On Fri, Dec 11, 2009 at 10:02, Tim Wescott <[email protected]> wrote:
> I wrote quite a while ago with problems with sharing my desktop under
> Ubuntu.  It looks like it ought to work, I have the remote server set up
> so that it should share the desktop all the way, yet the best I can get
> (and intermittently at that) is a view of the desktop that happens to be
> open on my machine -- this is not helpful for doing the occasional bit
> of work on the computer in my office when I'm physically up in the house.
>
> Someone suggested using ssh.  This works after a fashion -- I can 'ssh
> -X' into the remote machine, and if I have remembered to turn off
> Thunderbird I can get my mail.  Trying to do simulation runs with Scilab
> is a disaster -- Scilab uses OpenGL, and either the way that it uses it
> or something about OpenGL disagrees with my laptop, and it will do so
> through an ssh connection even worse than on the laptop itself.
>
> I recently upgraded both of the machines in question to 9.10, in hopes
> of improvement -- it made no substantial change (although I now have OOo
> 3.1, so it's not a total washout).
>
> Remote desktop connections with Windows, at least on a fast network, are
> easy and seamless for the user.  It sure would be nice if Linux could
> offer the same thing.

issues of how to share the desktop aside (i second the vote for VNC,
but that won't do what you want in terms of using your already-running
desktop remotely), GL apps are notoriously hard to do well
remotely--hell, SGI invented a proprietary protocol to do remote-GL
and even it wasn't particularly speedy, though at least it worked
between two SGI's (caveat, last time i used this was in 1999.)

if you're using hardware-accelerated GL to run scilab on your desktop,
it seems highly unlikely to me that you'll be able to attach remotely
and meaningfully interact with the display.  non-GL programs should be
fine once you get the sharing working.

scilab itself has instructions for disabling hardware acceleration to
get around rendering problems at the cost of speed (and if you end up
using VNC, the suggestions here will effectively happen automatically
since VNC is a software-only display, no hardware access used):

http://wiki.scilab.org/Graphical_issues_with_Scilab_5.0

While windows may Just Work with remote view of GL-type programs, I
can't believe the speed would be usable for something nontrivial.  Is
that really the case?
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