Re: html5 codecs on 1.75

2012-02-02 Thread Benjamin M. Schwartz
On 02/02/2012 05:10 PM, Peter Robinson wrote: On Thu, Feb 2, 2012 at 8:05 PM, Sameer Verma sve...@sfsu.edu wrote: Is this something missing on the Firefox end? No, html5 video support was added in Firefox 4. I think you'll find it has firefox 3.6.x This is not true. Firefox has supported

Re: optimal font rendering settings for XO display

2012-01-25 Thread Benjamin M. Schwartz
On 01/25/2012 07:59 PM, Sridhar Dhanapalan wrote: What are the optimal font rendering settings for the XO's display? Not sure about optimal, but on a clean build the defaults are: Fonts are Sans and Sans bold 201 dpi Smoothing = Grayscale Hinting = Slight I suspect these defaults are also the

Re: OLPC Policies Question Concerning Upgrading Default Installed Software

2012-01-11 Thread Benjamin M. Schwartz
On 01/11/2012 05:21 PM, anth...@evolutionindesignz.com wrote: it is presumed that replacing XULRunner 1.9.1.9 should not cause problems in browser functionaltiy. That's an extremely dangerous thing to presume. I presume that you're actually going to test the browser extensively after

Re: XO-3 Announcement?

2012-01-10 Thread Benjamin M. Schwartz
On 01/10/2012 06:28 PM, Richard A. Smith wrote: In case you missed my previous comment on 1.75 on devel@ the maximum runtime power draw of the 1.75 is 5W. (Not including the extra 5W you can draw from the USB port.) ... One difference between the XO-1.75 and XO-3 is that the XO-3 can _also_

Re: Marvell 88W8388 and 802.11s

2011-09-13 Thread Benjamin M. Schwartz
On 09/12/2011 06:01 PM, Spencer Johnson wrote: How can one implement 802.11s into a wireless adapter? In software (firmware) on the CPU. http://wiki.laptop.org/go/88W8388#CPU --Ben signature.asc Description: OpenPGP digital signature ___ Devel

Re: Sugar and GTK updates

2011-08-16 Thread Benjamin M. Schwartz
On 08/16/2011 11:49 AM, Kevin Gordon wrote: My concern is that feature creep, and with concurrent support dependency increases, it could make the footprint and hardware requirements so large on an XO-1, that it becomes untenable. Has there been discussion as to when the development cycle

Re: [Server-devel] [Sugar-devel] copy files to/from server

2011-05-17 Thread Benjamin M. Schwartz
On 05/17/2011 03:42 AM, Sridhar Dhanapalan wrote: How can XOs copy files to/from their Journal with a server? The simplest solution is probably HTTP. Set up a little local website with an upload/download form. Moodle, or even a generic CMS like Drupal or Wordpress, would work, but the very

Re: WebM format for Record

2011-04-09 Thread Benjamin M. Schwartz
On 04/09/2011 02:00 PM, Daniel Drake wrote: Ben, what are your thoughts on Theora vs WebM for Record? You mentioned at one point that Theora developers were considering focusing on the low-power arena (being displaced by WebM on the high-power high-res front), is that direction being taken?

Re: Record activity performance

2010-12-23 Thread Benjamin M. Schwartz
Just so everyone knows, there have recently been major speedups in the Theora encoder (libtheora), which is a bottleneck for Record performance. These speedups are available in version 1.2-alpha1, which (despite the name) is the recommended version for all but the most conservative applications.

Re: [Sugar-devel] customizing olpc-os-builder image

2010-11-02 Thread Benjamin M. Schwartz
On 11/02/2010 05:13 AM, javed khan wrote: can anybody tell me how to accomplish the following using olpc-os-builder 1: install new fonts 2: change the keyboard layout and default language 3: change the boot animation sugar-devel@ is not really the right mailing list for this question. You

Re: Edit/audit wikipedia activity

2010-10-21 Thread Benjamin M. Schwartz
On 10/21/2010 12:06 PM, Martin Langhoff wrote: Unfortunately, there is a clear need to organise a facility to audit/edit the wikipedia snapshots we have and repack the archive. Do we have any easy way to do this? I'm the wrong person to answer this question, but the activity's archive

Re: SD/MMC cards, a year later

2010-08-18 Thread Benjamin M. Schwartz
On 08/18/2010 11:24 PM, John Watlington wrote: Nonetheless, we are going to try testing it with UbiFS and considering whether any durability improvement justify the increased price (now up to 2x) and built-in obsolescence of using raw NAND chips. If it hits 2x in price, I guess you might be

Re: XO 1.75 screen

2010-08-03 Thread Benjamin M. Schwartz
On 08/02/2010 08:54 AM, Bert Freudenberg wrote: Please, if at all possible, stay with a 4:3 ratio. It's easy to scale content, but to redesign it for 16:9 is hard even for professionals (*). For wide screens we'll probably want to follow Ubuntu Unity and put our menu bar on the short edge.

