Archiv für Oktober 2011

Apport: debug symbol retrieval now in GUI

On a rather calm ten-hour flight to Orlando I once again did some pygobject, udisks, and Apport hacking (It’s scary how productive one can be when not constantly being interrupted by IRC, email, etc). One more visible change amongst these was finally fixing a five year old five-digit bug to integrate apport-retrace into the GUI, now that it does not potentially wreck your installation any more.

If the apport-retrace package is installed, the crash detail dialog will show a new “Examine locally” button:

Apport crash detail dialog

After clicking this, you can choose what do do exactly:

Retrace action dialog

I know this dialog is not a beauty, as it’s implemented using the ui_question_choice() API which is used by package hooks. That makes it work for all available UIs (GTK, KDE, CLI), though, and can easily be extended to have more actions. And if you get this far and want to stack traces, you are used to looking at eye-bleeding gibberish anyway..

Presumably the most useful (and default) action is to download all the debug symbols, open a Terminal, and put you into a GDB session with all these, and the core dump loaded, so that you can poke around the crashed program state with all symbols available.

But you can also run gdb without downloading debug symbols, or just update the .crash report file with a fully symbolic stack trace.

This works just as well in apport-cli, but not yet in the KDE version: Someone needs to implement the equivalent of the apport-gtk implementation to apport-kde and kde/bugreport.ui, i. e. show an “Examine locally” button if self.can_examine_locally() is true, and add an appropriate ui_run_terminal() method (which should be fairly similar to the GTK one, just with Qt/KDEish terminal emulators). But as Kubuntu does not currently use Apport (and also because I didn’t have all the dependencies installed on my laptop) I did not yet do this. Please catch me on IRC/mail/merge proposal if you want to work on this. If you look at above commit, the changes to the GtkBuilder file look huge, but that’s only because I haven’t touched it for ages and the current Glade shuffled the elements quite a bit; it just adds the button to the dialog.

For now this is all sitting in trunk, I’ll do a new upstream release and Ubuntu precise upload soon.

Happy debugging!

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Happy Birthday Ubuntu!

7 years ago, The Ubuntu 4.10 “The Warty Warthog” was announced. A huge congrats to the community, Canonical, and especially Mark for getting so far from “there” to “here”.

This brings back old memories of my first conference in Oxford in August, the great-great-grandfather to what is UDS these days. Back then, there was no company, no Launchpad, no Blueprints, no work items, no detailled plans, just a bunch of ideas, BoFs, and this was a third of the entire crowd:

Warty Hack Room

Back then we worked on the famous TRLS technology (“Totally Rad Laptop Support”) and were proud when we got the ThinkPads to suspend once. During that conference I wrote pmount to provide automatic mounting of USB sticks in a safe manner. Those were the days… :-)

But I can also safely say that there are some things that haven’t changed. Even though both the community and the company (which changed away from recently) grew by two magnitudes since then, we still have the same serious attitude, stern look, and formal attire as we had back then:

We are professionals, really!

We are professionals, really!

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Gestatten, Elite

Ich habe gerade Gestatten, Elite zu Ende gelesen (ging schnell, hab erst gestern angefangen). War im Grunde genommen nichts wirklich Neues, was man nicht irgendwie schon gewusst oder geahnt hätte. Aber die gut recherchierte und bewiesene Vehemenz, mit der sich die Oberschicht abschottet und sich selbst als eine Art neuer Adel erhält und das vielbeschworene Leistungsprinzip untergräbt war dann doch schon recht schockierend für mich.

Eine der “Elite”-Schulen die dort unter die Lupe genommen wird — Schloss Neubeuern — haben wir auf unserer Sommerradtour gesehen. Ich war schon beeindruckt von dem Haus, und damals habe ich auch gedacht “Mensch, auf so einer Schule hätte ich mich vielleicht wohlgefühlt”. Aber nach dieser Lektüre bin ich heilfroh dass es mich da nicht hinverschlagen hat.

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