XWin -silent-dup-error does not work anymore

XWin -silent-dup-error does not work anymore

[Cees Dam]

If Xwin.exe is started with -silent-dup-error flag and a second instance of
Xwin.exe is also started with the -silent-dup-error flag a pop-up
notification shows up with fatal errors. The output in the terminal (with
-silent-dup-error flag) is the same as shown below with the -v flag.

====================================================================

Xwin -v > bugreport
Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 1.17.1.0
OS: CYGWIN_NT-6.1 Productie 1.7.35(0.287/5/3) 2015-03-04 12:09 x86_64
OS: Windows 7 Service Pack 1 [Windows NT 6.1 build 7601] (Win64)
Package: version 1.17.1-2 built 2015-02-23

XWin was started with the following command line:

Xwin -v

(EE) Fatal server error:
(EE) Server is already active for display 0
        If this server is no longer running, remove /tmp/.X0-lock
        and start again.
(EE) Fatal server error:
(EE) Cannot move old log file "/var/log/xwin/XWin.0.log" to
"/var/log/xwin/XWin.0.log.old"
winDeinitMultiWindowWM - Noting shutdown in progress


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Re: XWin -silent-dup-error does not work anymore

[Jon TURNEY]

On 25/04/2015 09:32, Cees Dam wrote:
> If Xwin.exe is started with -silent-dup-error flag and a second instance of
> Xwin.exe is also started with the -silent-dup-error flag a pop-up
> notification shows up with fatal errors. The output in the terminal (with
> -silent-dup-error flag) is the same as shown below with the -v flag.

Thanks for reporting this.

It seems that this has been broken for almost 2 years, so perhaps this 
option is not often used :D

I'd be interested to hear what your use case is for it?

I'll have a go at fixing it, but it seems there is an interaction now 
with the '-nolisten tcp' default which makes this not quite straightforward.

-- 
Jon TURNEY
Volunteer Cygwin/X X Server maintainer

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RE: XWin -silent-dup-error does not work anymore

[Cees Dam]

Hello Jon,

I work as system administrator at the Rotterdam Port Authority. One of the main systems is a huge Vessel Traffic System build of more then 100 Suse Linux 
Systems. About half of the processors is used to display the harbour of Rotterdam with al the vessels (retrieved from 41 RADAR stations) and AIS.
All the network traffic within this system is based on multicasting.

However, on a few locations like the office of the Pilots, firewalls prevent the multicasting traffic. So I installed a couple of Win 7 systems at there office with Cygwin. With X over ssh I deliver them the same display (application) as on the Traffic centers. Cygwin is installed with only xinit and openssh.

These people are not familiar with computers so I gave them one link on there desktop starting XWin and the ssh connection (mintty -e etc). If they want to start the session again (because they were unaware of the fact a session was already running) I don't like popups and warnings. They should click the X icon on the taskbar to bring the application back up on there desktop.

In 2014 I build a Cygwin 64 bit version (one of the first 64-bit releases) and this problem did not occur.

So it's important for a friendly way of use for people who don't have any kwowledge of computers.

I hope you can solve the problem.

With regrads,

Ing. C. Dam
Hoek van Holland,Rotterdam,The Netherlands


-----Oorspronkelijk bericht-----
Van: Jon TURNEY [mailto:jon.turney@dronecode.org.uk] 
Verzonden: donderdag 30 april 2015 13:10
Aan: Cees Dam; cygwin@cygwin.com
Onderwerp: Re: XWin -silent-dup-error does not work anymore

On 25/04/2015 09:32, Cees Dam wrote:
> If Xwin.exe is started with -silent-dup-error flag and a second 
> instance of Xwin.exe is also started with the -silent-dup-error flag a 
> pop-up notification shows up with fatal errors. The output in the 
> terminal (with -silent-dup-error flag) is the same as shown below with the -v flag.

Thanks for reporting this.

It seems that this has been broken for almost 2 years, so perhaps this option is not often used :D

I'd be interested to hear what your use case is for it?

I'll have a go at fixing it, but it seems there is an interaction now with the '-nolisten tcp' default which makes this not quite straightforward.

--
Jon TURNEY
Volunteer Cygwin/X X Server maintainer


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Re: XWin -silent-dup-error does not work anymore

[Jon TURNEY]

On 30/04/2015 18:19, Cees Dam wrote:
> I work as system administrator at the Rotterdam Port Authority. One of the main systems is a huge Vessel Traffic System build of more then 100 Suse Linux
> Systems. About half of the processors is used to display the harbour of Rotterdam with al the vessels (retrieved from 41 RADAR stations) and AIS.
> All the network traffic within this system is based on multicasting.
>
> However, on a few locations like the office of the Pilots, firewalls prevent the multicasting traffic. So I installed a couple of Win 7 systems at there office with Cygwin. With X over ssh I deliver them the same display (application) as on the Traffic centers. Cygwin is installed with only xinit and openssh.
>
> These people are not familiar with computers so I gave them one link on there desktop starting XWin and the ssh connection (mintty -e etc). If they want to start the session again (because they were unaware of the fact a session was already running) I don't like popups and warnings. They should click the X icon on the taskbar to bring the application back up on there desktop.
>
> In 2014 I build a Cygwin 64 bit version (one of the first 64-bit releases) and this problem did not occur.
>
> So it's important for a friendly way of use for people who don't have any kwowledge of computers.
>
> I hope you can solve the problem.

I uploaded X server 1.17.1-5 packages today.

With those, -silent-dup-error should be working again.

Thanks again for reporting this issue.

> Van: Jon TURNEY [mailto:jon.turney@dronecode.org.uk]
> Verzonden: donderdag 30 april 2015 13:10
> Aan: Cees Dam; cygwin@cygwin.com
> Onderwerp: Re: XWin -silent-dup-error does not work anymore
>
> On 25/04/2015 09:32, Cees Dam wrote:
>> If Xwin.exe is started with -silent-dup-error flag and a second
>> instance of Xwin.exe is also started with the -silent-dup-error flag a
>> pop-up notification shows up with fatal errors. The output in the
>> terminal (with -silent-dup-error flag) is the same as shown below with the -v flag.
>
> Thanks for reporting this.
>
> It seems that this has been broken for almost 2 years, so perhaps this option is not often used :D
>
> I'd be interested to hear what your use case is for it?
>
> I'll have a go at fixing it, but it seems there is an interaction now with the '-nolisten tcp' default which makes this not quite straightforward.

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