UK Linux User Groups

'The Electric Club'
St Marks Road,
Chapel Ash,
Wolverhampton WV3 0QH.

A chance for the LUG to present the benfits of Linux and Open Source Software
Entry Fee - £ by way of donation,
Car Park
Make use of the bar & refreshments
Special interest groups (That's us!)

Event Date and Time:  Sun, 19/05/2013 - 10:00 - 14:00

As many of you will know, our goal is to get the Ubuntu phone in a state where it can be used on a daily basis for testing, and importantly, finding bugs, UI issues, and other details that help us to refine the overall Ubuntu Touch experience. Progress is on-track for the end of May.

I decided to start dogfooding a little early (please remember, we are shooting for the beginning of July to be broadly in shape for dogfooding, so if you try, don’t expect things to be ready right now), so today I put my SIM card in my Galaxy Nexus with Ubuntu Touch and things are working pretty well so far. It seems that my data is no longer getting wiped on image updates, which helps testing significantly, so I am regularly upgrading with the daily images.

As ever, if you decide to test, you are doing so at your own risk…don’t be surprised to see bugs, crashes, and potential data loss (although I have not seen any data loss so far).

Some notes about my experience dogfooding:

• Making and recieving phone calls works well. I am using T-Mobile as my network.
• Sending and recieving texts works well too. Messages appear chronologically.
• Contact syncing is not in place but Sergio blogged about how to sync your contacts from Google. This has made my phone infinitely more useful and rather nicely, it pulls in the avatars too so I can see who is calling me.
• Browsing and connecting to wireless networks works well.
• The browser works well overall, although currently requires wifi (3G browsing coming soon).
• Camera works well (for still photos, video not implemented yet) and I can browse my pictures in the gallery.
• Many of the community-written core apps are present and working. Calendar lets me save and browse calendar events (although syncing with a calendar service is not there yet). Weather shows me the weather for my area right now and a week long forcast. Calculator is working and largely feature-complete. Other core apps are on their way to the daily image soon.
• Overall the core Unity UI is working well. I can search for apps, load them, quit them, multi-tasting works well, and the indicators work (for adjusting volume etc).

The primary blockers in my way right now for normal use out and about are:

• The screen does not auto shut-off. This means if the screen gets turned on in my pocket it never turns off and the battery dies.
• Speakerphone not wired into the UI yet.
• Can’t set the time on the phone yet. Also, the alarm feature in the clock doesn’t work; I need this to get me up in the morning.
• Not so much a blocker, but the phone is still filled with example material and contacts. They need to be removed.

All of these are on the TODO list for completion by the end of the month.

I have been filing bugs for a bunch of the issues I am seeing on a day to day basis and the team are working hard to hit the end of May goal. Overall progress is looking good.

Although I have been using the daily images for quite some time on a phone without a SIM card, using as an actual phone is even more motivating than before. I can feel the phone coming together and when we get many of these issues fixed, it is going to deliver a far superior experience than the Android phone I was using before.

Put it in your calendars .. May 28th is Fedora 19 virtualization test day.

New features include nested virtualization on Intel, new Boxes, new libosinfo, new qemu, KMS-based spice driver, live storage migration and virtio RNG.

Every day is libguestfs test day. Just follow the instructions here.

Customer: "Can you quote me for two HP DC7700 and the other bits we discussed?"
Me: "Sure no problem, the 7700's are £145.00 each by the way."
Customer: "Ooh that price is really good, I might take nine instead. How much for nine, is there a discount?"

Hang on a sec, because it's such a good price you want seven extra but you want them even cheaper still? tell you what, just buy the two at the fair price I'm selling them at.

OpenSCAP is a project that lets you scan physical machines looking for known vulnerabilities or configuration problems (like public-writable directories).

Obviously it would be good to use this to scan guests, especially in a cloud scenario where you want to help naive users not to deploy guests that are just going to get pwned the minute they go online.

