Am 17.11.2010 23:26, schrieb Alan McKinnon: > Apparently, though unproven, at 00:08 on Thursday 18 November 2010, Florian > Philipp did opine thusly: > >> Hi list! >> >> Today, KDE nearly killed a presentation I held and now I want to >> understand what's going on: >> >> Following setup: One laptop, two outputs (internal display + projector). >> >> Now I configure KDE to expand the desktop on both (instead of simple >> cloning). So far, so good. > > For anyone to help at all, we'll need to know your hardware and video > drivers, > plus versions in use of X.org and it's drivers, plus relevant config stuff. > > Everything else is highly configurable and subject to the whim of driver > writers and the user. And there's always nVidia's stance to be taken into > account as well >
Ah, right, forgot about that. Intel GMA HD graphics (i915 driver), x11-base/xorg-server-1.8.2 (USE="udev -hal") and x11-base/xorg-drivers-1.8 No xorg.conf. Tried it with composite effects off and on. KDE is on version 4.4.5 and some packages 4.4.7 (current stable). >> >> First question: How does KDE choose on which output the "standard" >> desktop ends up and which gets the second set of desktop background + >> plasma widgets? It seems like the one with the higher resolution is >> standard and on a draw, it is the right-most. Is that correct? Can it be >> configured? >> >> Now that I have both desktops, I open Acroread or Okular and start the >> fullscreen/presentation mode. What happens is that the presentation is >> deterministically opened on one of the displays. What I don't understand >> is how it chooses which one it uses? >> >> It doesn't depend on the placement of the window (although other >> applications like Flash in Firefox, MPlayer, Kaffeine and Gwenview do). >> It doesn't always open on the secondary or standard desktop (as >> specified above). It rather seems like it always opens on the one with >> the higher resolution and if both are equal, it opens on the left-most. >> >> So, what happened when I tried to hold my presentation? The projector >> had a low resolution (1024x768) and therefore neither Acroread nor >> Okular showed on fullscreen on the projector. None of my previous tests >> showed that problem since I used two displays with equal resolution. >> Great fun! In the end, I cloned the output and thereby gave Okular no >> other choice. (Lucky me that I didn't any additional notes or anything >> on the other display ...) >> >> What can I do to influence this behavior? >> >> Edit: I just noticed that both applications have settings for this. >> However, they are ignored and the setting in Acroread is even reset to >> "Current display" each time I close the settings dialog! What is going >> on here? >> >> Thanks in advance! >> Florian Philipp >
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