Mythbuntu è una distribuzione, derivata di Ubuntu che permette di trasformare il proprio sistema GNU/Linux in una postazione multimediale o in un Linux Media Center, come dir si voglia.
È chiaramente improntata sull'esempio fornito dalle sue dirette concorrenti Knoppmyth e Mythdora, rispettivamente basate su Knoppix e Fedora, altre due ben conosciute ed apprezzate distribuzioni. Essenzialmente è possibile pensare a Mythbuntu come un sistema Ubuntu pre-configurato per l'utilizzo di MythTV, un software libero per il pinguino concepito per trasformare il proprio computer in un Personal Video Recorder.
Analizziamo brevemente le principali caratteristiche di MythTV che avrete a disposizione una volta installata Mythbuntu sul vostro mediacenter targato GNU/Linux. C'è naturalmente la possibilità di guardare la televisione facendo pause e riavvolgimenti. È offerto il supporto a svariate schede di cattura video per registrare uno o più programmi per volta, come pure ai programmi in SDTV e HDTV attraverso l'utilizzo della porta firewire. L'architettura è client-server. I server, chiamati backends, mettono a disposizione dei client, denominati frontends, una serie di programmi televisivi registrati. C'è la possibilità di uso combinato di più schede di cattura video: MPEG-2, MJPEG, DVB, HDTV, USB e dispositivi firewire. Come per ogni media Center che si rispetti per alcuni paesi è possibile visualizzare una guida TV, una sorta di palinsesto, su tutti i programmi televisivi. Non mancano svariati plug-in per abilitare MythTV alla riproduzione e alla lettura di: DVD, collezioni video, musica, news, giochi e molto altro ancora.
Visto che all'interno del software MythTV vengono utilizzati alcuni prodotti non tutelati dalla licenza GPL, il progetto Mythbuntu non è direttamente legato alla Canonical, la società che finanzia il progetto Ubuntu. Qualcuno di voi potrebbe tranquillamente chiedersi il perché della creazione di una distribuzione pronta all'uso per MythTV quando è poi possibile scaricare il software necessario e installarlo direttamente sul proprio sistema su qualsiasi distribuzione. Il problema è proprio questo.
Per rendere MythTV perfettamente funzionante c'è bisogno di una fase di installazione, manuale, molto lunga e complicata. Bisogna soddisfare un mucchio di dipendenze e compilare abbastanza pacchetti da rendervi la vita difficile. E così, nella maggior parte dei casi non si arriva al risultato sperato, cioè il corretto funzionamento del pacchetto. All'interno di Mythbuntu non sono presenti software inutili per un media center come ad esempio OpenOffice, Evolution, GNOME e quant'altro. Tuttavia è possibile installarli attraverso i repository ufficiali di Ubuntu.
Installare Mythbuntu è davvero semplice. La fase di installazione ricorda molto quella di Ubuntu a differenza del fatto che vi verrà chiesto, ovviamente, di configurare le vostre schede di acquisizione audio e video. Verrete poi guidati passo dopo passo alla messa a punto del vostro nuovo e fiammante media center.
Aggiornamenti:
Ben Dailey has announced the release of Mythbuntu 10.10, a specialist variant of Ubuntu designed for home theatre PCs: "Mythbuntu 10.10 has been released. With this release, we are providing mirroring on sponsored mirrors and torrents. It is very important to note that this release is only compatible with MythTV 0.23.1 systems. Previous Mythbuntu releases can be upgraded to a compatible version with the builds located at here, for a more detailed explanation see here. Highlights: swanky new installer; Mythbuntu-bare, a backup and restore utility for your MythTV configuration files; MythTV 0.23.1; preview of the upcoming MythNetvision plugin; Mythbuntu theme fixes."
Read the complete release announcement for more details and a list of known issues.
Download (SHA256): mythbuntu-10.10-desktop-i386.iso (643MB, torrent), mythbuntu-10.10-desktop-amd64.iso (685MB, torrent).
The Mythbuntu team provides a package (mythbuntu-repos) to allow users to easily activate additional update repositories for software shipped with Mythbuntu. The packaging used to create these builds is identical to that being used for content in the Ubuntu archive.
- The MythTV-Updates repository will contain updated MythTV software. It is automatically built each day when there are upstream fixes available.
