A Lighter, Faster (?) Plasma

[Rog131]

Re: A Lighter, Faster (?) Plasma

> UDSProceedings N PackageSelectionAndSystemDefaults:

Kubuntu Packaging

Notes
...

• Thiago says should be fine to turn on Qt raster painting for everything, will be default in 4.8 anyway

...

> Kubuntu Todo:

...
Turn on raster for Qt for an alpha
...

> About Natty-changes
>> kubuntu-default-settings 1:11.04ubuntu1:

kubuntu-default-settings (1:11.04ubuntu1) natty; urgency=low

* Add etc/X11/Xsession.d/80qtgraphicssystem to set default graphics
system for Qt to raster
...

>>> kubuntu-default-settings 1:11.04ubuntu3:

...
[ Jonathan Thomas ]
* Remove etc/X11/Xsession.d/80qtgraphicssystem, as upstream has
reported it to cause "havoc" with the intel drivers

> About kubuntu-devel
>> Qt raster on by default:

Jonathan Riddell
Wed Nov 17 17:40:14 GMT 2010

I uploaded kubuntu-default-settings which sets export
QT_GRAPHICSSYSTEM=raster

Do test it out and see if it causes any problems.

Openoffice won't start unless you set QT_GRAPHICSSYSTEM=native
we'll need to patch it to do that by default

Jonathan

Natty/Qt > Topic: Notty links

[KeithZG]

Re: A Lighter, Faster (?) Plasma

I've yet to try this out on my main setup, the aforementioned Nvidia TwinView bit, since I'm still on 10.04; I'm trying to figure out fixes for various problems in 10.10 on my other systems before I commit my main one to moving off the LTS. However, my circa-2006 used iMac that I use in my room which has a 24" monitor hooked up to it as well, which is CRAZY slow in KDE even with effects entirely disabled (it runs an ATI x1600 mobile), after installing kde-config-qt-graphicssystem and switching to raster things are silky smooth, way smoother than if I (*shudder*) boot into OSX.

I still have to leave desktop effects disabled, since if I don't it tends to be just a matter of time until they bug out and start slowing the entire system down (until being disabled, upon which things speed up again; it takes a session logout to get the effects working again without slowdown, though) and, furthermore, they make it impossible to play HD video. But I wasn't really expecting KDE's desktop effects to work on an old X1600m if they don't even work reliably on my 7800GTX, heh, so it's alright.

[oblivion]

Re: A Lighter, Faster (?) Plasma

Well, shifting from XRender/QT to Raster significantly speeds up KDE desktop , but unfortunately openoffice refuses to work with raster setting on both of my machines (Kubuntu MM) which have only ATI GPU and open-source radeon drivers in common (X1600 pro and an X1950XT).

Regards

[Rog131]

Re: A Lighter, Faster (?) Plasma

Go Native

As said (working here):

Openoffice won't start unless you set QT_GRAPHICSSYSTEM=native...

QT_GRAPHICSSYSTEM=native ooffice
QT_GRAPHICSSYSTEM=native ooffice -writer
...

[img width=400 height=338]http://img684.imageshack.us/img684/3527/nativel.jpg[/img]

[oblivion]

Re: A Lighter, Faster (?) Plasma

Go Native

As said (working here):

Openoffice won't start unless you set QT_GRAPHICSSYSTEM=native...

QT_GRAPHICSSYSTEM=native ooffice
QT_GRAPHICSSYSTEM=native ooffice -writer
...

[img width=400 height=338]http://img684.imageshack.us/img684/3527/nativel.jpg[/img]

Shame on me! I should have read it better.

Thank you very much for the useful instructions Rog131!

Regards.