my blog

Tuesday 27 November 2012

JDLL and Mini-DebConf Paris 2012

During the last two week-ends, I went to two different events. That's part of my end-of-year sprint where I travel too much: SUSEcon and openSUSE Summit in September, OpenStack Summit and openSUSE Conference in October (oops, didn't find time to write about these events), two weeks vacation in Thailand in October/November (yes, we enjoyed the time there!), one week of team meeting in Prague right now, and two other trips to Paris during those few months... Crazy planning!

I attended these events with my advocate hat to deliver GNOME-related talks (and also to chat with people a bit about openSUSE, and of course to meet good friends of mine ;-)). I feel there's a big need on GNOME's side to communicate more and clarify our direction and opinions, and on top of that, there's a lot of mis-informed statements around that people blindly trust and that need to be debunked. My talks were simply part of my local contribution towards that goal. And apparently, that's something that seems to be most welcome!

JDLL 2012

The Journées du Logiciel Libre (or JDLL) is an event that occurs every year in Lyon. Lyon being close to home, it's an event I can attend quite easily and this is not something I can complain about ;-) We did have some great people at the event this year, including a french-turned-british-turned-french-again guy.

When I got asked to give a talk about GNOME this year, I wasn't sure I would have anything really interesting to tell, so I suggested an interactive session around the recent hot topics in GNOME (you know, GNOME OS, systemd, fallback mode, etc.). In the end, even though I had many slides ready, we simply discussed the questions that were raised by the audience, and I believe that this session proved to be very useful for the attendees. So a good experience, and a format I'll likely use again.

I also had the opportunity to play a bit with Firefox OS. I've been following the project for quite some time but never took time to really try it, so I was really glad to be able to take a long look at it. There's still some work to do, and, hrm, well, that was visible ;-) I managed to crash things without even trying to be nasty. I hope it will take off, though: there's a need for an alternative closer to our ideals.

Mini-DebConf Paris 2012

The Debian France team organized a Mini-DebConf in Paris, and I was invited for a slot. I chose to talk about GNOME vs downstreams, and discuss the love/hate relationship we have, and how the future direction can be good/bad for different downstreams. The idea was simply to get out some information out about what GNOME is doing, and to clarify where the project is heading, as this has some pretty big impact on our downstream friends. Obviously not everything is perfect in GNOME but I feel that the project is, overall, doing okay as an upstream. (I'm kind of sad to discover an ABI breakage in glib after I told to Stefano and Lucas that we were not breaking ABI in our platform; oh well).

This Mini-DebConf was a pleasant surprise, as there were quite a number of attendees, and the whole event went quite smoothly (well, at least for the day I was there). It was also interesting to hear about the different opinions with regards to the Debian release cycle (got some pretty good food for thoughts), and I enjoyed Sylvestre's talk about making Debian compiler agnostic. The event had many other great talks — definitely an event I'd recommend attending, even to non-Debian people.

Wednesday 21 November 2012

No fallback mode in GNOME 3.8, future of gnome-panel

No fallback mode in GNOME 3.8

As announced by the release team two weeks ago, the fallback mode will be gone in GNOME 3.8. The decision was taken after some discussion on the mailing list back in June and in October, as well as some discussion during Boston Summit 2012. We also have a wiki page detailing the discussion arguments.

In my opinion, the biggest issue we had with the fallback mode is that, with only a few cycles, it quickly became clearly not tested enough, and lacked manpower for proper evolution along with other GNOME 3 changes. This resulted in a much lower quality than what we expect from GNOME. Moreover, several applications actually started requiring Clutter, and therefore didn't work anymore in a real fallback manner (ie, where you have no proper 3D acceleration); this means the fallback mode, when really used as a fallback, was not offering a fully usable desktop, and would be considered more like an alternative shell than a fallback mode.

Where does this leave us?, you might ask.

Well, for a start, GNOME 3.x had several iterative cycles to bring tons of improvements. Many users who were using the fallback mode because they didn't like the GNOME Shell experience are now happy with 3.6. But we're going an extra step starting with the next version: there is an explicit goal of having the project provide a set of extensions to help even more people preferring the fallback mode experience. The tentative list of what the extensions would provide is classic alt-tab, task bar, minimize/maximize buttons, and a main menu. This effort is being publicly tracked, so everyone can participate: if you're interested in contributing to these extensions, don't hesitate, I have no doubt help will be welcomed! Update: this topic is being discussed on desktop-devel-list right now!

There will also be work on improving GNOME 3 when running with software rendering. Of course, llvmpipe was a good start, and llvmpipe itself is getting better and better. But in addition, there are plans to offer a reduced resources mode, with fewer animations, that would be used in different circumstances, including when using software rendering. This should really improve the performances under llvmpipe.

There might be cases where these improvements will not be good enough in 3.8 (or with the Mesa and llvmpipe versions available at that time), resulting in a GNOME version that people might not consider acceptable in terms of performance or hardware support. Things will improve with time, obviously, and 3.10 will solve more and more issues; hence I would recommend to people hitting such issues to stay with 3.6 for a few more months.

All in all, the community is working on having future versions of GNOME, starting with GNOME 3.8, offer an improved alternative to the fallback mode.

Future of gnome-panel (and other fallback components)

Of course, this raises the question of what happens to the components of the fallback mode: gnome-applets, gnome-panel, gnome-screensaver, metacity, notification-daemon, polkit-gnome, etc. These components don't necessarily have to go away: they're just not part of what the GNOME project officially releases, and people are welcome to keep working on them. It's really up to each maintainer.

As for myself, I do not intend to keep maintaining gnome-panel after 3.6.x. I did a 3.6.2 release a few days ago, and it might well be what I consider my final release. If there's a strong push for some patches, there could be a 3.6.3 tarball... So, if you want to keep gnome-panel alive, contact me and you can become maintainer. As long as I either know you, or I can see that you have some minimal coding abilities, you'll get the maintainer hat for free :-)

Now, I believe a group of people could well adopt all the fallback components and keep building a great desktop, on top of other GNOME 3 bricks. They wouldn't even have to restrict themselves to what the GNOME 3 vision is (which is something that blocked some people from seriously contributing to gnome-panel). I don't think it'd be actually too much work: the code is already there! Of course, there would be some compatibility bits removed from other GNOME modules that would need to be moved elsewhere, but in most cases, it's really just about moving the code, not re-implementing things.

To be honest, I would really have loved if the MATE people had taken such an approach (maybe it's not too late?). I think it's a more reasonable effort than effectively forking all of GNOME 2, including obsolete technologies, as the amount of work is much more reasonable.

I'm eager to see if a group will step up to keep alive this old code, which represents thousands of hours from many of us! I wouldn't use it, but it would still make me happy :-)

by Vincent