Little dual screen prob under KDE

xull · n00b Joined: 12 Mar 2004 Posts: 4 Location: France

Hi there,

I've got a little problem with Xinerama under KDE 3.2. I'm using a Gentoo 2004.0 with 2.4 based kernel. I setup Xinerama in my XF86Config and it works well (I mean, the desktop is stretch on my two screens, no problem, no error in the log). But the Display panels of KDE 3.2 are grayed (telling my system doesn't seem to be multiheaded) and I've no Xinerama specific options if the Windows Behavior panel.

I have an AGP Radeon and a PCI nVidia TNT. I only don't know why X works well but KDE seems unable to see that Xinerama is enabled. Any idea here ? :roll:

Thanks a lot in advance !

sethleon · Guru Joined: 14 Dec 2003 Posts: 398 Location: Germany

did you enable all options in:
> Control Center > Devices (1st point) > Display
in the 3rd tab (rider) ?
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xull · n00b Joined: 12 Mar 2004 Posts: 4 Location: France

Thanks for your answer but I don't have those options, they don't appear

But I think I found a solution on the KDE forums. It seems to be a problem with QT which should be compiled with the xinerama flag. KDE seems to check if the xinerama extension of QT is enabled to know if it should enable its own xinerama options.

So I will try to re-emerge QT using "xinerama" in the USE variable when I come back from work. I will tell you the results.

sethleon · Guru Joined: 14 Dec 2003 Posts: 398 Location: Germany

better also do:

Martz · n00b Joined: 04 Mar 2004 Posts: 72

I found that to un-grey the mutliple displays option in display properties, i had to duplicate my monitor entries in XFree86config. I have 2 x the same TFT montior, so I didn't see any point in duplicating them initially.

Once I had done this and restarted KDE I could access the multiple display properties page (your not missing much though to be honest!)

sethleon · Guru Joined: 14 Dec 2003 Posts: 398 Location: Germany

but without the options you will miss something :wink:

if you enlarge any window to full size it is enlarged over both screens :wink:

and some more options, it's worth getting it working

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sethleon · Guru Joined: 14 Dec 2003 Posts: 398 Location: Germany

so, to summarize this, here is my (working) XF86Config,
you will see the "double-monitor" settings,
and after having re-emerged qt and libsdl with xinerama flag enabled,
you gain access to the control center's special tab (multiple monitors),

so here it is:

xull · n00b Joined: 12 Mar 2004 Posts: 4 Location: France

Thanks a lot guys. I'm gonna try this in a few hours. I hope that's gonna work

Thanks again.

sethleon · Guru Joined: 14 Dec 2003 Posts: 398 Location: Germany

No problem. :wink:

It's a pleasure to help, and solve problems.

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xull · n00b Joined: 12 Mar 2004 Posts: 4 Location: France

sethleon · Guru Joined: 14 Dec 2003 Posts: 398 Location: Germany

Good to hear that.

Maybe I will write a tutorial for all other people
who has the same setup problem.

Have fun with your that cool feature. :wink:

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EnigmaedgE · Tux's lil' helper Joined: 20 Mar 2003 Posts: 89

Hey guys....

Not to hijack your thread....but I've dying over here! I've tried everyone's example, but i cant seem to get dual monitors to work. Check out my config and error here:

https://forums.gentoo.org/viewtopic.php?p=1018583#1018583

Thanks guys

BennyP · Posted: Wed Jun 23, 2004 10:46 am Post subject:

I"m using Xorg and xinerama, with fluxbox, x starts and i see the voodoo5 bios start (screen0), but not the ati bios (screen1) and i get x on the big display, not screen1
here's config

sethleon · Guru Joined: 14 Dec 2003 Posts: 398 Location: Germany

Please post us your XFree-log file as well (to be found in /var/log),
just reviewing your config file did not help me so far,
because I don't know how it works with you hardware.
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BennyP · Posted: Tue Jun 29, 2004 5:13 pm Post subject:

sethleon · Guru Joined: 14 Dec 2003 Posts: 398 Location: Germany

xfreelog seems to have no heavy errors,
looking in your xfree config let me notice that you use two diffrent
grafic cards, is that correct ?

The configuration I used was optimized to one grafic card
with 2 possible plugs (for two monitors), I used this config file
to enable the two monitors for my notebook,
the standard LCD and a CRT monitor (or CRT like devices).

now to you again, are you trying to use two grafic cards,
which should display on two monitors using the same xfree ?
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BennyP · Posted: Wed Jun 30, 2004 10:40 pm Post subject:

yes I am using 2 cards. Screen0 uses a Voodoo 5 AGP, Screen1 uses an ATI mach64 PCI
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Could it be?

btg308 · Posted: Mon Jul 19, 2004 11:13 am Post subject:

Try adding a BusID to the second card as well:

hds · Posted: Sun Aug 22, 2004 8:04 am Post subject:

hi,
just a question related (adding?) to this topic.
i am just going to setup xinerama as well:
card1: gforce2 agp
card2: voodoo3 pci

on card2 i like to run mplayer watching TV, wich is streamed from a sat receiver.

now, *additionally* i would like to insert a SB 128 PCI soundcard. so i have sound on monitor/desk1 using the onboard ViasSound, and monitor/desk2 will use the sb128

is this possible? anything i would have to take care of?