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Subject: RE: Remotely run GUI shows up incorrectly on Cygwin 1.7.1
Date: Fri, 19 Mar 2010 10:23:08 +1000
Message-ID: <9B9EE702219E9248868AF5DECEA33762016C43C7@INDMAIL.lands.resnet.qg>
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From: "Denham Robert" <Robert.Denham@derm.qld.gov.au>
To: "Dan Sandberg" <dan.sandberg.lists@gmail.com>, <cygwin@cygwin.com>
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> Hi,
>=20
> I recently upgraded a computer running XP Embedded to Cygwin 1.7.1.=20
> When I ssh from another computer, and run a graphical program (such as

> the calculator included in Win XP), it doesn't display correctly.
>=20
> If I run the program from a local ssh shell, it does display
correctly.=20
> Here's a picture which shows both a locally run instance (bottom left)

> and a remotely run instance (top right).
> ...
> Anyone have any ideas?  Perhaps a bug in the latest Cygwin?

I had a problem running a fullscreen X session using ssh under cygwin
1.7.  At the time I did a search and found this message to the list:

> -----Original Message-----
> From: Carl Flippin [mailto:carlf@photocarl.org]
> Sent: Saturday, 28 November 2009 12:44 PM
> To: cygwin@cygwin.com
> Subject: OpenSSH tunnel hanging
>=20
> I am having a problem with my ssh tunnel hanging when anything higher
bandwith (e.g. YouTube) goes over it. I am=20
> starting my tunnel as
> follows:
>=20
> ssh -D7070 user@my.host.name.com
>=20
> This is being run in urxvt on Xorg running under cygwin 1.7 on Windows
XP. The problem can be reliably recreated.=20
> I start up my tunnel as described. I run firefox configured for SOCKS
proxy at port 7070. If I surf normal text=20
> based web pages, everything is fine. If I go to a site like youtube,
video hangs about 3 seconds in. At the same=20
> time, my shell session will hang. If I close the youtube page,
everything returns to normal within about 10=20
> seconds. If I leave the page up, it will hang indefinitely.
>=20
> I can do the same thing with a tunnel from PuTTY and everything works
fine. This seems to be limited to cygwin's=20
> openssh. It also does not seem to be a simple bandwidth issue. I can
use scp to copy files from the same box at=20
> 2MB/s without issue. It seems to be only data going over the tunnel
that hangs things up.
>=20
> I have checked the FAQ and did not see anything similar. I also see
nothing like it in the mailing list archive. I=20
> am happy to be corrected if I have missed something.
>=20
> cygcheck is attached
>=20
> Thanks for any help you can offer.
>=20

I found that I could only run fullscreen if I set the depth to something
small, but it then looked terrible. I downgraded back to 1.5 and haven't
had any problems. So I'm thinking there might be a bug in ssh. Maybe
this is related?

Robert


As of 26 March 2009 the Department of Natural Resources and Water/Environme=
ntal Protection Agency integrated to form the Department of Environment and=
 Resource Management=20

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Think B4U Print
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3 sheets of A4 paper =3D 1 litre of water
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