KDE SC 4.5.0: Dolphin instable
peter.penz19 at gmail.com
Wed Aug 4 08:04:01 CEST 2010
I'm very sorry for noticing you that late, but my timing to recognize the root
cause of some Dolphin related crashes was very bad this time: Dolphin might be
instable in KDE SC 4.5.0, when tooltips or the information panel are enabled.
Sebastian Trüg and I provided two patches on the 4.5 branch that solve this
issues (SVN commit 1157302 and 1158299 ), but of course it is too late now
If possible, I think this should be mentioned in the release notes as known
issue. A suggestion of the text might be: "Dolphin might be instable in KDE SC
4.5.0, when tooltips or the information panel are enabled. A fix will be
available for KDE SC 4.5.1."
Some background info: Dolphin receives the meta data shown in tooltips or the
information panel in a thread, to assure that the user interface does not get
blocked. Before KDE SC 4.5 it just used Nepomuk to get the data, since 4.5 it
uses KFileMetaInfo as fallback when Nepomuk is disabled. It turned out, that
KFileMetaInfo is not reentrant, which of course is a disaster when being used
in a thread. I initially thought this is related to a d-bus issue
(https://bugs.freedesktop.org/show_bug.cgi?id=17754), but sadly was wrong here
 I still need to go manually through all tooltip and information panel
related bug reports, to set them to resolved. But I did not want to do this in
a hurry, so the patches currently don't contain BUG: tags.
PS: I'm offline today, but should be available again tomorrow.
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