Re: Activity packaging

2010-07-06 Thread Benjamin M. Schwartz
On 07/06/2010 11:51 AM, Bernie Innocenti wrote: Ok, I think the requirements for activity bundles could be: 1) Support multiple CPU architectures 2) Support multiple distros (and different versions of same distro) 3) Centralized build cluster (submit one source package, get multiple

Re: #10045 HIGH 1.5-sof: XO-1.5 Record audio/video are out of sync with each other

2010-05-13 Thread Benjamin M. Schwartz
On 05/13/2010 03:26 AM, James Cameron wrote: We discussed this briefly in team meeting this morning ... Record is writing an uncompressed stream to SD, before then compressing it in the Save step once the video recording is stopped. (I could be wrong). This means that no matter what the

Net died

2010-05-02 Thread Benjamin M. Schwartz
I have a XO-1.5 (C2 I think). I logged out of my ssh account, closed it up, took it to the airport, turned it on, and it wouldn't find a wifi network. Linux didn't see a network interface, or even try to load libertas. OFW's wlan test fails because it doesn't find the card. Maybe the

Re: The All-Singing, All-Dancing XCompMGR

2010-04-29 Thread Benjamin M. Schwartz
On Thu, 29 Apr 2010, Chris Ball wrote: It also increased the speed of switching between windows. Agreed, and this seems like the strongest reason in favor of shipping it Before you do, please verify that there hasn't been a regression in functionality. 1. Visibility X Compositing makes

Re: New keyboard layouts

2010-04-28 Thread Benjamin M. Schwartz
On Wed, 28 Apr 2010, Walter Bender wrote: On Wed, Apr 28, 2010 at 12:24 PM, Tiago Marques tiago...@gmail.com wrote: I was just looking at the layout again and just noticed the new arrow keys placement. We debated this one. A shorter shift key would be difficult to type on. We opted to

Re: New keyboard layouts

2010-04-28 Thread Benjamin M. Schwartz
On Wed, 28 Apr 2010, Paul Fox wrote: part of the impetus for this keyboard is that it be more normal, for use by older students, perhaps in non-sugar environments. Sure. I'm actually arguing that Ins and Del are no longer normal, and mainstream computers far more popular than the XO often

Re: [Sugar-devel] stopwatch activity

2010-04-27 Thread Benjamin M. Schwartz
On Tue, 27 Apr 2010, Sameer Verma wrote: I noticed something interesting with he stopwatch activity on the XO 1.5 C2 with build 120. When the XO goes into suspend, the clock stops display, but upon resume, will show actual time elapsed (clock keep counting). Mark also works correctly,

Re: Adobe Flash 10.1 + AIR 2.0 on the XO

2010-03-25 Thread Benjamin M. Schwartz
Tiago Marques wrote: I don't think H.264 needs licensed codecs but I'm not sure on that. H.264 is at the top of MPEG-LA's list of codecs that require patent licensing. All the MPEG codecs are on the list, including MP3 and AAC. If you don't want to buy a license, Theora and Vorbis (the Ogg

Re: Adobe Flash 10.1 + AIR 2.0 on the XO

2010-03-25 Thread Benjamin M. Schwartz
John Watlington wrote: EVERY codec need licenses. I know that the FOSS community thinks that Theora is unencumbered, but it has never been tested in court (there hasn't ever been anybody worth suing using it.) Google, Opera, and Mozilla have all funded work on Theora and are distributing

Re: Adobe Flash 10.1 + AIR 2.0 on the XO

2010-03-25 Thread Benjamin M. Schwartz
I hate to reply twice, but John Watlington wrote: it has never been tested in court This is a non sequitur. A codec cannot be proved patent-free in a court. It can only be proved that some particular patent does not apply. If this is your standard, then buying licenses doesn't help, because

