which of the effects do you want to disable? Coverswitch or boxswitch? You first name coverswitch later on you only talk about boxswitch.

Nevertheless I am unable to reproduce this behaviour. On my system moving back to the general tab does not change anything. You could also try to close the dialog with OK button.

Sorry I meant Box Switch. 

There is no OK button on the dialog! If I simply close the dialog clicking on the X in the top right corner, the Box Switch is still active. Even if I do so reopening the System Setting - Desktop - All effects shows that Box Switch is active. 

I'm tempted to send you a video recording of what is happening. Unfortunately I don't have another installation to try.

Is there a way to change it from a configuration file? 

cheers,

If you wish you can see what is going on my computer looking at this video:

http://www.youtube.com/watch?v=bg1L-o05lx0

thanks

Please try it without using systemsettings. Just open the context menu of the window decoration and choose the settings entry. There you can configure the effects as well as in systemsettings and there is an OK button.

But I also failed to reproduce with using systemsettings.

I can reproduce with latest trunk, occurs both in System Settings and through the window menu. Can't pinpoint the problem though.

damn it - I just switched to the packages provided by the distribution and here I am able to reproduce. Seems I did not yet have a recent enough build for this bug.

Temporary workaround:
- edit the file ~/.kde/share/kwinrc (in some distributions it is .kde4)
- find the section [Plugins]
- change the line "kwin4_effect_boxswitchEnabled=true" to "win4_effect_boxswitchEnabled=false"
- close file
- reload config (easiest way: alt+shift+F12 to disable compositing and again to enable)

While going back to the main settings menu I receive the "unsaved changes" message, clicking Okay then going back into effects I can now disable the box effect no problem.

To Martin

The file to edit on a standard F9 installation is ~/.kde/share/config/kwinrc (you forgot a "config").

To Lucas
Yes it looks like the plugin is not active, or at least is not ticked. But the plugin is active anyway... Try to Alt+Tab...

Anyway, if I reopen the System Setting the tick is still there...

Found the problem:

The "Improved window management" checkbox conflicts with the "All effects" selection. If it's checked it enables a list of predefined effects, effectively making them (sometimes) impossible to disable.

Lucas I think you are right. This used to become a dashed checkbox (three state check box) when you disabled one of the default boxes.

I found the reason: sebas activated another effect (rev 829757). That is the code:
define LOAD_EFFECT_CONFIG(effectname)  effectconfig.readEntry("kwin4_effect_" effectname "Enabled", true)
    int winManagementEnabled = LOAD_EFFECT_CONFIG("presentwindows")
        + LOAD_EFFECT_CONFIG("boxswitch")
        + LOAD_EFFECT_CONFIG("desktopgrid")
        + LOAD_EFFECT_CONFIG("dialogparent")
        + LOAD_EFFECT_CONFIG("trackmouse");
    if (winManagementEnabled > 0 && winManagementEnabled < 4) {
        ui.effectWinManagement->setTristate(true);
        ui.effectWinManagement->setCheckState(Qt::PartiallyChecked);
    }
    else
        ui.effectWinManagement->setChecked(winManagementEnabled);
    ui.effectShadows->setChecked(LOAD_EFFECT_CONFIG("shadow"));
    ui.effectAnimations->setChecked(LOAD_EFFECT_CONFIG("minimizeanimation"));
#undef LOAD_EFFECT_CONFIG

So if we change to < 5 it will hopefully work. Can somebody please test it, I have hardly the time for it

I have already committed the change in revision 833261 however it seems like Bugzilla once again didn't pick it up. Closing manually.

*** Bug 167161 has been marked as a duplicate of this bug. ***

*** Bug 167230 has been marked as a duplicate of this bug. ***