Problematic default settings for KWin

[Martin Gräßlin]

Hi Kubuntu-devs,

please note: I'm not subscribed, please CC me in replies

I have been made aware of the fact that Kubuntu shipps default settings for 
KWin which introduce issues.

I had a look at the kwinrc in bazaar [1] as of revision 505 and I can confirm 
the issue.

In the Plugin section both BoxSwitch and CoverSwitch are enabled. The 
BoxSwitch effect has already been replaced in 4.8 by a QML TabBox, but is 
still shipped as part of it is optionally used by CoverSwitch.

The fact that Kubuntu enables the effect in kwinrc breaks the kwin config 
migration script. Basically the behavior is undefined. I have no idea what the 
users get when the script is executed but it is not what they should get. I 
would suggest to remove the line:

kwin4_effect_boxswitchEnabled=true

Furthermore there are multiple settings which are identical to KWin's default. 
I would suggest to remove those as that can cause issues in the future.

The following config values match KWin's default:
* Style -> PluginLib
* Windows -> TitlebarDoubleClickCommand
* Effect-CoverSwitch -> TabBoxAlternative

Furthermore the following combination of default settings does not make any 
sense:
enabling the cube effect and only 2 desktops.

I also want to point out that upstreams default is since 4.7 to have only one 
desktop. KDE used to have a default of four desktops and Kubuntu decided that 
four are too many and changed to two. With the changed value in KDE this 
should be re-evaluated. Either Kubuntu wants to follow upstream (this is what 
I would suggest) or goes really with virtual desktops and in that case it 
should be changed to 4. Then also the cube effect makes sense.

Please note that removing the virtual desktops by default unclutters the 
default setup as the pager is removed.

Best Regards
Martin Gräßlin

KWin maintainer

[1] http://bazaar.launchpad.net/~kubuntu-packagers/kubuntu-default-
settings/kubuntu-default-settings/view/head:/share/config/kwinrc
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