not possible to start two X servers, only the one launched later works

[Stefan Dirsch]

On Sun, Jun 04, 2006 at 12:32:35AM +0800, Zhang Weiwu wrote:
> On Sat, 3 Jun 2006, Stefan Dirsch wrote:
> 
> > On Sat, Jun 03, 2006 at 10:56:24PM +0800, Zhang Weiwu wrote:
> > > Hello. I just posted question about the problem of dual-head cannot
> > > initialize the second card. I just managed to make both video card work with
> > > two PCI slots (the bug Stefan mensioned also state it is problemaic to work
> > > with dual-head with one of the video card is on-board card).
> > >
> > > Currently both video card can work the same time with one single X server in
> > > xinerama style, I can move cursor from this screen to the other one just
> > > fine. My original purpose is to run one X server per card so that I can make
> > > 'multi-seat' host.
> > >
> > > I have two sets of keyboard/monitor/mouse attached. starting any of them
> > > works fine
> > > X -layout seat0 => result, the first set of keyboard/monitor/mouse works
> > > X -layout seat1 => result, the first set of keyboard/monitor/mouse works
> > >
> > > (seat0 is configured to work with a Voodoo Banshee card on the 2nd PCI slot)
> > > (seat1 is configured to work with a SiS 300 card on the 1st PCI slot)
> > >
> > > However, they don't work together. Examples: (KMV = Keyboard/Mouse/Video):
> > >
> > > ========== Start seat0 first ===========
> > > X :0 -layout seat0 => result, the first KMV works
> > > X :1 -layout seat1 => result, the second KMV works, the first KMV shows a
> > > text cursor (an underline) on the upper-left corner of screen and hang
> > > there, the process 'X :0' doesn't quit.
> > >
> > > ========== Start seat1 first ===========
> > > X :0 -layout seat1 => result, the second KMV works
> > > X :1 -layout seat0 => result, the first KMV works, the second KMV shows a
> > > irregular white band on the middle of the screen, taking up 1/3 of the
> > > screen heigh and fill the width, and keep flashing
> > >
> > > So, is this a novell bug too? (that way I go report it) This time I was
> > > using SuSE 10.0 and Xorg 6.8.2. I am happy to do an upgrade if that can
> > > solve the problem.
> >
> > I don't think so. I never tried any multiseat setup, but IIRC you need
> > at least the "-sharevts" Xserver option.
> >
> > Best regards,
> > Stefan
> 
> Thank you for your help again. I forgot to mension I tried -sharevts but I
> removed it because -sharevts creates this error:
> 
> Fatal server error:
> Unrecognized option: -sharevts

"X -sharevts" works for me on SUSE 10.1.

> This error happen on both SuSE 10.0 and SuSE 10.1. I also think perhaps
> -noswitchvts is important but that creates the same error too:
> 
> Fatal server error:
> Unrecognized option: -noswitchvts

Wrong option. Should be "-novtswitch".

> As you menstioned it I think perhaps this is a SuSE specific problem, thus I
> tried to use -sharevts on Ubuntu and this parameter IS RECOGNIZED. So, if
> only the SuSE xorg have this problem, do we have a replacement xorg RPM
> package?

No. I don't think we need one.

Best regards,
Stefan

Public Key available
------------------------------------------------------
Stefan Dirsch (Res. & Dev.)   SUSE LINUX Products GmbH
Tel: 0911-740 53 0            Maxfeldstraße 5
FAX: 0911-740 53 479          D-90409 Nürnberg
http://www.suse.de            Germany 
------------------------------------------------------