Dextrose

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The deployments' XO Operating System

Dextrose is a Sugar distribution for the XO-1 and XO-1.5 jointly developed by Activity Central, Paraguay Educa, Plan Ceibal and Sugar Labs in collaboration with the OLPC and Sugar community.

Our focus is stability and usability in the classroom, but we've also merged some new features contributed by deployments and freelance contributors.

New features in Dextrose

Backport of Sugar 0.88 (Bernie Innocenti)
Journal sorting options (Andrés Ambrois)
Intuitive resource monitoring (Anish Mangal)
Journal Backup/restore to removable devices (Martin Abente, Esteban Arias)
Journal Backup/restore to schoolserver (Martin Abente)
Protected activities support ( Martin Abente)
Improved GSM/3G handling (Daniel Castelo, Martin Abente)
Tabbed browsing (Anish Mangal)
Virtual keyboard (Esteban Arias)
Accessibility features (Esteban Arias)
Journal repair functionality (Esteban Arias)
Fast switching between touchpad and pen-tablet modes (Walter Bender)
OLPC Microformat support in activity updater (Akash Gangil, Anish Mangal)
Ad-hoc Networks (Simon Schampijer)
Ability to reissue registration to schoolserver (Martin Abente)
Extensive field testing (Bernie Innocenti)

Dextrose 2

This is a Test Build. Targeted for use by multiple deployments worldwide. Based on the latest Dextrose1, this build adds additional language support, and removes country specific logos. While stable and ready for general use, we do appreciate feedback and bug reports.

Hardware	OS Images	Size	Date
XO-1	os4dx2.img os4dx2.crc	632MB	Oct 27 2010
XO-1 No GNOME	os4dx2s.img os4dx2s.crc	523MB	Oct 27 2010
XO-1.5	os4dx2.zd	522MB	Oct 27 2010
XO-1.5 No GNOME	os4dx2s.zd	439MB	Oct 27 2010

Changelog:

os4dx2:

 Pidgin is included in place of Empathy
 New Edit activity is included
 Updated Cairo for faster rendering

os3dx2:

 Fix for Buddy icon not re-centered on screen rotation
 Fix for Gnome theme can't play full speed - XO-1 only
 Partial fix for no feedback when you Start a journal entry that no activity can open

Dextrose 1

This is a Release Candidate. This build has been tested in two classrooms for over one month. We believe them to be stable and ready for general use. If no further issues are discovered, the RC will become our final Dextrose 1 release.

Hardware	OS Images	Size	Date
XO-1	os373pyg.img os373pyg.crc	518MB	Aug 15 2010
XO-1.5	os373pyg.zd	557MB	Aug 15 2010

Installation

XO-1

First, ensure that your laptop is unlocked.
Download both osNdx2.img and osNdx2.crc to the root directory of a USB stick
Drop to the "ok" prompt by pressing ESC repeatedly during boot
Type the command: copy-nand u:\osNdx2.img followed by ENTER
Wait for the display to fill in with color and the "ok" prompt to return
Type the command reboot followed by ENTER
The XO will reboot, finish writing, reboot itself, and take you to the naming and color choice process
During the reboots, keep the charger connected to allow OFW to self-update

XO-1.5

First, ensure that your laptop is unlocked.
Download osNdx2.zd to the root directory of a USB stick
Drop to the "ok" prompt by pressing ESC repeatedly during boot
Type the command: fs-update u:\osNdx2.zd followed by ENTER
Wait for the display to fill in with color and the "ok" prompt to return
Type the command reboot followed by ENTER
The XO will reboot and take you to the naming and color choice process

Using Dextrose2 in your deployment

We're happy to help other deployments produce their own OS images independently of us, thus exploiting the Freedom #1 provided by Free Software.

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