Re: [Sugar-devel] RFC: change to XO sleep behavior

2010-03-23 Thread Benjamin M. Schwartz
Paul Fox wrote: now: in the new scheme, the idle sequence has changed: after a fairly brief period of inactivity, the system will suspend, leaving the screen on. (the user may not even know this has happened.) assuming there is still no keyboard activity, a little

Re: New XO-1.5 10.2.0 build 112

2010-03-15 Thread Benjamin M. Schwartz
Mikus Grinbergs wrote: ... there is only one way to make the system reliable, and that is to implement power saving via Cpuidle. My concern is that it might be difficult to tune Cpuidle to distinguish between non-essential processing (which could tolerate suspending) versus background

Re: New XO-1.5 10.2.0 build 112

2010-03-14 Thread Benjamin M. Schwartz
Paul Fox wrote: how exactly do we think this is supposed to work? Not to repeat myself, but there is only one way to make the system reliable, and that is to implement power saving via Cpuidle. Cpuidle is integrated with the process scheduler and kernel timers, so cpu activities (like

Re: surprisingly early suspend

2010-03-08 Thread Benjamin M. Schwartz
John Watlington wrote: I'm under the impression that our desire to stay with a stock operating system is one of the big remaining limitations, but could be wrong. My impression: Linux is capable of the desired behavior in general, via the cpuidle framework, which chooses to transition between

Re: Video Chat, Video Editing and VOIP activities for Sugar

2010-02-12 Thread Benjamin M. Schwartz
Manusheel Gupta wrote: Dear friends, 6 developers working at SEETA http://seeta.in will be spearheading the design and development of video chat, video editing and VOIP activities in Sugar starting Feb. 15. Great! 1. Video Chat - Pidgin (http://www.pidgin.im/) 3. VOIP activity - Shtoom

Re: OLPC hardware: what if there was an SDR modem / chipset?

2010-01-26 Thread Benjamin M. Schwartz
Luke Kenneth Casson Leighton wrote: if i want to write my own peer-to-peer 802.11 algorithms, doing an implementation e.g. of the Babel routing algorithm to run actually on the WIFI chip itself, can i do so, right now, _without_ being forced to sign a Marvell NDA? The 88W8686 in the XO-1.5

Re: Android, OLPC, and native hosting

2009-12-29 Thread Benjamin M. Schwartz
NoiseEHC wrote: What you do not want to recognize is that you are excluding a lot of developers who do not want to waste their time because of the lack of IDEs. We are trying to provide stepping stones. One of those steps is the Develop activity [1], which is a Sugar-oriented IDE for

XO-3 official

2009-12-22 Thread Benjamin M. Schwartz
http://www.forbes.com/2009/12/22/tablet-computer-negroponte-technology-cio-network-olpc.html It aims to make its tablet PC highly durable, all plastic, waterproof, half the thickness of an iPhone and use less than a watt of power, despite an 8-gigaherz processor. The price: an unprecedented $75.

Re: 1.5 - gnome-packagekit?

2009-12-09 Thread Benjamin M. Schwartz
Walter Bender wrote: Slightly off topic, but reading between the lines, it seems there is something more fundamentally broken here. 5000 packages. The Apple app store adds that many new apps every week it seems. Why aren't there 5 million packages available instead of just 5000? Money. The

Re: [Server-devel] [IAEP] Sharing EToys projects

2009-12-06 Thread Benjamin M. Schwartz
Dave Bauer wrote: Do you happen to know what the mime type should be for Etoys to open it? The list of mime types that the eToys activity will open is at http://dev.laptop.org/git/projects/etoys/tree/activity.info.in I'm sure one of the eToys expert can give you better advice than I on which

Re: Wanted: List of Sugar activities for the XO-1.5

2009-12-05 Thread Benjamin M. Schwartz
Samuel Klein wrote: [ADD UNSTAR] VNC Launcher Not sure what this category is for, but I feel like I need to put in a plug for Watch Me [1]. VNC Launcher lets an XO copy its screen to a non-Sugar client with VNC software. Watch Me, wraps this process into a pure Sugar form, so that XOs

Re: Wanted: List of Sugar activities for the XO-1.5

2009-12-05 Thread Benjamin M. Schwartz
I'd suggest Stopwatch http://dev.laptop.org/~bemasc/StopWatchActivity-3.xo --Ben signature.asc Description: OpenPGP digital signature ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

Re: Camera saturation - image compression level

2009-12-03 Thread Benjamin M. Schwartz
Bastien wrote: - shots of the moon are often saturated: how to reduce the gain of the camera? Ideally one would like to do this manually... I never figured out how to control the gain from software. - is there a way to take pictures with a higher resolution? the default compression

