12.1.0 release candidate 5 (build 18) released

[Daniel Drake]

Hi,

We're pleased to announce the next release candidate of our new 12.1.0
software release.

Information and installation instructions can be found here:
http://wiki.laptop.org/go/Release_notes/12.1.0

Quick links for those who know which files need to be grabbed and save
to USB disks:
http://download.laptop.org/xo-1.75/os/candidate/12.1.0-18/
http://download.laptop.org/xo-1.5/os/candidate/12.1.0-18/
http://download.laptop.org/xo-1/os/candidate/12.1.0-18/

This is a signed release candidate that can be installed on all XOs,
even those with security enabled.

We're looking for testing and feedback on all aspects of the system.
Thanks for any help you can offer, and for all the feedback that was
received throughout development.

We're hoping to release this as soon as possible, pending some final
issues being worked on.

Please review the "Known problems" section of the release notes. Some
documented issues are carried over from previous releases, but others
are new and are things that we will aim to fix in the time remaining
before release.

Compared to 12.1.0 release candidate 4 (build 17), we have fixed and changed:

Use of sensors in Measure on XO-1.75 has been fixed (#11996).

An occasional hang on shutdown/reboot (commonly seen in runin testing)
has been fixed (#11949), and the runin screen on XO-1.5 is no longer
black for the first two minutes (#11985).


Thanks!