> On Oct. 21, 2015, 11:19 a.m., Christoph Feck wrote: > > Thanks Martin for the investigation! > > > > The crash is not specific to the kscreen kcm, but we also got it with other > > kcms that use QML, so the same (or a similiar) fix has to be applied there, > > too. > > Martin Gräßlin wrote: > all right, do you know which other KCMs? I explicitly tested decorations > KCM which doesn't expose the problem. > > Christoph Feck wrote: > From remembering some comments of duplicates, "changing GL version" and > "changing desktop effects" was among them. But it's possible that they > previously also visited the kscreen page, and the crash is indeed only there.
"changing GL version" clearly not: it's good old QWidget based ;-) Going twice to desktop effects does indeed trigger a crash, but a completely different one. - Martin ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://git.reviewboard.kde.org/r/125734/#review87183 ----------------------------------------------------------- On Oct. 21, 2015, 10:37 a.m., Martin Gräßlin wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://git.reviewboard.kde.org/r/125734/ > ----------------------------------------------------------- > > (Updated Oct. 21, 2015, 10:37 a.m.) > > > Review request for Plasma, Kai Uwe Broulik and Daniel Vrátil. > > > Bugs: 344651 > http://bugs.kde.org/show_bug.cgi?id=344651 > > > Repository: kscreen > > > Description > ------- > > When using threaded rendering loop [1] systemsettings crashed when > clicking the back button. This crash is caused inside the shader effect > used by the OpacityMask. > QtQuick informed us also that something is wrong: > "QSGDefaultLayer::bind: ShaderEffectSource: 'recursive' must be set to true > when rendering recursively." > > The actual problem is that orientationPanelContainer and the OpacityMask > are children to the monitor item causing recursion. By making them > siblings to the orientationPanelContainer the problem is resolved. The > error message from QtQuick is no longer shown and systemsettings doesn't > crash any more. > > BUG: 344651 > FIXED-IN: 5.4.3 > > [1] QSG_RENDER_LOOP=threaded systemsettings5 > > > Diffs > ----- > > kcm/qml/Output.qml 7bcaf39174a748a203eab5a420cb57c3639d0024 > > Diff: https://git.reviewboard.kde.org/r/125734/diff/ > > > Testing > ------- > > > Thanks, > > Martin Gräßlin > >
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