X2Go Bug report logs - #725
client-side printing terminates X2Go Client (+ running session) in certain cases

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Package: x2goclient; Maintainer for x2goclient is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goclient is src:x2goclient.

Reported by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Date: Thu, 8 Jan 2015 15:10:01 UTC

Severity: grave

Tags: pending

Merged with 702

Fixed in version

Done: X2Go Release Manager <git-admin@x2go.org>

Bug is archived. No further changes may be made.

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From: owner@bugs.x2go.org (X2Go Bug Tracking System)
Subject: Bug#702 closed by X2Go Release Manager <git-admin@x2go.org> (X2Go
 issue (in src:x2goclient) has been marked as closed)
Message-ID: <handler.702.c.142434710420041.notifdone@bugs.x2go.org>
References: <20150219115758.6B1145DCAB@ymir.das-netzwerkteam.de>
X-X2go-PR-Keywords: pending
X-X2go-PR-Message: they-closed 702
X-X2go-PR-Package: x2goclient
X-X2go-PR-Source: x2goclient
Date: Thu, 19 Feb 2015 12:00:20 +0000
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[Message part 1 (text/plain, inline)]
This is an automatic notification regarding your Bug report
which was filed against the x2goclient package:

#702: X2Go Client / NX proxy window disappear when printing/viewing a CUPS-X2Go print job

It has been closed by X2Go Release Manager <git-admin@x2go.org>.

Their explanation is attached below along with your original report.
If this explanation is unsatisfactory and you have not received a
better one in a separate message then please contact X2Go Release Manager <git-admin@x2go.org> by
replying to this email.

X2Go Bug Tracking System
Contact owner@bugs.x2go.org with problems
[Message part 2 (message/rfc822, inline)]
From: X2Go Release Manager <git-admin@x2go.org>
To: 702-submitter@bugs.x2go.org
Cc: control@bugs.x2go.org, 702@bugs.x2go.org
Subject: X2Go issue (in src:x2goclient) has been marked as closed
Date: Thu, 19 Feb 2015 12:57:58 +0100 (CET)
close #702


we are very hopeful that X2Go issue #702 reported by you
has been resolved in the new release ( of the
X2Go source project »src:x2goclient«.

You can view the complete changelog entry of src:x2goclient (
below, and you can use the following link to view all the code changes
between this and the last release of src:x2goclient.


If you feel that the issue has not been resolved satisfyingly, feel
free to reopen this bug report or submit a follow-up report with
further observations described based on the new released version
of src:x2goclient.

Thanks a lot for contributing to X2Go!!!

X2Go Git Admin (on behalf of the sender of this mail)

