Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: qt4-x11 (Ubuntu)
Status: New = Confirmed
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Title:
I allowed myself to set the bug in state NEW again, as we now have
much more evidence here so somebody from the experts might have
interest reviewing the bug again ;-).
I hope this is ok ...
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Adding export QT_GRAPHICSSYSTEM=native has solved the problem for me
on my Ubuntu 12.04 machine.
The Ubuntu team might consider allowing this option to be chosen for all
shells that are remotely called via ssh.
** Changed in: qt4-x11 (Ubuntu)
Status: Incomplete = New
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We updated to 12.04 yesterday and experience the exact same degradation.
Is there any additional information available yet? Changing the QT4
style did not change anything.
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Additionally, we experience another problem running KDE applications.
QDBusConnection: session D-Bus connection created before
QCoreApplication. Application may misbehave. (see
https://bugs.launchpad.net/ubuntu/+source/kde4libs/+bug/959151)
Is it possible that this bug is related?
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You
I found the following issue reported in the kdevelop tracker (see
https://bugs.kde.org/show_bug.cgi?id=293587)
Adding the argument --graphicssystem native resolves the issue for me
and the person who submitted the issue to kdevelop. You may get lucky as
well!
** Bug watch added: KDE Bug Tracking
I can confirm this it really speeds up things again!
Further more there is an environment variable that you can set to
override the graphicssytem's default setting (see
https://bugs.kde.org/show_bug.cgi?id=248672#c2), although it states that
you should use it at own risk, so it might break stuff.
Some additional info:
I found the following package: kde-config-qt-graphicssystem
and tried to configure the setting using it by running kcmshell4
qt-graphicssystem
It only provides three options. None of which are native. It did *not*
work! On the other hand, setting the env. variable as
We have performed the actions you proposed:
1) running qtconfig shows that we do not have oxygen as an option
2) choosing GTK+ as an option did not show any performance improvement
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Hi Harald,
how can I find out about which qt widget style is used in oxygen?
Best regards,
Stefan.
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Title:
qt4 applications over X forward run
ah sorry: i mean: which widget style is used in kdbg? is there a qt
debug switch to see the style currently in use?
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Title:
qt4 applications
I have just installed an 12.10 64bit installation.
Same picture, running kdbg via ssh x forward is significantly slower
than with a 10.04 32 or 64 bit installation. I tested agains a (new) 32
bit installation of 10.04 on a Pentium 4 old PC, which still performs
significantly better than 12.04 and
... to report a bug
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Title:
qt4 applications over X forward run slower than with Ubuntu 10.04 LTS
To manage notifications about this bug go to:
Install qt4-qtconfig, run qtconfig:
In the very first dropdown for 'GUI Style' select oxygen if that option is
available. If the preview looks stylewise like the qtconfig window itself you
are using oxygen. To make perfectly sure you can select oxygen, close the
qtconfig window and start it
Using oxygen as widget style?
** Changed in: qt4-x11 (Ubuntu)
Status: New = Incomplete
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Title:
qt4 applications over X forward run
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