[FreeNX-kNX] Problem to redisplay Win4Lin

[Ace Suares]

On Friday 29 February 2008, Alastair Johnson wrote:
> I know nothing about win4lin but have had no problems running either
> qemu or vmware over NX. Which version of freenx and the nx libs are you
> using?

I use 1.5 I think, but apart from version numbering, I have no problem at 
all to access the desktop of the VM!

On the host, kvm/qemu runs Ubuntu Breezy; I get to see it's desktop 
without problems. I can start win4lin.

Using freenx, I can easily get another desktop to show, which is the 
desktop from the VM. This desktop is faster then the one the qemu gives 
me, and I can move the mouse in and out that desktop (while in qemu, it 
grabs the mouse and I need Alt-Ctrl to get the mouse back).

So far so good, but I can't start win4lin. Actually, it's starting, it 
shows a black outline of where the window would be for about 2 sec, and 
the Win4Lin sits in the task bar (gnome). It's in the forground too, I 
can see other windows but I need to switch (Alt-tab) first before I can 
touch other windows.

When I am in the VM, I can set DISPLAY=:1000 and then start win4lin; it 
will do the exact same thing in the freenx window, so win4lin is actually 
redirected to the freenx session and behaves the same like when I had 
started it straight from the freenx window.

In tightvncserver, which starts new desktops, as well as the standard 
tools in Ubuntu for desktop sharing, which mirror existing sessions, I 
can start win4lin and it will display correctly and properly. Very nice. 

And it might be the way to go (vnc that is) but I tought freenx would give 
me more flexibility and be faster, too.

The problem is, how can I debug it !? Should I trace or log the local 
X-server (the one that runs nxclient) ? Or the nxserver on the VM ? 

I am not using Java at all.

Any help still appreciated.

Ace





>
> When you use VNC are you using it to mirror the existing X session or
> is it starting a new one? The second option is similar to FreeNX in
> that win4lin would have to respect the DISPLAY settings.
>
> I think I've seen an issue with java apps just showing the window
> borders and a grey rectangle, but that may just have been with compiz.
> That was fixed by starting java with the
> -Dawt.toolkit=sun.awt.motif.MToolkit switch.
>
> Other than that check any logs or messages win4lin may give, and enable
> logging in freenx (instructions in the FAQ) then check the logs.
>
> On Friday 29 February 2008, Ace Suares wrote:
> > Hi,
> >
> > I *really* like to know if someone can shed some light on this issue.
> > As it stands now, I have to go with VNC, and that'll work, I tested
> > it. I'd rather go with freeNX tough. It's faster and more flexible.
> >
> > So any of you really really tech guys (girls) out there, PLEASE
> > answer or at least give some direction.
> >
> > Ace
> >
> >
> > Hi All,
> >
> > {snip}
> >
> > I am trying to run win4lin Terminal Server (wts), a commecial product
> > that is not supported anymore but still serves me well in the
> > educational environment.
> >
> > It's a bit of a weird setup: I run win4lin on Ubuntu Breezy, because
> > of some kernel issues, but that whole thing runs in kvm/qemu on a
> > Ubuntu Gutsy (32bit) host.
> >
> > I am trying to connect from the host, via nxclient/freenx to the kvm
> > guest, and it works wonderful! But as soon as I start win4lin, I am
> > don't see the win4lin window, altough it is running somewhere in the
> > dark corners of X.
> >
> > If I use tightvnc, win4lin is displayed as should. Also, on the kvm
> > guest (which displays it's 'console' in an X window on the host) I
> > can start win4lin without problems.
> >
> > I had some problems with fonts, at first, but I think I tackled them
> > by using xfs, a font server.
> >
> > Someone suggested that the problem was becasue win4lin uses old
> > technology for the display, i.e. Motif; but the 'xmpuzzels' (like
> > xmpanex) run perfectly over freenx.
> >
> > I am very curious to hear your toughts about this issue.
> >
> > Cheers
> > ace
>
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