Ok, I'll try to give some more light into it:
To make AIGLX working, nothing special is needed - just a thin client
with supported enough graphic card - a card that can do DRI. Once you
have DRI, you have AIGLX -> accelerated OpenGL for your remote desktop -
that should be enough for google earth.

Now, with compiz it is little bit more complicated. To make compiz
working, not only you need HW accelerated GLX, you also need a special
GLX extension that compiz requires. Most modern drivers support it.
If you have AIGLX working with all the extensions supported, you are
still not sorted as:
- some distros (like Ubuntu) have compiz hacked the way that it only
accepts local X. With a bit effort, that can be sorted, though.
- If your X server (running on the thin client) is a way different than
the one shipped with the distro your LTSP server is running, you are
stuck, too. For example, if your thin client is running Xserver 1.4
(i.e. Ubuntu-hardy based) and your LTSP server distro ships with Xserver
1.3 (i.e. RHEL-5) it also won't work or it will work, but it could be
fairly unstable.

I do not want to disappoint you - I just want to say that it can be
done, but it (sometimes) require a piece of work and knowledge.

In my previous note It was sort of complain to the Ubuntu developers.
Assuming local X for compiz is not conceptually a good idea. Even if in
95% cases X runs locally you should not automatically count on it -
beauty of X is the client-server mechanism that allows (among other
benefits) LTSP existence. Do you think you can do Vista Aero via RDP
protocol? Guess what the answer is...

Ondrej

David Burgess wrote:
> On Thu, Jun 12, 2008 at 9:57 AM, Ondrej Valousek <[EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>> wrote:
>
>     My LTSP server is running Ubuntu Hardy and I can not use compiz
>     (desktop
>     effects) on LTSP clients.
>     Tracking down the problem:
>     /usr/bin/compiz is quite nasty written script which seems to only
>     counts
>     on the locally running X.
>     Give it a remote X (via XDMCP) and it gets very confused.
>
>     Does anyone have an explanation for that?
>     It is running just fine with LTSP server running RHEL-5.
>
>     Thanks,
>     Ondrej
>
>
> I wish I did. I have to admit I'm a little confused, as you are the
> one on this list that is usually touting aiglx and dri as a solution
> to the lack of GL on ltsp thin clients, and now you're asking how to
> make it work.
>
> Please don't read that as a criticism, because that's not how it's
> intended. I'm just feeling a little deflated, because I had hopes of
> running compiz, googleearth, etc. on  my ltsp network, but if you
> don't know how to make it hum then I don't know who would.
>
> Or do you have GL working in other programs such as googleearth, but
> just not in compiz? Perhaps if you could write a quick howto on using
> aiglx to get 3D accelleration on thin clients then some of your
> understudies might be able to provide insight on the compiz problem. I
> think I'll start another thread on this so as not to hijack this one.
>
> db
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