Re: Importing images in Write documents makes file huge

2009-11-26 Thread Benjamin M. Schwartz
Philipp Kocher wrote: Is it possible to install an libabiword-olpc rpm of version 2.7.6 or newer? Note that this represents a flag day change. Users with version below and above will not be able to collaborate, at least when trying to share documents containing jpeg images. --Ben

Re: XO-1.5 slow disk writes

2009-11-17 Thread Benjamin M. Schwartz
Daniel Drake wrote: Today I tried to figure out why running sync often takes 5-10 seconds or longer. This slows down suspend, where all data is synced to disk. On the XO-1, it was necessary to sync before suspend, because there was no guarantee that a suspended laptop would reawaken any time

Re: [Sugar-devel] On Sugar 0.84 - status of the Chat/collab leader issue...

2009-11-03 Thread Benjamin M. Schwartz
Martin Langhoff wrote: On Tue, Nov 3, 2009 at 2:41 PM, Gary C Martin g...@garycmartin.com wrote: Other activities that support some form of collaboration like Chat, Browse, Etoys, TurtleArt, Arithmetic, Maze, Pippy, etc, etc, don't care who started the activity first, or who goes away. Are

XO-2 canceled, replaced by XO-1.75 and XO-3.0

2009-11-03 Thread Benjamin M. Schwartz
The ever entertaining Prof. Negroponte surpasses all expectations in his latest performance: http://www.xconomy.com/boston/2009/11/02/negroponte-outlines-the-future-of-olpc-hints-at-paperlike-design-for-third-generation-laptop/ The usual OLPCNews analysis at

Re: [Sugar-devel] Terminal.xo patch: do not die if the cwd is gone

2009-11-03 Thread Benjamin M. Schwartz
Martin Langhoff wrote: use GNU Screen! :-) -- now that would be something: GNU Screen integrated with xterm. Not to toot my own horn, but GNU Screen + OpenSSH + Terminal.xo = ShareTerm : http://lists.sugarlabs.org/archive/sugar-devel/2009-May/014165.html Doesn't help you with persistence,

Re: OOM conditions

2009-10-30 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Richard A. Smith wrote: Working the table at the Boston book festival I was reminded how painful the OOM stuff is on a gen 1. The OOM problem on Gen 1 is a True Kernel Bug. The problem is that the OOM killer just isn't working. Almost all the

Re: Sharing files among several XO

2009-10-28 Thread Benjamin M. Schwartz
Bert Freudenberg wrote: The Distribute activity would be your best bet I guess. Where is it? http://dev.laptop.org/~bemasc/Distribute-1.xo Distribute is the barest prototype of a sharing activity, designed purely as a proof of concept. It is unmaintained, has essentially no user interface, and

Re: [Testing] first play with new XO 1.5 machines

2009-10-22 Thread Benjamin M. Schwartz
Martin Langhoff wrote: I now realize we'd forgotten about Cerebro. If anyone is going to take the hard road, it may be a viable option -- did we ever have a clear plan of what it'd take to integrate it fully (where 'fully' means that things just work at least roughly to where they do on

Re: [Testing] first play with new XO 1.5 machines

2009-10-22 Thread Benjamin M. Schwartz
Martin Langhoff wrote: On Thu, Oct 22, 2009 at 11:51 AM, Daniel Drake d...@laptop.org wrote: 2009/10/22 Tomeu Vizoso to...@sugarlabs.org: What would be more reliable in the under a tree use case: ad-hoc or mesh with a max of 1 hop? Mesh, since everyone does their own beaconing. That's my

Re: tap-to-click feedback

2009-10-22 Thread Benjamin M. Schwartz
Daniel Drake wrote: Really I think the biggest issue is that they press it by accident while typing or making other motions and have no idea why the screen has changed significantly (they don't understand that it's because they clicked, or that their hand was near the pad). Normally,

Re: XO-1.5 follow-on impression

2009-10-16 Thread Benjamin M. Schwartz
Mikus Grinbergs wrote: Was able to use the XO-1.5 (os32) at another location, connected without a proxy. I don't quite understand this statement. Were you connected to the XO-1.5 over the internet, using a technique like X forwarding or VNC? The principal user-perception experience where

