[Bug 1055967] Re: ubiquity kde frontend is broken in current kubuntu daily builds
cjwatson at canonical.com
Tue Sep 25 22:35:48 UTC 2012
Jonathan has committed a fix to trunk, and I've backported it to our
** Changed in: ubiquity (Ubuntu Quantal)
Assignee: (unassigned) => Jonathan Riddell (jr)
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ubiquity kde frontend is broken in current kubuntu daily builds
Status in “ubiquity” package in Ubuntu:
Status in “ubiquity” source package in Precise:
Status in “ubiquity” source package in Quantal:
How to repeat:
1) Get e.g., http://cdimage.ubuntu.com/kubuntu/precise/daily-
2) Try to boot it in a VM (qemu/KVM or virtualbox should do fine)
3) Experience the crash
Please don't ask stacktrace etc since I can't get any (it refuses to load any debug information,
--pdb doesn't seem to work either).
A little debugging with --debug shows:
kubuntu-ubiquity(3341)/kdeui (kdelibs): Session bus not found
12.04.1 livecd works fine. The major change between that version and now was KDE
4.8.4 -> 4.8.5 and a small update in dbus-x11 (but my hunch is that the first is the culprit).
I think the problem is that KDE added a new way to (try to) access the session bus
under the hood, at a time when ubiquity doesn't expect and so is running as root,
causing the problem.
strace shows many -EAGAINs in what seems to be D-bus communication before
the crash, which seems to support this.
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