New upstream in OpenSCAP is the ability to scan chroots. You can use this to scan containers, or using guestmount, scan offline guests.

Usage with guestmount is described here or here.

(Thanks Daniel Kopecek and Peter Vrabec)

Following on from the first event in March of this year where we had a great day of talks covering varying topic I am very happy to announce the next HacknTalk will take place on the 29th June at the Google Campus again in London. For those who missed it we had a great turn out and had talk [...]

A while back I started a project called the Ubuntu Advocacy Kit. The goal is simple: create a single downloadable kit that provides all the information and materials you need to go out and help advocate Ubuntu and our flavors to others. The project lives here on Launchpad and is available in this daily PPA. If you want to see the kit in action just run:

sudo add-apt-repository ppa:uak-admins/uak sudo apt-get update sudo apt-get install uak-en

Now open the dash and search for “advocacy”. Click the icon to see the kit load in your browser.

We discussed the UAK this week at UDS and I want to get the kit to 1.0 level of completeness. This doesn’t require a huge amount of work, just getting a core set of content written up in a concise, simple, but detailed fashion. I want to complete this work and then get the kit up on loco.ubuntu.com as something people can download to get started advocating Ubuntu and our flavors.

I have created a blueprint to track this work and I am stubbing out a bunch of pages in the kit for pages that I think we will need as part of a 1.0 release.

And why are you telling me this?

Well, I am looking for help.

If you enjoy writing and have a knowledge of good quality advocacy, I would like to invite you to write some content. If you can just reply to this post in the comments (or anywhere else I tend to look, such as email or IRC), we coordinate who works on what and I will update the blueprint where appropriate.

Thanks for reading!

Recently the Technical Board made a decision to sunset Brainstorm, the site we have been using for some time to capture a list of what folks would like to see fixed and improved in Ubuntu. Although the site has been in operation for quite some time, it had fallen into something of a state of disrepair. Not only was it looking rather decrepit and old, but the ideas highlighted there were not curated and rendered into the Ubuntu development process. Some time ago the Technical Board took a work item to try to solve this problem by regularly curating the most popular items in brainstorm with a commentary around technical feasibility, but the members of the TB unfortunately didn’t have time to fulfill this. As such, brainstorm turned into a big list of random ideas, ranging from the sublime to the ridiculous, and largely ignored by the Ubuntu development process.

Now, some folks have mused on the decision to sunset brainstorm and wondered if this is somehow a reflection on our community and our openness to ideas. I don’t think this is the case. While it is always important to build an environment where ideas are openly discussed and debated, ideas are free and relatively simply to come by, and the real challenge is converting that awesome vision in your head into something we can see and touch and deliver to others; this is not quite so free and simple. While Brainstorm provided a great place to capture the ideas, and we had no shortage of them, the challenge was connecting brainstorm to the people who were happy and willing to perform the work, and it didn’t really serve this purpose very well.

There were two problems with this. Firstly, picking up other people’s popular ideas is not how Open Source traditionally works. Open Source is built on a philosophy of scratching your own itch, traditionally fueled by programmers fixing their annoyances and building features and applications they want. Now, this is not to say a non-programmer can’t rally the community around their idea and build momentum around an implementation, but doing this requires significantly more effort than a fire and forget submission into brainstorm. In other words, just because an idea is popular doesn’t necessarily mean it is interesting enough for a developer to want to implement it. Secondly, brainstorm started to garner an unrealistic social expectation that popular ideas would be automatically added to the TODO list of prominent Ubuntu developers, which was never the case.

Today at UDS we had a discussion about these deficiencies in brainstorm in traversing the chasm between idea and implementation and Randall Ross had an interesting idea. With brainstorm retired we should re-focus the brainstorm URL and provide some guidance for tips and tricks for how to take an idea and rally support around it to develop an implementation. As an example, over the years I have discovered that taking an idea and building a well formed spec with detailed UI mock-ups and architectural diagrams, a detailed blueprint, regular meetings, and burndown charts, all significantly help to taking ideas from fiction to fandom. Equipping our community with the skills and tools to bring these ideas to fruition is a better use of our time.