Re: [Sugar-devel] erasing the journal and config

2009-08-26 Thread Benjamin M. Schwartz
Sameer Verma wrote: So, here's my request. Can someone whip up an activity that does the following: In my view, this is not appropriate for an Activity. Sugar Activities are not for managing the system. Also, as you noted, if Rainbow is active then this is difficult or impossible, and this

Re: creating seperate dbus-tubes in a single instance of a shared actvity

2009-08-20 Thread Benjamin M. Schwartz
Creating multiple D-Bus tubes may or may not be a good idea in your case. Each D-Bus tube can support many simultaneous parallel transmissions, because D-Bus provides a routed transport. Every D-Bus object has an interface and a path, which allows D-Bus objects to address each other

Faster Multicast [was Re: WatchMe-1, a VNC activity]

2009-08-12 Thread Benjamin M. Schwartz
Martin Langhoff wrote: - can we use multicast frames... and get the APs speeds bumped up to do a fast multicast so as to not use up all the airtime? This would be great... and I just realized that it might also be tremendously beneficial for Telepathy-Salut. Salut uses multicast for two

Re: Disk layout for XO-1.5

2009-08-06 Thread Benjamin M. Schwartz
Martin Langhoff wrote: On Wed, Aug 5, 2009 at 11:52 PM, Albert Cahalanacaha...@gmail.com wrote: BTW, note that the flash disk itself is not certain to be fail-safe in the face of powerloss. Neither the firmware Sure. In practice it seems to be extremely safe, as wedged NAND is one thing we

Re: Disk layout for XO-1.5

2009-08-06 Thread Benjamin M. Schwartz
Martin Langhoff wrote: I would urge... ...you are preaching to the ultra-converted, to the frustrated. I wasn't personally involved, but I know at least Wad Mitch looked quite deep into this, and found no good offers. There is good evidence to trust them in hardware and low level firmware

Re: Disk layout for XO-1.5

2009-08-06 Thread Benjamin M. Schwartz
Richard A. Smith wrote: In the end we chose to use microSDHC cards. For MP, will they be soldered down or on contacts? I like this; I think it creates the potential for all sorts of interesting hackery and upgrades. --Ben signature.asc Description: OpenPGP digital signature

Re: Disk layout for XO-1.5

2009-07-27 Thread Benjamin M. Schwartz
Mitch Bradley wrote: The filesystem is no longer internally compressed. The current size for the XO-1.5 system is 1.1 GB. Interesting. Build 767 had an ext3 version: http://download.laptop.org/xo-1/os/official/767/ext3/xo-1-olpc-stream-8.2-build-767-20081001_1633-devel_ext3-tree.tar.bz2

Re: A1 Motherboard specs diagram

2009-07-20 Thread Benjamin M. Schwartz
NoiseEHC wrote: There are no free 3D drivers. I have heard nothing to indicate that there are likely to be soon. I would be surprised if OLPC were to ship the proprietary drivers, though I cannot speak for them. Then please test the xvideo extension with sleep/resume. I assumed

Re: Availability of XO-1.5 ATest-2 machines

2009-07-20 Thread Benjamin M. Schwartz
Paul Fox wrote: but to be clear, david's right that once the laptop's in this state there's no way to turn off the screen automatically later on -- the system must be re-awakened with user input, and then put to sleep in one of the usual (power switch or lid) ways. this is simply a

Re: Availability of XO-1.5 ATest-2 machines

2009-07-20 Thread Benjamin M. Schwartz
da...@lang.hm wrote: On Mon, 20 Jul 2009, Paul Fox wrote: chris wrote: Hi, my understanding from watching discussions here was that when the system went to sleep it powered down the display, because there was no way to set a timer to wake the system up a little later to

Re: [Techteam] XO-1.5 Kernel Update (i.e My Weekly Status)

2009-07-20 Thread Benjamin M. Schwartz
Richard A. Smith wrote: In any case time based suspend is not where we want to go anyway. We need proper idle detection and some sort of API such that apps which have a workload that idle detection is difficult can specify that they need idle-suspend. I'm repeating myself (I promise I'll

Re: [Techteam] XO-1.5 Kernel Update (i.e My Weekly Status)

2009-07-20 Thread Benjamin M. Schwartz
Paul Fox wrote: benjamin m. schwartz wrote: cpuidle is already used by the kernel to select the ACPI state, but it is possible to add more states as well. Therefore, it seems to me that the logical thing to do is to add the frozen state to cpuidle's menu. perhaps this should

Re: [Techteam] XO-1.5 Kernel Update (i.e My Weekly Status)

