- [Instructor] Hello and welcome to the latest
Raspberry Pi OS version release.
As some of you may know, every two years,
Debian Linux on which Raspberry Pi OS is based
gets a major version upgrade.
Debian buster has been the basis of Raspberry Pi OS
since its release in 2019,
and Debian bullseye was released last month.
And yes, if those names sound familiar,
it's the trend of new Debian version upgrades
to be named after "Toy Story" characters.
Many of the changes in the Debian upgrade
are under the hood.
However, we've made a few extra changes
to our desktop experience
that we want to share with you today.
Firstly, there've been some behind the scenes updates
to how our applications look and feel.
Thanks to an upgrade from GTK+ 2 to GTK+ 3.
GTK+ is a layer of software which applications can use
to draw standard user interface components or widgets,
so that all applications have a consistent look and feel.
An example of this change can be seen
in how tabbed interfaces appear.
However, much of the desktop experience
will visually seem unchanged.
This upgraded GTK+ 3
allows us to use a new window manager called Mutter,
which not only allows us to produce good looking
Window features such as drop shadow and animation,
but also allows us to take necessary steps
towards the Wayland Window system.
More information on the GTK+ 3 changes,
Mutter, and Wayland can be found
in today's OS launch blog posts written by Simon Long.
Visit rptl.io/osnov21 or follow the link
in the video description below.
So what else is new?
For starters, we've included a new notification system
and to show you how it works,
I'll insert a USB flash drive and remove it again.
As you can see,
a notification has appeared in the top corner,
reprimanding me for moving the drive
without first ejecting it.
This notification system can also be used
by any plug-ins and accessed via other applications.
To make changes to the notifications,
simply right click on the taskbar
and select Panel options.
And here you can change the notification background color,
you can change the font color,
you can also change how long notification stays
on your desktop before it times out.
So as long as your Raspberry Pi
is connected to the internet,
you'll also receive notifications
for any operating system updates.
As this is a fresh install of the new OS,
I can't show you this feature in action,
but here are some screenshots to show you
what you can expect to see when an update is available.
We've also made changes to the video and camera drivers.
The KMS driver, which was an experimental option
in the previous release is now the standard video driver
in this release.
And the driver used by Raspberry Pi to access camera modules
has now been replaced with libcamera,
which is a standard Linux API.
One of the main reasons for these changes
is to allow for less closed source proprietary code,
which makes it easier for third parties
to develop new Raspberry Pi compatible
hardware and software.
Those familiar with Bookshelf
will also notice the inclusion of Custom PC magazine.
The Bookshelf app allows users to download
free PDFs of all of our publications,
our magazines and books direct to your Raspberry Pi
the day they're released.
As usual where the major upgrade like this,
most applications have been upgraded to the latest version.
In particular, the Chromium web browser has been updated.
It's now version 92 and has been optimized
to use the Raspberry Pi hardware
to accelerate video playback.
If you're planning to upgrade to this new version
of Raspberry Pi OS, we recommend using a new image
and reinstalling any applications
and moving any data across from your current version.
Major upgrades contain a lot of changes
and even the smallest tweak on your current OS version
could cause issues with the standard upgrade via terminal.
The easiest way to install a new image of Raspberry Pi OS
to your SD card is to use the Raspberry Pi Imager,
which is a free application available on our website.
Imager shows that you're always installing
the latest version of Raspberry Pi OS
as well as other third-party operating systems.
And that's everything from us today.
As I said, if you want to read in more detail
about this latest upgrade, simply go to rptl.io/osnov21,
or visit the link in our description
or head over to raspberrypi.com and find it there.
If you have any questions at all,
or any comments about this version of the operating system,
the best place to leave them is on our blog
as Simon will be there answering questions,
but do let us know what you think of it as well
in the comments here on YouTube.
And we will see you soon.