rms@prefect.es.llnl.GOV (Robert M. Searfus) (06/02/90)
Has anyone solved a problem connecting multiple X displays together
with a single keyboard and mouse? I am working on an application
where it would be desirable to control multiple crt displays (possibly
attached to separate workstations) from a single workstation. The X11
protocol supports multiple screens, although I've only seen this work
on a Sun treating a cgfour framebuffer as monochrome and color
screens. I seems conceivable to solve this problem at either the
server or window manager level. I would be very interested in hearing
from anyone who has used (or is planning to use) X in an application
requiring more that one physical display monitor.
(bob) Robert M. Searfus
Lawrence Livermore National Laboratoryklee@wsl.dec.com (Ken Lee) (06/04/90)
In article <9006012334.AA02822@prefect.es.llnl.gov>, rms@prefect.es.llnl.GOV (Robert M. Searfus) writes: > I would be very interested in hearing > from anyone who has used (or is planning to use) X in an application > requiring more that one physical display monitor. There are a couple of different ways to do this: 1. One CPU with 2 monitors. DEC sells some machines like this. I'm sure other vendors do, too. With this configuration, one X server manages both displays, considering them to be separate screens. The application interacts with either screen through a single connection to that X server. 2. Two CPUs, each with 1 monitor. This configuration is more expensive, but more flexible. Since each CPU will have it's own X server, the application must create and manage separate connections to each. Since X supports networking, this is pretty simple to do. Note: I use the term CPU for lack of a better term. It can be a workstation, X terminal, or whatever. Ken Lee DEC Western Software Laboratory, Palo Alto, Calif. Internet: klee@wsl.dec.com uucp: uunet!decwrl!klee
jg@zorch.crl.dec.com (Jim Gettys) (06/05/90)
This reply is coming from a DECstation 5000/200 (aka 3MAX), with 3 screens attached (CX), driven by a single X server. We program announced support for such workstations last week; coming soon to DS5000's near you. This should be no particular surprise to competitors, as it was demo'ed at the DS5000 annoucement in April. They are highly addictive, I will say :-). Nothing like real-estate. - Jim Gettys
ben@hpcvlx.cv.hp.com (Benjamin Ellsworth) (06/06/90)
I don't know of any applications which require multiple screens.
I work at an HP series 300 workstation configured with three screens
(three crts, one keyboard, one mouse); I really like the extra screen
space. The configuration is simple to control (/usr/lib/X11/X0screens),
and it works quite well. I also run a configuration of two displays
running from a single workstation. One display having two crts and the
other having only one crt (both have their own keyboard and mouse). I
find this configuration indispensible for testing.
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-----------------------------------------------------------------------rlb@solstice.riacs.edu (Bob Brown) (06/11/90)
I use a Sun 3/160 with two screens (bwtwo0 and cgtwo0) and a single server manages them as host:0.0 and host:0.1. As someone else said, it's addictive. No special software was needed; I just run xinit and up it all comes. Bob Brown RIACS/NASA Ames