2009-07-20 Thread Benjamin M. Schwartz
Richard A. Smith wrote: Benjamin M. Schwartz wrote: To handle unpredictable interrupts, cpuidle uses recent history to predict the frequency of future interrupts, and then chooses processor states to meet an associated latency requirement. It seems likely to me that this will avoid any

Re: [Techteam] XO-1.5 Kernel Update (i.e My Weekly Status)

2009-07-20 Thread Benjamin M. Schwartz
Chris Ball wrote: Hi, perhaps this should be obvious, but can it handle S-states as well? because i believe that's the goal -- freeze the display and then go into S3. Looks like no. Oh? From looking at the code? Do you mean that it can't, or that it doesn't now? We could

Re: [Techteam] XO-1.5 Kernel Update (i.e My Weekly Status)

2009-07-20 Thread Benjamin M. Schwartz
Benjamin M. Schwartz wrote: Audio playback and recording don't use userspace timers, but they do generate a lot of interrupts. If cpuidle does something even marginally sane with interrupt history, it should not go into a high-latency sleep state during sound playback or recording

Re: [Techteam] XO-1.5 Kernel Update (i.e My Weekly Status)

2009-07-20 Thread Benjamin M. Schwartz
John Watlington wrote: We have often discussed the need for an audio DCON. It wouldn't take much -- the amount of memory required for a second of playback/record could be included in the codec. wad My impression is that the codec does DMA to memory for recording and playback. If DMA works

Re: [Techteam] XO-1.5 Kernel Update (i.e My Weekly Status)

2009-07-20 Thread Benjamin M. Schwartz
Paul Fox wrote: perhaps this should be obvious, but can it handle S-states as well? because i believe that's the goal -- freeze the display and then go into S3. I just stumbled across the Design Scenarios for Linux's Power Management Quality of Service system, courtesy of Intel. [1] Notable

Re: A1 Motherboard specs diagram

2009-07-19 Thread Benjamin M. Schwartz
Carlos Nazareno wrote: Does that mean hardware acceleration of audio codec playback? No. From http://en.wikipedia.org/wiki/Audio_codec In hardware, the term audio codec refers to a single device that encodes analog audio as digital signals and vice versa. This is used in sound cards that support

Re: Performance hit while working with screen depth 16

2009-07-13 Thread Benjamin M. Schwartz
shivaprasad javali wrote: My original question still remains unanswered. Is it acceptable for my activity to change the screen depth to increase its performance? Acceptable to whom? It's probably not acceptable to the hundreds of thousands of children who currently have XOs running Sugar,

Re: [Sugar-devel] poor man's mmap sliding window on Python 2.5.x

2009-07-06 Thread Benjamin M. Schwartz
Martin Langhoff wrote: Along the way, found that Python 2.5.x doesn't support an offset to mmap(), which at first blush makes re-mapping with a sliding window problematic. Why is an explicit sliding window necessary? Isn't the point of mmap that you can access as you like, and the kernel will

Re: [Sugar-devel] poor man's mmap sliding window on Python 2.5.x

2009-07-06 Thread Benjamin M. Schwartz
Martin Langhoff wrote: On Tue, Jul 7, 2009 at 2:06 AM, Benjamin M. Schwartzbmsch...@fas.harvard.edu wrote: Is this (a) a kernel bug, (b) Python layering extra caching over mmap, or (c) a misunderstanding of mmap on my part? money is b huh. I looked through python's mmap implementation [1]

Re: The XO-1.5 software plan.

2009-05-16 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chris Ball wrote: We have some good news: OLPC has decided to base its software release for the new XO-1.5 laptop on Fedora 11. Unlike previous releases, we plan to use a full Fedora desktop build, booting into Sugar but giving users the option

Re: Live from SugarCamp

2009-05-15 Thread Benjamin M. Schwartz
Rodrigo Padula de Oliveira wrote: Hello my friends. How can I define groups in Sugar to share things? Can I share an activity only for a specified group of XOs ? Groups are a planned feature, but they have not yet been implemented. What is currently implemented is an invitations system.

