----- Original Message ---- > From: YoYo Siska <y...@gl.ksp.sk> > To: gentoo-user@lists.gentoo.org > Sent: Thu, November 18, 2010 12:41:03 PM > Subject: Re: [gentoo-user] KDE-4 multi-monitor + fullscreen applications > > On Wed, Nov 17, 2010 at 11:41:25PM +0100, Florian Philipp wrote: > > 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? > xrandr 1.3 has a new option to say which output should be 'primary' > > you can try something like > > xrandr --output LVDS1 --mode 1024x768 --pos 0x0 --primary --output VGA1 > --mode 1024x768 --righ-of LVDS1 > > However IIRC kde used to ignore which display was primary (reported as > xinerama screen 0) and somehow decided on its own order... > > Here okular works correclty (well, at least "Current screen" and "Screen > XX" used to work, don't remember for "Default screen" and can't test > right now...), but right now I'm using fluxbox as window manager and not > kwin, but I it would be weird if it actually made things break.. ;) > <snip> You may be interested in this post by Aaron Seigo: http://aseigo.blogspot.com/2010/11/multihead-plasma-desktop-needs-you.html Also, check the KDE System Settings as I mentioned in my first post on this thread. I don't have an Xorg config file, and yet I can do multiple displays through KDE; I also don't configure xRandr. This is all independent of any video card; though, as A. Seigo points out there are some issues still being fixed. Not sure if you're trying to run multi-head or simply multi-screen; though I think multi-screen since you don't have an xorg.conf file too. Please read Aaron's post. Ben
