NEW FORM OF XO-1 "Bricking"     May 2023

XO-1's with firmware Q2D03 may not boot into software. Instead they boot into the test program "bacteria growth".  If date year is set to year 2022 or less (via internal 3 Volt serial port) then subsequent steps can restore normal booting.  If date year is set to 2023, subsequent steps will not restore normal booting.  Other early firmware may behave similarly.  If the clock battery is fully discharged, the XO-1 may show a clock error , stop and then power off.  If the clock battery is charged and the clock date is set via the internal serial port, then the XO-1 behaves as described above.

YUM INSTALL OR UPDATE  MAY FAIL     Nov 2019

Repos in directory /etc/yum.repos.d have mirror line set to "https:" and some mirrors may require "http:" .

Alternative to mirror is to uncomment baseurl lines and comment out mirror lines. 

For fedora*.repo , then add to the path "archive/" after "pub/"

http://lists.laptop.org/pipermail/devel/2019-November/039069.html

BATTERIES WITH REDUCED RUNTIME CAN BE "RE-BALANCED" TO RESTORE    Mar 2019

Firmware command "bat-recover"  with repeated 10 second charging interruptions can be used to increase run time by re-balancing two cells in the battery. Unbalance is a state where one of the cell is more discharged.

https://lists.laptop.org/pipermail/power/2019-March/000259.html