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List:       kwin
Subject:    Re: compositingActive not efficient on XRandR events
From:       Martin =?ISO-8859-1?Q?Gr=E4=DFlin?= <mgraesslin () kde ! org>
Date:       2011-07-16 13:36:19
Message-ID: 1729571.ZOvkYrNuKV () martin-desktop
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On Saturday 16 July 2011 15:24:56 Alex Fiestas wrote:
> Hi there
> 
> One of the issues I have when I setup my XRandR config is that plasma 
> fails to set the composite theme (the good looking with ARGB one).
> 
> After thinking about it a little bit, and knowing how KWin and Plasma 
> are handling XRandR events I think I know where the bug is.
> 
> When adding a new screen XRandR produces 3 events: move, resize, 
> screenAdded. For each of these events KWin will restart the composite.
> At the same time, Plasma listens ot each of these events and do its part 
> of the job (resizing panels etc), and I guess that is in these events 
> where plasma updates the Theme (and ask if composite is on). This will 
> eventually fail since KWin can be in the mdidle of restarting the 
> composite, so Plasma will sue the not-compositing theme instead.
> 
> After checking how KWindowSystem::compositingActive works on X11 I'm out 
> of ideas of how to fix this issue correctly, so maybe we've to add a 
> workaround in Plasma or maybe something else between KWin and Plasma.
> 
> Any ideas?
The bug is much simpler - Plasma just simply fails to recognize that a compositing manager is 
active. I can see this each time I restart kwin (which is considerable often). In order to get 
translucent panels back, I have to kquitapp plasma-desktop, plasma-desktop.

If anyone knows where to look at in Plasma code, I would try to fix it as it deeply annoys me.

Cheers
Martin
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