I have two Plasma5 installations, both in the -current. One's in a small computer which has more a role of (family) playground, and it does not bother me so much.

Second Plasma5 installation is on a computer where I do some light work. And in my vision and needs, "light work" is about having a Kate with around 2000 files opened and hundred pages opened in Firefox and Chromium. OK, also a complete LAMP stack running in background.

And in this particular computer, the KWin insists to believe that it crashes after a reboot/shutdown, disabling the desktop effects. Not that I bother so much about them, but disabling the compositor make the web-browsers to behave really ugly.

Sure thing, there is no raging powerful video-card, but an on-board Radeon HD3200 (which do fine its job for what I need), BUT also I am pretty sure that KWin does not crash, and instead it is somehow confused by longer load times of the desktop. Because if I re-enable the desktop effects and I do logout and login again, it will work fine. Also I tested adding a dedicated video-card like Radeon HD6450, with the same behavior.

Did you guys know a way to tell to KWIN that it should trust its owner and to stay with desktop effects on?

Poor soul, also you tried to configure the Plasma5?

No, but instead try compiz from this repo then run:After that, to start the CompizConfig Setting Manager and get all the bells and whistles you deserve, type:The default key bindings (aka keyboard shortcuts) as configured are there.

The package is for Slackware version 14.2 and derivatives, if need be get the source here to rebuild it.

2 members found this post helpful.

Unfortunatelly I have no idea and looks like the entire Internet is bussy to find ways to disable these desktop effects from Kwin, instead of forcing them on.

But I am able to bring up an explanation about what's wrong and to propose a strategy to avoid this issue.

As a background, I have a computer which have a RS780V/SB700 chipset and an Athlon x2 7850. My video is a Radeon HD 3100, which is like yours Radeon HD 3200 given by RS780G, but without hardware video decoding and encoding. And I am also fan of opening tons of pages in web browsers.

But I do not seen this issue of Kwin, at last in the latest Plasma5 released by Eric Hameleers. In my computer Kwin works well and it does not disable often its effects. That made me to think and focus on Kate. I set it to reopen the last session then I opened over 1000 files from the kernel source and I rebooted the computer.

So I observed that Kwin started to missbehave but for my surprise the Kate started to work much better over its over 1000 files opened for editing. Then I can understand why you insist to open all your files in a single session on Kate.

From my experiments, it is clear that Kwin does not like what Kate do, opening its tons of files, and missinterpret the computer behaviour as a 3D issue.

My strategy to avoid this issue is very simple: to manually quit the Kate before shutdown, then after the desktop is back and full loaded, to launch it manually.

I tested this strategy several times, and works with no miss.

However, if you decide to switch to another compositor, wanting just to keep your web browsers tearing free as you suggest, I would like to raise your attention also to Compton

https://github.com/chjj/compton

https://slackbuilds.org/repository/1...sktop/compton/

It is not as complete as the Compiz suggested by Didier Spaier, but Compton offer the bassis of tearing free and even window shadows. I use it with with XFCE from long time and I am very satisfied how it works.

1 members found this post helpful.

@Didier Spaier, thanks for suggestion. A fine and well tested build of Compiz is always handily. But I hope to use it as last measure, because I do not intend to replace the compositor from Plasma5, but somehow to find a way to instruct the KWin that the desktop loading happens slower than it imagine.

@ZhaoLin1457, thanks for your efforts and KWin behavior confirmation.

And yeah, I am aware about the bad interaction between Kate and KWin.

Also, I know about Compton (is the thingie used by LXDE for composition, if I remember right)

Still I hope to find something in the KWin configuration for longer desktop loads, like I said.