Re: [Sugar-devel] Removing the 'Erase' options from activity righ click menu

2009-05-03 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 nout...@paiwastoon.com.af wrote: After our first deployment here in Afghanistan, we had to reinstall a lot of laptops because students accidentally deleted most of their activities. I think this is a great example of why we need to make a

Re: CL1B power distribution

2009-05-01 Thread Benjamin M. Schwartz
John Watlington wrote: the LED trick has the advantage of not requiring a change to the case, just a single additional drive pin to be able to run it as a detector. And where would you place said detector LED, without modifying the case ? While we're bikeshedding this to death, I'll put

Re: Fwd: Gnash loves the Via C7

2009-04-27 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Rob Savoye wrote: Benjamin M. Schwartz wrote: The XO-1 has hardware-accelerated XVideo, including YUV-RGB and scaling. Are you talking about hardware acceleration for the internal stages of video decoding, a la XvMC? Tests on a 1.0 GHz C7-M

Re: Fwd: Gnash loves the Via C7

2009-04-27 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Rob Savoye wrote: As of the 0.8.5 release, Gnash supports both XVideo an the MIT-SHM extension for better performance. It's just that these newer builds never seem to get built for the XO, although I drop binary snapshots as rpms on our

Re: Fwd: Gnash loves the Via C7

2009-04-26 Thread Benjamin M. Schwartz
Rob Savoye wrote: What would be truly awesome would be OpenGLES support on the XO 1.5. :-) Software rendering kills streaming video performance... I don't understand. Could you elaborate? The XO-1 has hardware-accelerated XVideo, including YUV-RGB and scaling. Are you talking about

Re: CL1B power distribution

2009-04-25 Thread Benjamin M. Schwartz
Richard A. Smith wrote: Ideally updates could be frequent enough to pick up a waveform from an unrectified power supply. (spare audio channel?) Don't have much in the way of EC cycles available. Don't have much EC ram left to cache values either. I can make the readings available via EC

Re: CL1B power distribution

2009-04-25 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 John Watlington wrote: Quick straw poll on how many people think it is useful enough have individual control over the power supplied to each connector to raise the cost of the laptop by $0.15 ? Turning off a single port to which nothing is

Re: Notes on service discovery XS/XO

2009-04-20 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Martin Langhoff wrote: The short of it is that mdns/dns-sd make sense for a small, underutilised network of peers. They assume that the network is a cheap resource, that broadcast messages are cheap, and that there is no coordinating server. mDNS

Re: XO Gen 1.5

2009-04-20 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 John Watlington wrote: The enabling chipset is hot off the fab line, the VX855 [2]. This single chip provides ... a 3D graphics engine, an HD video decoder It's worth remembering that the only existing driver that supports either of these

Re: [Server-devel] Notes on service discovery XS/XO

2009-04-20 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Martin Langhoff wrote: The short of it is that mdns/dns-sd make sense for a small, underutilised network of peers. They assume that the network is a cheap resource, that broadcast messages are cheap, and that there is no coordinating server. mDNS

Re: [BULK] Re: GPS on XO

2009-04-06 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hal Murray wrote: p...@laptop.org said: i guess i'd be a lot more worried if the volume name (or whatever it is that's being used as the device name) could contain a slash ('/') character. because that would no doubt render the device

Re: Google summer of Code?

2009-03-13 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Jameson Quinn wrote: Honestly, this is news to me. (and I am the co-administrator of the Sugarlabs program). If I had to articulate my view of our priorities, it would be something like the following: 7-10 points: Key sugar core improvements.

Re: Collaboration test environment problem

2009-03-02 Thread Benjamin M. Schwartz
James Simmons wrote: I have two PCs running Fedora 10 and the Sugar RPMs that come with that. One of the computers runs GNOME and the other uses Window Maker. I run sugar-emulate on both. One copy of Sugar uses the name jim and the other uses jsimmons. Both use the

Re: rotate button sucks on the XO

2009-03-01 Thread Benjamin M. Schwartz
Jordan Crouse wrote: NoiseEHC wrote: 2. An Xvideo RGB overlay displays the big nothing (black) while the screen is rotated. Indeed - XV is purposely turned off when the screen is rotated (or at least, not displayed): The LX hardware supports rotated blits, right? So in principle,

Re: getting mp3 sound working w/ Gnash easily

2009-02-27 Thread Benjamin M. Schwartz
S Page wrote: However, FWIW I just purchased the Fluendo MP3 decoder for $0 and installation on 8.2 on my XO was pretty straightforward if you're moderately familiar with the command line. Now I can play .mp3 files in Browse and Totem and _some_ Flash animations have sound in Gnash

Re: OS/X11 support for XO-1 hardware?

