X11 forwarding problem

X11 forwarding problem

[Hugh Campbell]

I am using WordPerfect 5.1 under Mandrake 9.0, using FREEDOS and DOSEMU.
It works beautifully, and notwithstanding earlier comments that not too
many people seem to be interested in Dosemu anymore, it is _absolutely
essential_ for me, and ultimately, I hope for my entire office (a small
law firm of 12 people) as I switch us over (slowly) to Linux.

Whatever happens, we will continue to use WordPerfect 5.1 for the
foreseeable future.  It is simply _massively_ faster than anything else
that could replace it.  So WordPerfect is fundamental to our business,
and therefore so is DOS support. 

Now my problem.  WordPerfect works perfectly under Dosemu when run on a
machine locally - ie when typing at the same machine that
WordPerfect/Dosemu is running on.  However, when I run
WordPerfect/Dosemu over SSH using X11 forwarding from a remote computer,
the session crashes and disappears immediately whenever I switch video
modes by doing a print preview.  Everything else works through SSH
unless and until I do the print preview.

The print preview switches video modes, and while Dosemu handles this
flawlessly on the local machine, something about the X11 forwarding is
killing the whole session.  

Does anyone know why this is killing the Dosemu session across SSH, but
not locally?  I have fiddled with various video settings in dosemu.conf,
but nothing seems to help.  Is there a way to fix it?

Hugh Campbell
Ottawa, Ontario, Canada

Re: X11 forwarding problem

[Bart Oldeman]

On Mon, 3 Feb 2003, Hugh Campbell wrote:

> Does anyone know why this is killing the Dosemu session across SSH, but
> not locally?  I have fiddled with various video settings in dosemu.conf,
> but nothing seems to help.  Is there a way to fix it?

the only option that *might* fix it but I'm not at all sure is
$_X_mitshm = (on)
try to set that to (off), to force it not to use MIT shared memory
extensions that speed up xdosemu on local machines.

Bart

Re: X11 forwarding problem

[Hugh Campbell]

On Mon, 03 Feb 2003 16:00:25 -0500 (EST), Bart Oldeman wrote:

>On Mon, 3 Feb 2003, Hugh Campbell wrote:
>
>> Does anyone know why this is killing the Dosemu session across SSH, but
>> not locally?  I have fiddled with various video settings in dosemu.conf,
>> but nothing seems to help.  Is there a way to fix it?
>
>the only option that *might* fix it but I'm not at all sure is
>$_X_mitshm = (on)
>try to set that to (off), to force it not to use MIT shared memory
>extensions that speed up xdosemu on local machines.
>
>Bart
>

YES!!!!

Thank you _SOOOO_ much!!!

It works using SSH across my local LAN, and I have no reason to expect
that it won't work across the Internet too.

Using the -C parameter (to compress data), it works very comfortably.
Without the -C the print preview completely crawls (because it's a
graphic mode), though this was not necessary for WordPerfect in normal
text mode.

Brilliant job. Well done. Many, many thanks.

Hugh Campbell

Re: X11 forwarding problem

[Bart Oldeman]

On Mon, 3 Feb 2003, Hugh Campbell wrote:

> Using the -C parameter (to compress data), it works very comfortably.
> Without the -C the print preview completely crawls (because it's a
> graphic mode), though this was not necessary for WordPerfect in normal
> text mode.

ssh -c blowfish -C may be even faster.

> Brilliant job. Well done. Many, many thanks.

well it seems that the X code is now faked so well by ssh that it
thinks that it does not run across the network, so I guess some
adjustments would be nice if what you had to do manually will be done
automatically.

Bart