XO Troubleshooting Guide

This is a troubleshooting guide for the XO laptop. It is geared toward troubleshooting production units running firmware version Q2D03 or greater.

Still very much a work in progress!! Feel free to add

Problems powering on

For an introduction to the different boot options selectable while powering on, see the Cheat codes.

All of these tests assume that a known good source of power is available, either a charged battery or power adapter. To debug problems with the power source, and battery charging issues, see Power and Battery problems.

Is the Power LED On ?

When the power button is pressed once, the power LED doesn't turn on.

Please try Resetting the Embedded Controller.

Is the display lighting up ?

When the power button is pressed once, the power LED turns on, but the screen doesn't light up

Is the boot sound playing ?

If no boot sound is played, but the machine boots normally, see Audio Problems.

Common Procedures

Rebooting the Embedded Controller

The XO embedded controller (EC) occasionally becomes confused. To reset it, remove all power sources from the laptop:

1. Take the battery out and remove the power adapter
2. Wait 10 seconds to allow the embedded controller to lose power and reset
3. Replace at least one source of power (battery or power adapter)