X2Go Component: src:x2goclient
Date: Thu, 19 Feb 2015 12:49:22 +0100
Fixes: 616 642 681 702 705 713 720 742 781 782
 x2goclient ( RELEASED; urgency=medium
   [ Oleksandr Shneyder ]
   * New upstream release (
     - Fix placement of session folders in session card column. (Fixes: #681).
     - Send empty message in x2gohelper to stop AppStarting cursor. (Fixes: #616).
     - Fix multiple creations of modmap timer (OS_DARWIN).
   [ Mike Gabriel ]
   * New upstream release (
     - Add several info/error/debug log message while hunting down #702.
     - Use app.setQuitOnLastWindowClosed(false) for the X2Go Client QtApplication
       to assure that X2Go Client does not arbitrarily exit during a running
       session. This fixes X2Go Client crashes that occur when printing via
       the CUPS-X2Go printing mechanism with activate print dialog popup on
       incoming print jobs and minimized main window. (Fixes: #702).
     - Be more exact when reporting rev forwarding tunnel request failures to
       the GUI user. Include the purpose of the tunnel (NX, audio, foldersharing)
       in the error message.
     - Enable debugging in sshprocess.cpp and sshmasterconnection.cpp if
       --debug is given.
     - sshmasterconnection.cpp: Fix several grammar issues in error messages.
     - When sharing a client-side folder, do not write the SSH pub key to
       client-side authorized_keys file if the folder-to-be-shared does not
       exist on the client. (Partially solves #405).
     - Fix string concatenation/layout of error message when tunnel I/O errors
     - Improve debugging/logging the SSH connections made by X2Go Client.
     - Fix quotes when calling remote commands via SSH (esp. allow same quoting/
       escaping style for libssh and openSSH+Krb based connections). (Fixes: #720).
     - FIXME: Disable PubkeyAuthentication _and_ PasswordAuthentication if
       GSSAPI authentication is activated. This is counter intuitive, though,
       and requires several other fixes in the authentication code.
   * x2goclient.spec:
     - Always set BuildRoot: parameter.
   [ Sergey Savko ]
   * New upstream release (
     - Prevent passwordless re-logins into X2Go Session Broker if
       --broker-autologoff is used on the cmdline. (Fixes: #782).
     - Add new cmdline option --broker-noauth-use-session-username.
       When --broker-noauth is used, the broker does not know on behalf
       of which user to operate. This new option enables username syncing.
       When logging into X2Go Server, that username will be sent to the
       broker and be used for querying X2Go Broker Agents etc. (Fixes: #781).
   [ Heinrich Schuchardt ]
   * New upstream release (
     - Base the layout dialogue "Session ID" (which shows up when starting a
       connection) on typographic points (instead of pixels). (Fixes: #713).
   [ Jason Alavaliant ]
   * New upstream verson (
     - Use QUrl::toPercentEncoding() method to properly encode passwords sent
       to X2Go Session Broker. (Fixes: #705).
   [ Mike DePaulo ]
   * New upstream release (
     - Windows: Win32 OpenSSL updates from 1.0.1j to 1.0.1L, which
       fixes the CVEs announced on 2015-01-08.
     - Windows: Cygwin OpenSSL updated from 1.0.1j-1 to 1.0.1k-1, which
       fixes the CVEs announced on 2015-01-08.
     - Windows: Bundle new version of VcXsrv:
       The differences from are that its bundled
       OpenSSL has been updated to 1.0.1k, and that xorg-server
       CVE-2014-8091..8103 have been fixed.
     - Windows: Update libssh from 0.6.3 to 0.6.4 (while maintaining
       Pageant support). This fixes CVE-2014-8132, which shouldn't
       affect x2goclient because x2goclient uses the SSH client
       functionality, not the SSH server functionality.
       0.6.4 also added 4 features related to ECDSA keys.
     - Windows: Fix compatibility with PulseAudio 6.0
     - Windows: Remove workaround for audio input with old versions of
       PulseAudio (calling parec once per second)
       (Fixes: #742)
       Thanks George Trakatelis (uom.edu.gr) for submitting this change.
     - Windows: Enable X2Go Client for Windows to build under VS2010 nmake
       (but not the VS2010 IDE due to a Qt4 Visual Studio Add-in limitation)
       Note that the official builds are still build under MinGW.
       (Fixes: #642)
       Thanks George Trakatelis (uom.edu.gr) for submitting this feature.
     - Windows: Make builds easier, and updating bundled dependencies
       easier, by adding copy-deps-win32.bat. It copies the exact
       version of each dependency (DLL, executable, data, folder, etc)
       from x2goclient-contrib.git.
   [ Kaan Ozdincer ]
   * New upstream version (
     - Add Turkish translation file.

[Message part 3 (message/rfc822, inline)]
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: submit@bugs.x2go.org
Subject: X2Go Client / NX proxy window disappear when printing/viewing a CUPS-X2Go print job
Date: Mon, 15 Dec 2014 12:53:05 +0000
[Message part 4 (text/plain, inline)]
Package: x2goclient
Severity: grave

Testing with various X2Go Servers (with PostgreSQL / SQLite3 sessions  
DB, with CUPS+X2GoServer on the same machine / on different machines).

Testing on the client-side (Linux only) with X2Go Client / PyHoca-GUI  
(nightly builds as of today).

What I observe with X2Go Client (Linux version):

  o I print something on the server
  o the X2Go Client print dialog pops up
  o I choose my preferred action (print to a printer, view as PDF)
  (a) PDF comes up in a viewer/gets printed, session stays intact (4  
of 10 attempts)
  (b) nothing happens with the print job, X2Go Client / NX proxy  
vanish (no segfault)

Thus, X2Go Client's client-side printing feature is currently not  
reliable, thus not really usable. The crashes are more producible on  
large PDF/print jobs.

It would be good to hear from others that use this feature, as well.  
Does it work for you? Did it work for you? When did it stop working?

I tested this with server-side setups that have been working in the  
past already. Package upgrade + test + see above.



mike gabriel, herweg 7, 24357 fleckeby
fon: +49 (1520) 1976 148

GnuPG Key ID 0x25771B31
mail: mike.gabriel@das-netzwerkteam.de, http://das-netzwerkteam.de

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