Selecting a MythTV series will only get you updates for that series. So if you select MythTV 0.24, you would receive any updates that upstream release to the 0.24 series only. To change to another series (such as 0.25), simply open the Mythbuntu Control Centre, and modify the Repositories tab.
- The Mythbuntu-Updates repository will contain fixes for software written specifically for Mythbuntu such as Mythbuntu Bare, Mythexport, Mythbuntu Log Grabber.
After installing the Mythbuntu Repos package, you'll need to open up Update Manager and check for updates to finish the upgrade.
Common use cases for using Mythbuntu Repos.
- You want to stay up to date on a particular version of MythTV in order to get bug fixes.
- Enable MythTV Updates and select the version of MythTV you want to keep up to date.
- You want to test the development version of MythTV
- Enable MythTV Updates and select the highest version available to you. If you are on an older release of Mythbuntu, the highest version available to you may not be the development version. Instead it could be the current release or a previous release (depending on how old your Mythbuntu install is)
- The next version of MythTV has hit beta, and you want to upgrade to that version, but not get development builds once that version has been released.
- Enable MythTV Updates and select the next version after the current release. (eg. if the current release is 0.24, select the 0.25 version) A MythTV Updates repository for a specific MythTV version will NEVER advance to a higher version (0.25 repository will never, ever get MythTV builds for 0.26. Once upstream creates a 0.25 fixes branch, the 0.25 repository will follow that)
- Which build should I pick?
- Most people will want to select the most current released MythTV version. This version contains fixes as it is built from the fixes branch upstream. (Please see MythTV.org to find the current released version).
- Which mirror should I pick?
- Pick the one closest to you. All of the builds happen on the PPA, and are mirrored to other locations within a few hours.
- I wasn't asked what mirror to use. This isn't working!
- You might have configured debconf such that you aren't asked the priority of questions used. Open up Mythbuntu Control Centre (MCC) or run:
- sudo dpkg-reconfigure mythbuntu-repos
- The builds still aren't working:
- The builds disappeared after I upgraded Ubuntu releases:
- Update Manager turns off third party repositories on upgrade. Open up Mythbuntu Control Centre after the upgrade to reactivate.
- Why are there so many updates? I swear, they're happening every day. I just want the ones with important changes.
- There is no way to differentiate between the changes that happen upstream and discriminate between "important" and "nice to have" changes. The builds are only ran if there actually are changes made by upstream. If there aren't new changes, a new build isn't launched. Take a look at http://svn.mythtv.org/trac/timeline for more information about what is changing from build to build.
- How long will you keep doing builds for my version of Ubuntu?
- If your version of Ubuntu is an LTS release, you can expect to have any MythTV version released up until the next Ubuntu LTS available to you.
- If your version of Ubuntu is a standard release, you will have the version of MythTV that was available in that release as well as one more afterward. So if the release launched with 0.23, you will have 0.23 and 0.24 available to you.
- How can I find out what MythTV builds are available for each release?
- The mythbuntu-repos.db file can be viewed here. This file is used by the mythbuntu-repos package to determine which MythTV releases are available to a specific Mythbuntu release. It should be pretty straight forward to download this file and determine which builds happen for which releases. This file gets updated for each new MythTV release.
- I see there is a series listed that doesn't exist yet upstream (eg. 0.25). How is this possible?
- The Mythbuntu team provides repos for each MythTV series. The development builds (often referred to as trunk) will be available in a repo named for the next major MythTV release. (ie. If 0.24 is the current version, trunk builds will be in the 0.25 repo even if upstream doesn't have a 0.25 branch yet). This allows users to select the development version and through regular updates eventually get that version when it is released.
- I originally selected the version of MythTV that was in development (eg. 0.24). Now that it has been released, am I going to continue to get development builds? Do I need to change something in order to get builds from the 0.24 fixes branch?
- No you do not need to change anything. If you originally selected a development version, when upstream releases that version and creates a fixes branch for it, the 0.24 repo will build from the 0.24 fixes branch.
Screenshots.
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Mythbuntu è una distribuzione, derivata di Ubuntu che permette di trasformare il proprio sistema GNU/Linux in una postazione multimediale o in un Linux Media Center, come dir si voglia.
Install the Mythbuntu-repos package
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