Am Freitag, 15. März 2019, 12:39:55 CET schrieb Christian Hilberg:
> Hi,
>
> Am Freitag, 15. März 2019, 12:02:42 CET schrieb Andy G Wood:
> > Hello,
> >
> > I have also been suffering from infrequent kmail crashes in recent weeks.
> > It is not related to filtering, nor is it specific to nouveau (I use the
> > NVIDIA proprietary display driver).
>
> I'm seeing the issue with both, nouveau and (legacy 390) nvidia blob.
> Currently running Kontact inside a VM instead, let's see what that does.
(1) KMail in a Buster VirtualBox VM did not show the issue
(2) Using nouveau, it showed that the crash path led through Qt WebEngine,
but ended in the nouveau DRI lib, which is a known issue [0], [1].
Got there through the bug I filed on bugs.kde.org [2].
(3) Using NVidia 390xx legacy blob with vblank_mode=0 __GL_SYNC_TO_VBLANK=0
relaxed the situation for me, the error does not seem to occur
(at least after a few hours there's no crash yet)
(4) disabling vblank did _not_ resolve the issue when using the nouveau
driver
(5) I've seen reports where building Qt against OpenGL ES instead of GLX
resolved the issue (but made e.g. WebGL not working)
Just 2 cents.
[0] https://bugreports.qt.io/browse/QTBUG-41242
[1] https://bugreports.qt.io/browse/QTBUG-49243
[2] https://bugs.kde.org/show_bug.cgi?id=405491
> > Not currently reproducible ... and yes I need to install debug syms in
> > order to provide more than a "me too". The impact may be wider than
> > kmail because I have also had one okular crash too.
>
> Regarding wider impact, the traces I've seen so far point towards
> QtWebEngine, so any app integrating this might be affected.
>
> > Andy.
> >
> > On Friday, 15 March 2019 09:55:10 GMT Christian Hilberg wrote:
> > > Hi there,
> > >
> > > Am Donnerstag, 7. Februar 2019, 13:20:00 CET schrieb Martin Steigerwald:
> > > > Sandro Knauß - 07.02.19, 00:33:
> > > > > Hey,
> > > > >
> > > > > as Debian is already in freeze, the version of KDEPIM that will
> > > > > shipped with the next stable is 18.08.3. That was uploaded same days
> > > > > ago. There is no time to package 18.12.X sorry for that.
> > > > > So please test this version in more depth and report issues. If you
> > > > > also manage to point to existing bugfixes like done in #921535 it is
> > > > > very likely we can ship a that bugfix also for Buster.
> > > >
> > > > The other issue I have since 18.08 packages is:
> > > >
> > > > Debian #921624: kmail: Crash during/after filtering inbox, probably
> > > > related to Qt WebEngine integration
> > > > https://bugs.debian.org/921624
> > > >
> > > > Crash during/after filtering inbox, probably related to Qt WebEngine
> > > > integration
> > > > https://bugs.kde.org/404052
> > >
> > > Filed another one (since 18.08):
> > >
> > > KMail (in Kontact) crashing upon start or shortly after
> > > https://bugs.kde.org/405491
> > >
> > > It might be related (or even duplicate) to #404052,
> > > only that I do not need to have mails filtered for
> > > KMail to crash. Looks like a QtWebEngine thing.
> > >
> > > Just like Martin, I missed out on debug syms. Got them
> > > installed now and trying to get another backtrace.
> > >
> > > > I can add more backtraces to the upstream bug report. For some reason
> > > > DrKonqi shortened the second backtrace I had it generate after fully
> > > > upgrading to 18.08.3-1.
> > > >
> > > > At least this one produces a crash, instead of just stalling… for
> > > > whatever reason.
> > > >
> > > > Thanks,
(Bye)²,
Christian
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