2009-02-25 Thread Benjamin M. Schwartz
da...@lang.hm wrote: It would allow for much improved video performance since you could play back a 320x240 video on the full screen at considerable CPU savings. except that you would spend those CPU savings doing the scaling up from 320x240 to the higher resolution. Argh and double

Re: [Sugar-devel] Future of Rainbow + Sugar?

2009-02-24 Thread Benjamin M. Schwartz
Wade Brainerd wrote: To me, Bitfrost was just one more lofty windmill OLPC tried to tilt because it seemed like an interesting challenge. I'm not clear why Sugar needs more protection from rogue activities than a normal desktop environment has from rogue applications. Reinventing the

Re: [Sugar-devel] Future of Rainbow + Sugar?

2009-02-24 Thread Benjamin M. Schwartz
Martin Langhoff wrote: Maybe my ignorance on matters selinux is showing? ;-) You are not alone. Sugar/OLPC simply never had SELinux experts who volunteered to work on Rainbow. We still don't (raise your hand if you consider yourself proficient at writing SELinux policy!). It's hard to write a

Re: On optimizing Theora

2009-02-22 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tiago Marques wrote: Can you please try both options with also the following ones:*-ftree-vectorize -funroll-loops -m3dnow (1) libtheora automatically adds the flags -O3 -fforce-addr - -fomit-frame-pointer -finline-functions -funroll-loops to any

Re: On optimizing Theora

2009-02-20 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tomeu Vizoso wrote: On Fri, Feb 20, 2009 at 06:41, qu...@laptop.org wrote: On Fri, Feb 20, 2009 at 12:28:42AM -0500, Benjamin M. Schwartz wrote: GCC 4.3 evidently does not do a very good job of optimizing for geode. What percentage of CPU time

On optimizing Theora

2009-02-19 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I have been testing libtheora-1.0 on a MP XO. On build 767, using F9's gcc-4.3, I compiled libtheora with CFLAGS=-march=geode. I tested encode, with the command time encoder_example -v 1 coastguard_cif.y4m /dev/null using the test video from

Re: Unshare an Activity

2009-02-16 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Jorge Saldivar wrote: Thanks Bert! But, even if you initiated the sharing, you can leave the shared activity. After an activity has been shared, all participants are equal. I know that I you join a shared activity you can leave it, calling

Re: Unshare an Activity

2009-02-16 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hal Murray wrote: This is the problem with your understanding. A shared activity is _initiated_ by one user, but this user does not _own_ the shared activity. The user who initially shared the activity can turn off his computer, and the other

Re: power consumption after shutdown

2009-02-13 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Mikus Grinbergs wrote: I take this to mean that *something* was draining some power for the two days the XO was sitting in its shut down state. All rechargeable batteries lose stored energy over time. The phenomenon is called self-discharge. It

Re: Guidance sought on collaboration techniques

2009-02-11 Thread Benjamin M. Schwartz
James Simmons wrote: When I wrote collaboration into the View Slides activity I just copied the code from the base Read activity so I could copy an entire slideshow from one machine to another. That didn't work all that well No? It would be good to know why. Also, Telepathy now has a

Re: Treatise on Formatting FLASH Storage Devices

2009-02-04 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 da...@lang.hm wrote: On Wed, 4 Feb 2009, Mitch Bradley wrote: http://wiki.laptop.org/go/How_to_Damage_a_FLASH_Storage_Device Read it and weep. this completely ignores wear leveling, which is very nessasary for just about any filesystem, but

Re: Treatise on Formatting FLASH Storage Devices

2009-02-04 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Mitch Bradley wrote: It has been my experience that USB sticks and SD cards with intact factory formatting tend to last longer and run faster than ones that have been reformatted with random layouts. This gives us Linux users a bit of a dilemma

Re: OLPC upgrades

2009-02-03 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 da...@lang.hm wrote: the fact that KDE and GNOME (both desktops that are considered pigs on normal machines) make a XO laptop seem snappy by comparison to Sugar (as of December) means that there is a significant problem with Sugar. I'm not happy

Aside: Neighborhood participants

2009-02-02 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Morgan Collett wrote: Also don't blame avahi for the fact that we send out updates every time you alt-tab between shared activities, so that your icon can jump to the appropriate snowflake on everyone else's Neighborhood Views... I _strongly_

Re: [Sugar-devel] Is it possible to disable sharing for an Activity?

2009-02-02 Thread Benjamin M. Schwartz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Eben Eliason wrote: I think that the addition of a new property in the activity.info file would be logical here. Make it an integer indicating the maximum number of supported participants. OK, but as an Activity author I might like to specify

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