Raspbian

Raspbian è un sistema operativo libero basato su Debian GNU/Linux e ottimizzato per l’hardware del Raspberry Pi (architettura armhf). Raspbian fornisce oltre 35.000 pacchetti, o software precompilato in una forma che semplifica l’installazione sul Raspberry Pi.

Versione 2017-08-16

Questa versione contiene (in Inglese):

It’s now just under two years since we released the Jessie version of Raspbian. Those of you who know that Debian run their releases on a two-year cycle will therefore have been wondering when we might be releasing the next version, codenamed Stretch. Well, wonder no longer – Raspbian Stretch is available for download today!

The differences between Jessie and Stretch are mostly under-the-hood optimisations, and you really shouldn’t notice any differences in day-to-day use of the desktop and applications. (If you’re really interested, the technical details are in the Debian release notes here.)

However, we’ve made a few small changes to our image that are worth mentioning.

New versions of applications

Version 3.0.1 of Sonic Pi is included – this includes a lot of new functionality in terms of input/output. See the Sonic Pi release notes for more details of exactly what has changed.

Bluetooth audio

In Jessie, we used PulseAudio to provide support for audio over Bluetooth, but integrating this with the ALSA architecture used for other audio sources was clumsy. For Stretch, we are using the bluez-alsa package to make Bluetooth audio work with ALSA itself. PulseAudio is therefore no longer installed by default, and the volume plugin on the taskbar will no longer start and stop PulseAudio. From a user point of view, everything should still work exactly as before – the only change is that if you still wish to use PulseAudio for some other reason, you will need to install it yourself.

Better handling of other usernames

The default user account in Raspbian has always been called ‘pi’, and a lot of the desktop applications assume that this is the current user. This has been changed for Stretch, so now applications like Raspberry Pi Configuration no longer assume this to be the case. This means, for example, that the option to automatically log in as the ‘pi’ user will now automatically log in with the name of the current user instead.

One other change is how sudo is handled. By default, the ‘pi’ user is set up with passwordless sudo access. We are no longer assuming this to be the case, so now desktop applications which require sudo access will prompt for the password rather than simply failing to work if a user without passwordless sudo uses them.

Scratch 2 Sense HAT extension

In the last Jessie release, we added the offline version of Scratch 2. While Scratch 2 itself hasn’t changed for this release, we have added a new extension to allow the Sense HAT to be used with Scratch 2. Look under ‘More Blocks’ and choose ‘Add an Extension’ to load the extension.

This works with either a physical Sense HAT or with the Sense HAT emulator. If a Sense HAT is connected, the extension will control that in preference to the emulator.

Fix for Broadpwn exploit

A couple of months ago, a vulnerability was discovered in the firmware of the BCM43xx wireless chipset which is used on Pi 3 and Pi Zero W; this potentially allows an attacker to take over the chip and execute code on it. The Stretch release includes a patch that addresses this vulnerability.

There is also the usual set of minor bug fixes and UI improvements – I’ll leave you to spot those!

Risorse

La distribuzione può essere scaricata da:

Il sito web della distribuzione è: http://www.raspbian.org/

Screenshot

Conclusioni

L’aggiornamento dalla versione precedente è possibile ma sconsigliato.

Raspbian 2017-08-16