootle - pl, te, mn, ff, ff_AF, -- This mail was automatically generated See http://dev.laptop.org/~rwh/announcer/joyride-pkgs.html for aggregate logs See http://dev.laptop.org/~rwh/announcer/joyride_vs_update1.html for a comparison ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
huge init footprint
Hello, I just noticed that our init uses up an unusual amount of memory (5MB!), almost as if it was a Python process. And in fact, it seems to be really a python process spawned by our initrd. And since the initrd cannot possibly use the system libraries from the jffs2 partition, almost all these mappings are unshared. Now, to conserve resources, it would be nice if we could exec() the real init just before passing control to the rc scripts. -- \___/ |___| Bernardo Innocenti - http://www.codewiz.org/ \___\ One Laptop Per Child - http://www.laptop.org/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Battery charging and display intensity in joyride-1594
Mark Bauer wrote: Second issue.. Not touching the system, the display intensity keeps jumping up and down. This is ohm suspending the laptop after 20 seconds of inactivity, and network traffic waking it up shortly after. I guess we could fix it by not undimming the display if we wake up just because of network activity? I am still on AC, no need to dim the display, it is just a bit annoying. There's no (easy) way to tell whether your AC has an infinite amount of cheap energy or of your grandpa is cranking to keep the laptop going. I also find it annoying, and I guess we could make the idle timeout tunable somehow. For now, you can tune it by killing ohm. -- \___/ |___| Bernardo Innocenti - http://www.codewiz.org/ \___\ One Laptop Per Child - http://www.laptop.org/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Speak activity and speech synthesisor
Speak uses the speech synthesizer espeak which includes support for adding languages. Here is a place to start: http://espeak.sourceforge.net/add_language.html You may want to contact the espeak developers directly. Their contact info is at the top of this page: http://espeak.sourceforge.net/ -josh On Jan 28, 2008, at 9:36 PM, David Leeming wrote: I am interested in how to localise the XO for our Pacific Islands region in terms of the Speak activity and speech synthesis generally. Most languages here are phonetic with each letter being pronounced, so it should be simple. Any pointers to how to do this would appreciated. David Leeming Technical Advisor, People First Network Honiara, Solomon Islands, South Pacific ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Speak activity and speech synthesisor
I am interested in how to localise the XO for our Pacific Islands region in terms of the Speak activity and speech synthesis generally. Most languages here are phonetic with each letter being pronounced, so it should be simple. Any pointers to how to do this would appreciated. David Leeming Technical Advisor, People First Network Honiara, Solomon Islands, South Pacific ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: huge init footprint
On 29/01/2008, at 4:20 PM, Bernardo Innocenti wrote: I just noticed that our init uses up an unusual amount of memory (5MB!), almost as if it was a Python process. I'm at a conference where anyone with an XO gets urgently questioned about their version management, so I've not got one with me right now ... what does lsof(1) say this init process has open, and what does /proc/1/stat* say about the memory cost? I do recall there was a really good reason why our init is in Python ... activation and so forth. Does it deserve recoding just to save 5Mb? -- James Cameron ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: tcp/ip assumptions
Thomas Tuttle wrote: I don't understand why you expect the XO to magically figure out how you want your network to work. What I want to know (i.e., to figure out) is how __I__ can make the XO work well in my network. For instance, are there environmental variables I can use that will help my setup? [I do NOT expect the __XO__ to magically figure out things.] But it looks to me that the way to find out about what is lacking in my network has been try it and see. I *wish* that topics such as 'proxies' had been better described when the XO was released (G1G1) for anyone's use. NTP simply doesn't work over an HTTP proxy I may be mistaken, but I believe I've read Linux descriptions of NTP which allowed the server URL to be prepended with a proxy-URL. I do not know whether something like that is supported by fedora (or XO). If you want it to work, you have to provide TCP/IP routing to the server! The reason I called it a relay system is because it intermediates between my local LAN and the internet. This system already provides several 'servers' for my local LAN, plus several kinds of 'proxies'. But I also had to define things in the XO, such as RSYNC_PROXY (that allows 'olpc-update' over my network by my XO). An example of a current problem I have is that I have not figured out how to provide off-LAN TCP/IP routing to the sugar-control-panel specified server from the XO's 'jabber' support. There's nothing wrong with the XO making assumptions as to the external services available, as the school servers will have NTP servers But were the G1G1 recipients told the XO assumes there will be an NTP server? And were they told how the XO would behave if that was not true? [Note that even school servers may be temporarily down.] Thanks, mikus ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: New joyride build 1591
Build Announcer v2 wrote: http://xs-dev.laptop.org/~cscott/olpc/streams/joyride/build1591 Changes in build 1591 from build: 1590 Size delta: 1M Could we keep the decimals for this figure? Maybe I'm too being picky :-) -sugar-evince-python 2.20.1.1-1.olpc2 +sugar-evince-python 2.20.1.1-2.olpc2 -bootfw q2d09-3.olpc2.unsigned +bootfw q2d10-1.olpc2.unsigned +desktop-file-utils 0.12-4.fc7 +djvulibre 3.5.18-2.olpc2 -sugar-evince 2.20.1.1-1.olpc2 +sugar-evince 2.20.1.1-2.olpc2 +xdg-utils 1.0.2-3.fc7 What's dragging in djvulibre, desktop-file-utils and xdg-utils? -- \___/ |___| Bernardo Innocenti - http://www.codewiz.org/ \___\ One Laptop Per Child - http://www.laptop.org/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: tcp/ip assumptions
I may be mistaken, but I believe I've read Linux descriptions of NTP which allowed the server URL to be prepended with a proxy-URL. I do not know whether something like that is supported by fedora (or XO). NTP doesn't use URLs so one of us is really confused. (I'm assuming you are talking about Network Time Protocol.) The reason I called it a relay system is because it intermediates between my local LAN and the internet. This system already provides several 'servers' for my local LAN, plus several kinds of 'proxies'. I'm familiar with 2 types of typical setups. One uses a router. The other uses a NAT box. The router just forwards packets. The pure router doesn't look inside the packets. Some routers have firewalls added to try to prevent malicious activities. Some of them look inside the packets and keep track of what's going on. It's often easier to do that sort of work with a proxy. A NAT box is similar to a router but it patches the IP Addresses of packets that it forwards. The initial motivation was to allow several systems in the inside to share a single outside facing IP Address. This is typical of DSL and cable boxes that are often called routers. NAT works OK as long as you don't send your IP address or port numbers inside the packets. (or include it in any crypto hashing or...) NAT gives you some of a firewall for free since unsolicitedincoming packets don't get forwarded. Solicited includes two cases. One is packets that are part of an existing conversation (replies to an outgoing packet). The other is packets to a server where you have setup a table entry telling the NAT box where to send packets for that port number. (aka the server is) A proxy is a box that listens on one side and processes packets at the application (web/HTTP) level and replays the requests out another side. Sometimes those sides are two different ethernet interfaces. Proxys are often used in corporate environments because they can do logging and web filtering... For NTP, the usual solution is to run an NTP server on the inside network and then setup your systems to talk to it rather than someplace outside. You might run it on the proxy but larger organizations probably have a dedicated machine. ntpd on my XO works just fine through a NAT box. -- These are my opinions, not necessarily my employer's. I hate spam. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
