[kde-linux] Triple or Quad displays with KDE4?

[Duncan]

Allistar posted on Wed, 03 Feb 2010 14:05:55 +1300 as excerpted:

>> Have you tried running as many X sessions as displays? Using only a
>> single display and user-login-specific xorg.conf files, I often run 2
>> at once, sometimes 3 or more.
> 
> I haven't tried that, no.
> 
> How does the sharing of mouse/keyboard work when multiple X sessions are
> running? Also, would I still be able to move the mouse seemlessly
> between them and drag and drop icons (but not windows) between them?

IIANM, he's suggesting using startx -- 1, to use X display 1 (the default 
uses display 0), etc.  If so, you'd switch between them using the CTRL-ALT-
Fx keys (with Fx being F7 to F10 or so on most distributions), and no, no 
drag and drop between them as they'd be independent, potentially separate 
users, etc.  But I'd not thought about the multiple independent xorg.conf 
version of that suggestion before, so don't know for sure.

That would also work with multiple keyboard and mouse hardware, 
configuring separate ones in xorg.conf, as that's what the multi-head 
terminal servers do I think, which is the closest I had come to thinking 
about that solution before, but that wouldn't solve the problem, either.

> I'm hoping there is some way to get an accelerated triple head setup
> working with KDE4 as it's one of the only things holding me back on
> 3.5.10.

AFAIK, the plumbing to get this working properly once again, using xorg 
and kernel plumbing not kde, is in the pipeline.  A major piece of it was 
the introduction of the graphics chip arbitrator in kernel 2.6.32, but 
AFAIK, there's no xorg release using it yet.  The problem is that cards 
often use the same IDs and thus knowing how to route the graphics 
instructions to the correct card is difficult.  The kernel graphics 
arbitrator is meant to track and handle that.  But it'll be later this 
year before the xorg support is out, AFAIK.

-- 
Duncan - List replies preferred.   No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master."  Richard Stallman