Remote Access OS X to YDL X

[James Cass]

Eric -

I'm not an XDMCP expert.  I didn't even stay at a Holiday Inn Express 
last night.  :-)   I've just been monkeyin' around with it.  For more 
info about this kind of coolness, just do a Google search for "XDMCP".  
Here's a howto webpage that gives some background on what's going on:  
http://www.tldp.org/HOWTO/XDMCP-HOWTO/procedure.html#AEN46

Here's my take on your wonderings...

> Is it because the G3/266 is only responsible for the
> computations and the G3/400 takes over the drawing
> of the images

I honestly don't know for sure, but that's my thinking too.

> Is there an easier way to kill off an X11 session?
Actually, I don't use the X11 app directly to launch "X".  I issue the 
command from the Terminal app. (/Applications/Utilities/Terminal.app).  
So after I logout of my YDL session, I click on the Terminal window 
where the X process is running, and I just press "control-c".  You'll 
see the "Quitting XDarwin" message.

> Is it possible to do anything in reverse
> from OS X's X11 using my Linux box?
 From other posts I've read, this isn't directly possible.  I'd like to 
do the same thing.  Just as an aside, you can do something similar with 
Windows and Microsoft's MacOSX app, "Remote Desktop Connection", which 
is available for free here:  
http://www.versiontracker.com/dyn/moreinfo/macosx/15544
I am by no means a cheerleader for MS, but this is pretty cool too.  
You have to enable "Terminal Services" on your Windows box, but then 
you can login to the Windows box like you did with X.  It is much 
faster than VNC, but depending on what you're doing, you may want VNC 
instead.

> One quirk I have to overcome is that the current
> session is using my modified X11 mouse settings
Not sure about that one.  Try launching your X session from the 
Terminal app instead of the X11 app.

HTH...James


On Jan 19, 2005, at 11:54 AM, Eric Dunbar wrote:

> James Cass wrote:
>>> In many ways it feels much smoother
>> Oh yeah, it's much better.  Try "Tux Racer" now.  It's actually
>> enjoyable and not jumpy at all.  Don't try Chromium or Maelstrom
>> though.  They still creep for me.
>
> So why is Tux Racer now responsive whereas it's entirely non-fuctional
> when I run it on the G3/266 directly? Is it because the G3/266 is only
> responsible for the computations and the G3/400 takes over the drawing
> of the images (if I were to do it in reverse or had a 100BaseT
> connection I imagine that it would be even faster?)
>
>> I keep my YDL4 iBook (600MHz) on my home network but out of the way,
>> and I can still access YDL4 from my PowerBook.  It is sweet!
>
> Alright, what I've now done is booted in Linux on my PowerBook G3 and
> killed X11 the hard way by ctrl-alt-delete six times and killing the
> gdm through killall gdm.
>
> Is there an easier way to kill off an X11 session? Also, is it
> possible to run a *second* X11 session beside the one that is
> associated with run level 5?
>
> Also, out of curiosity I tried running X -broadcast on the OS X
> machine to see if I could login to *something* from my G3/266 Linux
> box. I got the grey (black-white) pattern background with the standard
> X11 mouse but nothing more. Is it possible to do anything in reverse
> from OS X's X11 using my Linux box?
>
> One quirk I have to overcome is that the current session is using my
> modified X11 mouse settings *without* having imwheel installed on the
> YDL server (which means my top two mouse buttons are functioning as
> the scroll wheel and the scroll wheel up-down direction function as
> different buttons ;).
>
> Eric.
>
>> On Jan 19, 2005, at 12:07 AM, Eric Dunbar wrote:
>>
>>> Wow, this is mind blowing! I'm accessing my YDL box (Beige G3/266) 
>>> via
>>> 10 BaseT ethernet to an 802.11b router from OS X with X11 installed
>>> (Pismo G3/400). In many ways it feels much smoother than if I access
>>> that same box via VNC Thing (OS X) & vncserver (YDL), plus, it runs 
>>> at
>>> millions of colours without a slow down!
>>>
>>> So what is happening? Has my OS X X11 become the "x server", i.e. my
>>> Pismo is now the CPU that does the heavy lifting with respect to
>>> providing apps running on the YDL box with screen update services? 
>>> All
>>> the Beige G3 YDL box has to do is run the apps that I ask it to and
>>> then these apps communicate with the "x server" running on the Pismo?
>>> What happens to these apps if I were to restart OS X without actually
>>> logging out of my YDL X11 session? Would they eventually "time out"?
>>>
>>> I'm just trying to piece together the little pearls of knowledge I've
>>> gleaned from the lists over the past few months.
>>>
>>> That was so simple (still a little stunned):
>>> 1. From the "System Settings" menu in YDL select "Login Screen". Turn
>>> on XDMCP.
>>> 2. (make sure X11 is installed into OS X) From the OS X console run:
>>> /usr/X11R6/bin/X -query IPaddress
>>> 3. Switch to X (make sure you have a way to get out of X...
>>> command-option-A will take you out of full screen mode if you happen
>>> to end up in it, command-option-escape will bring up the Force Quit
>>> dialogue).
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