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List:       kde-bugs-dist
Subject:    [Bug 177495] Fullscreen windows unusable due to heavy flickering
From:       Ivo Anjo <knuckles () gmail ! com>
Date:       2011-01-14 20:43:49
Message-ID: 20110114204349.5BB527AFD0 () immanuel ! kde ! org
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https://bugs.kde.org/show_bug.cgi?id=177495





--- Comment #91 from Ivo Anjo <knuckles gmail com>  2011-01-14 21:43:47 ---
(In reply to comment #90)
> On Friday 14 January 2011 20:57:08 Ivo Anjo wrote:
> > Today I was happily using my Maemo device (heh just wanted to brag), and it
> > hit me -- you say that the Maemo compositor does this, and yet I've never
> > noticed any kind of flickering.
> I noticed it on the first day and the flickering there is pretty bad (long 
> delay till the window is visible again). The difference is that they don't 
> have windows opening on top of the fullscreen window (e.g. no menus, no 
> notifications).

They do have notifications (when you get a new e-mail or sms), and pure gtk
applications (normally in the extras-devel repository) do have menus. I've only
really noticed problems with quake3 and some other very heavy, not really
finished ports.

I just remembered: it is noticeable when some games get redirected because
their framerate drops (normally to show "low battery" notifications), but I
don't remember ever seeing flickering there to transfer between modes.

> > If this is the case, wouldn't the same approach taken by Maemo work for
> > kwin? 
> If you can find out what they do differently ;-)

Heh, I don't really grok opengl at all. Might be a nice opportunity to start :)

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