using two monitors with XFce4

[Guido Draheim]

Olivier Fourdan wrote:
> Guido,
> 
> 1) Session manager is *not* part of the release

*ooops* a desktop w/o session-manager, kiddin'? No, I understand that
things are not properly aligned from that but I did not do anything
weird AFAIR, there was some setting to enable sm, and so I did. Hmmm.

> 2) Starting the panel on second screen doesn't set explicitely the
> DISPLAY, so I'm not surprised that apps still start on 1st screen
> 3) The warning (warning, not error) message tell that MCS is already
> running on the display. Not surprising, MCS works per display, not per
> screen.
> 4) You can achieve what you want by doing something like (assuming you
> use bash):
> 
>  DISPLAY=:0.0 xfwm4&
>  DISPLAY=:0.0 xfce4-panel&
>  DISPLAY=:0.1 xfwm4&
>  DISPLAY=:0.1 xfce4-panel&

I'll try that in the next hours...

>  
> I however, don't think it's a good idea to start xfce4-panel on both
> screens, as both instances will share the same config file. It would be
> better to start xfwm4 on both screens as shown above and run apps
> setting the DISPLAY to select the desired screen.
> 
> All in all, I still wonder why not using Xinerama, after all. But that's
> another story.

So, you really want the long story, do you? ;-)) the primary head is an
older pci ati with very good output filters for maximum contrast but it
has not enough memory to run 32bit colordepth. The second head is an
agp nvidia with good graphics power where demos and tv/sat and mplayer
are running. For smooth apearance it needs to be 32bit colordepth. In
other words, one head for project work and steering controls, the other
head for preview of work. The bottom line is: 16bit != 32bit => no xinerama

Apart from my specifics, different power on the heads is quite common
among graphics designers that I know, with one special head set aside
used primary for preview of the final work presentation. They just happen
to use mac os usually, so they are not likely to become xfce users. It
just needs mentioning since you seem embarressed about the idea of not
using xinerama. Even if they could, they wouldn't want to. (where I
kinda would like to enable it but can't for the limitations of my setup).

-- guido

> 
> *plop* (for whatever it means)
> Olivier.
> 
> On Sat, 2003-12-06 at 01:33, Guido Draheim wrote:
> 
>>Olivier Fourdan wrote:
>>
>>>On Fri, 2003-11-28 at 09:59, Guido Draheim wrote:
>>>
>>>
>>>>Similar limitations did exist in kde and gnome about two year ago as well
>>>>but their are fixed for quite a time now. 
>>>
>>>
>>>Humm, last time I checked, Kwin from KDE 3.1 required to be started on
>>>all screens. Metacity does manage all screens. 
>>>
>>>
>>>
>>>>In that era I was fixing it
>>>>with running an extra xfwm -display :0.1 to put a wm on the second head.
>>>>That is _not_ possible with xfwm4 AFAICS, it reports "some wm already
>>>>running". That accounts as a bug I'd say but who's going to fix it...
>>>
>>>
>>>Wrong, xfwm4 --display :1.0 works - There is no bug here.
>>>
>>
>>$ xfwm4 --display :0.1
>>** (xfce-mcs-manager:23903): WARNING **: Multi channel MCS manager already detected for screen 0
>>** Message: xfwm4: Anzahl der virtuellen Desktops nicht gesetzt. Benutze default Einstellungen: 4
>>
>>There is nothing on the second screen however. So well, going to start
>>an xfc4-panel --display :0.1 to have something on the secondary head.
>>
>>When clicking anything on the new panel, the window will be opened on
>>the _primary_ head. Ooops. So then, here we go and start a terminal
>>on the seconary head, and in that terminal we start xfc4-panel. After
>>that, new windows run on the secondary panel.
>>
>>After that, I have an equal setup on each head, two terminal windows,
>>one window manager, one xfce panel - atleast that's what it looks
>>like. Now, let's see what the session manager will make of that.
>>
>>after login / logout - there is one terminal on the second head,
>>three terminals on the primary head, two panels on the primary
>>head, upon logout, the xfce desktop freezes hard. killall X.
>>
>>*plop*
>>-- guido                       http://google.de/search?q=guidod
>>GCS/E/S/P C++/++++$ ULHS L++w- N++@ d(+-) s+a- r+@>+++ y++ 5++X-
>>
>>
>>
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-- 
-- guido                                  http://google.de/search?q=guidod
GCS/E/S/P C++/++++$ ULHS L++w- N++@ d(+-) s+a- r+@>+++ y++ 5++X- (geekcode)