Link to home
Start Free TrialLog in
Avatar of mcardiff
mcardiff

asked on

Dual monitors in Linux

I have just purchased SuSE 6.3, and need to know if I would be able to use dual video cards and monitors. I don't see anything mentioned in the manuel.Thanks
Avatar of jammann
jammann

Currently, I guess you're out of luck. XFree 86 3.3.x (which is the current basic for all Linux distributions does not offer true multihead support. Excerpt from the XF86 FAQ (www.xfree86.org)

Q.A15- Can I use more than one video card in the same machine with XFree86?

Although it is technically possible to use multiple PCI-based SVGA cards in the same machine, none of the servers currently support this.

The VGA16 and Mono servers are both capable of running both a VGA compatible card and a non-VGA compatible monochrome card in the same machine.

For XFree86-4.0 we are working on true multi head support.

The last line gives you some hope, since 4.0 is already in its pre-release stage. The Release-Note for the current snapshot says:

3.5  Multi-head

Some multi-head configurations are supported in this release, primarily with
multiple PCI/AGP cards.  However, this is an area that is still being worked
on, and we expect that the range of configurations for which it works well
will increase in future snapshots.  A configuration that is known to work
well in most cases is multiple (supported) Matrox cards.

One of the main problems is with drivers not sufficiently initialising cards that were not initialised at boot time. Normally only the primary video card gets initialised at boot time.  Some combinations can be made to work better
by changing which card is the primary card (either by using a different PCI
slot, or by changing the system BIOS's preference for the primary card).  We
are investigating options for ``soft-booting'' secondary video cards to deal with this problem, and we've had some very encouraging results.

ASKER CERTIFIED SOLUTION
Avatar of GregC
GregC

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of mcardiff

ASKER

Thank you very much. I am new to the Linux arena, but with help like this it shouldn't be to hard.

Thanks.