RANDR 1.2 vs libxinerama?

Matthias Hopf mhopf at suse.de
Tue Apr 17 08:25:05 PDT 2007

On Apr 16, 07 08:16:32 -0300, Keith Packard wrote:
> On Mon, 2007-04-16 at 11:48 +0200, Matthias Hopf wrote:
> > But behavior obviously changed with RandR 1.2, because both KDE and
> > Gnome used libXinerama for multiscreen detection before.
> Not intentionally, except for merge fb mode where RandR 1.2 now
> correctly reports the separate monitors as separate Xinerama 'screens'.

It seems that we had some semantical misunderstandings about the
libXinerama output - it looks like the output is indeed correct, and
sufficient for our needs. I also was under the impression that KDE
already used the output so far, but this was partially manually

So sorry for the fuzz.

> If you've got a case where it's reporting the wrong information, let me
> know and I'll fix it.

We had a server crash once, when I tried to force adding another mode,
but I didn't have time to debug this further.

> > And in that particular case, only a single monitor was connected, so the
> > "screen"s in libXinerama now represent CRTCs and not active CRTCs.
> No, the RandR 1.2 Xinerama should only report active CRTCs; inactive
> ones have size 0x0. What driver is this with?

intel, and it was actually correct in that case :-]



Matthias Hopf <mhopf at suse.de>      __        __   __
Maxfeldstr. 5 / 90409 Nuernberg   (_   | |  (_   |__          mat at mshopf.de
Phone +49-911-74053-715           __)  |_|  __)  |__  R & D   www.mshopf.de

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