So, the TL;DR of all of this is…brainstorm was a great idea at the time, but it didn’t effectively drive the most popular ideas in our community to fruition and delivery in Ubuntu. We want to help provide guidance and best practice to help our community be more successful in converting their ideas into development plans and getting people interested in participating.

While Puppet may get all the glory, Facter, the hard working information gathering library that can, seldom gets much exciting new functionality. However with the release of Facter 1.7 Puppetlabs have standardised and included a couple of useful facter enhancements that make it easier than ever to add custom facts to your puppet runs.

These two improvements come under the banner of 'External Facts'. The first allows you to surface your own facts from a static file, either plain text key value pairs or a specific YAML / JSON format. These static files should be placed under /etc/facter/facts.d

$ sudo mkdir -p /etc/facter/facts.d # note - the .txt file extension $ echo 'external_fact=yes' | sudo tee /etc/facter/facts.d/external_test.txt external_fact=worked $ facter external_fact worked

At its simplest this is a way to surface basic, static, details from system provisioning and other similar large events but it's also an easy way to include details from other daemon and cronjobs. One of my first use cases for this was to create 'last_backup_time' and 'last_backup_status' facts that are written at the conclusion of my backup cronjob. Having the values inserted from out of band is a much nicer prospect that writing a custom fact that parses the cron logs.

If that's a little too static for you then the second usage might be what you're looking for. Any executable scripts dropped in the same directory that produce the same output formats as allowed above will be executed by facter when it's invoked.

# scripts must be executable! $ sudo chmod a+rx /etc/facter/facts.d/process_count $ cat /etc/facter/facts.d/process_count #!/bin/bash count=$(ps -efwww | wc -l | tr -s ' ') echo "process_count=$count" $ facter process_count 209

The ability to run scripts that provide facts and values makes customisation easier in situations where ruby isn't the best language for the job. It's also a nice way to reuse existing tools or for including information from further afield - such as the current binary log in use by MySQL or Postgres or the hosts current state in the load balancer.

While there have been third party extensions that provided this functionality for a while it's great to see these enhancements get included in core facter.

Hot on the heels of my last post showing Unity 8 running on Mir on a Macbook Pro Retina, there were some folks who were curious about how well Unity and Mir work on a phone.

Well, thanks to your friend and mine, Kevin Gunn, you can see a video of Unity 8 on Mir running on a Galaxy Nexus (which is by no means a super-powerful smartphone these days):

Can’t see the video? See it here!

Again, just to emphasize, this has not been through a round of performance optimizations, so you can expect additional performance improvements in the future, but I think this demonstrates that we are heading in the right direction.

If you are interested in participating in Mir development, click here and if you are interested in participating in Unity 8, click here.

Today my main machine was down for about 8 hours. Oops.

That meant when I got home, after a long and dull train journey, I received a bunch of mails from various hosts each saying:

• Failed to fetch slaughter policies from rsync://www.steve.org.uk/slaughter

Slaughter is my sysadmin utility which pulls policies/recipies from a central location and applies them to the local host.

Slaughter has a bunch of different transports, which are the means by which policies and files are transferred from the remote "central host" to the local machine. Since git is supported I've now switched my policies to be fetched from the master github repository.

This means:

• All my servers need git installed. Which was already the case.
• I can run one less service on my main box.
• We now have a contest: Is my box more reliable than github?

In other news I've fettled with lumail a bit this week, but I'm basically doing nothing until I've pondered my way out of the hole I've dug myself into.

Like mutt lumail has the notion of "limiting" the display of things:

• Show all maildirs.
• Show all maildirs with new mail in them.
• Show all maildirs that match a pattern.
• Show all messages in the currently selected folder(s)
  • More than one folder may be selected :)
• Shall all unread messages in the currently selected folder(s).

Unfortunately the latter has caused an annoying, and anticipated, failure case. If you open a folder and cause it to only show unread messages all looks good. Until you read a message. At which point it is no longer allowed to be displayed, so it disappears. Since you were reading a message the next one is opened instead. WHich then becomes marked as read, and no longer should be displayed, because we've said "show me new/unread-only messages please".

The net result is if you show only unread messages and make the mistake of reading one .. you quickly cycle through reading all of them, and are left with an empty display. As each message in turn is opened, read, and marked as non-new.

There are solutions, one of which I documented on the issue. But this has a bad side-effect that message navigation is suddenly complicated in ways that are annoying.

For the moment I'm mulling the problem over and I will only make trivial cleanup changes until I've got my head back in the game and a good solution that won't cause me more pain.

Recently the Mir and Unity Next teams got Unity 8 up and running on Mir. Now, this work is still very early in development and neither Mir nor Unity Next are finished yet, but I reached out to Michael Zanetti, who is on the team, and asked him to put together a short video demo to show the progress of this work. This demo shows the phone/tablet part of the Unity 8 codebase; the final desktop version will come later.

Here is is:

Can’t see the video? Click here!

As you can see, impressive progress is being made; this demo is running on a MacBook Pro Retina utilizing the full resolution of 2880×1800 pixels and using Intel HD 4400 graphics. The performance is already looking great, and the team haven’t done a deep dive into performance optimization yet.

If you are interested in participating in Mir development, click here and if you are interested in participating in Unity 8, click here.

As a pretty simple-minded person, I am a big fan of simplicity. The world is filled with too much complexity and too much detail. Many often feel the detail is necessary for particular outcomes or to solve particular problems. The lesson I have learned as I have gotten older though is that while the skill is in matching the level of detail to the mind of the observer, the real elegance is in delivering the same level of detail but in a way that feels simpler than expected to the observer. This results in delightful experiences.

Ross Gardler recently quoted Einstein who said “everything should be made as simple as possible, but not simpler“. This so beautifully summarizes my view of the world; life should be as simple as we can make it, but we should not compromise in our goals merely to make things simple. In other words, if we can boil our projects, processes, interfaces, and ideas down into simpler parts that still let us be productive, they become more enjoyable to engage with and thus more successful. Of course, making complex things simple is…complex. It is though, worthwhile, and for many (myself included), a fun challenge. I am sure I am not alone.

As we step into our Ubuntu Developer Summit this week I would like to encourage everyone to think about ways in which we can simplify all aspects of how create and deliver Ubuntu to others as a means to further the project and experience. This doesn’t just apply to user interface design though. How do we make our teams easier to navigate and participate in? How do we make it easier to create your first app, charm, bug fix, translation, document, mailing list post, question, answer, or otherwise? If we can make in-roads this week in simplicity, I am confident it will continue the bold stride Ubuntu is making into the future of devices and the cloud.

Just a quick note to remind everyone that our next Ubuntu Developer Summit is taking place this week on Tuesday, Wednesday and Thursday, and is open and available to everyone to participate. This is the event where we get together to discuss, debate, and plan the next three months of work.

The event takes place online from 2pm – 8pm UTC. All sessions will run using a combination of Google+ streaming video hangouts and IRC, and you can see the full schedule on summit.ubuntu.com. Consequently, for those who cannot attend or might miss certain sessions, all sessions will be available pre-recorded from the session pages when the session is complete.

The event kicks off on Tuesday at 2pm with our keynote. We hope to see you there!

Start: 2013-06-08 11:00 End: 2013-06-08 17:00

This month we are at LiNCORE offices (part of the ReigateHub) in Reigate on 9th March. Our thanks go to Jay Bennie for hosting us.

Bring a 'box', bring a notebook/netbook, bring anything that might run Linux, or just bring yourself and enjoy socialising, learning, teaching or simply chilling out!

New members are very welcome. We're not a cliquey bunch, so you won't feel out of place! Usually between 15 and 30 people come along.