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Bug#759: x2goclient 4.0.5.0 (and 4.0.5.1 preview) frequent ssh commands don't free resources
by Mat Martineau 17 Feb '16

17 Feb '16

I've run in to this problem as well, with these x2go versions: Client (Mac) * x2goclient 4.0.5.0 (OS X 10.9+ build) or 4.0.5.1 preview (December 2015 build) * OS X 10.11.3 * XQuartz 2.7.8 Server (Linux) * x2goagent: 3.5.0.32 * x2goserver: 4.0.1.19 * x2goserver-extensions: 4.0.1.19 * Fedora 23 (with updates as of 2016-02-17) Steps to reproduce: 1. Run 'x2goclient --debug' and open a session 2. Observe frequent xmodmap commands while session is active 3. Quit session to see a large number of SshProcess objects freed This came to my attention because the default SELinux/audit settings on Fedora 23 log five events for each xmodmap ssh command executed on the server by the client. That's 1800 events per hour when an x2go session is active. Judging from ONMainWindow::slotSetModMap() in onmainwindow.cpp, it looks like the intent is to only run the xmodmap command if kbMap is empty (maybe there's an expected way for kbMap to get cleared so it has to be periodically checked?). However, slotSetModMap() runs every 10 seconds and executes a command every time. It's not clear to me how kbMap becomes empty. Furthermore, the SshProcess objects are not cleaned up until the session is exited. The 'processes' QList in SshMasterConnection grows without bound. Logs from x2goclient --debug: """ x2go-DEBUG-../src/sshprocess.cpp:199> Executing remote command via SshProcess object 6: "export DISPLAY=":50"; echo "keycode 8 = a A aring Aring <snip>" x2go-DEBUG-../src/sshprocess.cpp:204> Running masterCon->addChannelConnection(this, '"d93c9f1a-2d4d-42fb-92a9-5373621768f6"', '"bash -c 'echo "X2GODATABEGIN:d93c9f1a-2d4d-42fb-92a9-5373621768f6"; export PATH="/usr/local/bin:/usr/bin:/bin"; export DISPLAY=":50"; echo "keycode 8 = a A aring Aring keycode 9 = s S ssharp Iacut"'); x2go-DEBUG-../src/sshmasterconnection.cpp:1284> Locking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1286> Passing new channel conenction object to channelConnections. x2go-DEBUG-../src/sshmasterconnection.cpp:1288> Unlocking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1476> Creating new channel. x2go-DEBUG-../src/sshmasterconnection.cpp:1480> New channel:0x7fcb9a7af450 x2go-DEBUG-../src/sshmasterconnection.cpp:1511> Executing remote: "bash -c 'echo "X2GODATABEGIN:d93c9f1a-2d4d-42fb-92a9-5373621768f6"; export PATH="/usr/local/bin:/usr/bin:/bin"; export DISPLAY=":50"; echo "keycode 8 = a A aring Aring <snip>" x2go-DEBUG-../src/sshmasterconnection.cpp:1534> New exec channel created. x2go-DEBUG-../src/sshmasterconnection.cpp:1638> EOF on channel 0x7fcb9a7af450; SshProcess object: 6 x2go-DEBUG-../src/sshmasterconnection.cpp:1706> EOF sent. x2go-DEBUG-../src/sshmasterconnection.cpp:1710> Channel closed. x2go-DEBUG-../src/sshprocess.cpp:517> SSH finished: raw output (stdout): "X2GODATABEGIN:d93c9f1a-2d4d-42fb-92a9-5373621768f6 X2GODATAEND:d93c9f1a-2d4d-42fb-92a9-5373621768f6 " x2go-DEBUG-../src/sshprocess.cpp:528> SSH finished: true - "" (6). <repeat every 10 seconds> """ And the log of SshProcess cleanup when the session is disconnected after a little over one minute: """ x2go-DEBUG-../src/sshmasterconnection.cpp:715> SshMasterConnection, instance SshMasterConnection(0x7fcb9cc51a90) thread finished. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshmasterconnection.cpp:722> SshMasterConnection, instance SshMasterConnection(0x7fcb9cc51a90) finished destructor. """ -- Mat Martineau Intel OTC

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Bug#999: pyhoca-gui 0.5.0.4 - About* wrong icon
by Ja Bi 17 Feb '16

17 Feb '16

Package: pyhoca-gui Version: 0.5.0.4 When you run pyhoca-gui and then click on About PyHoca-GUI (0.5.0.4) ... or About PYTHON X2Go (0.5.0.3) ... there is wrong icon on the panel. Take a look to attachment and you will know everything. Jan

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Bug#998: Image inverted when displayed via x2go
by Toby Darling 12 Feb '16

12 Feb '16

Package: x2goclient Version: 4.0.1.4 My users have an application[1] that when run under x2go inverts the image it is displaying. There is a comparative screen shot e2boxer-inverted.png at https://drive.google.com/folderview?id=0B-6ks0UHchgjTUpxSkRwd1FLa2s&usp=sha… The window on the left is through x2go and on the right is native. (I've added the red boxes and text to clarify what appears to be random splodges.) We've reproduced this discrepancy on Scientific Linux 6.7, MacOS 10.6 and MacOS 10.9. When run natively, the image is displayed correctly. x2goserver is version 4.0.1.19 running on Scientific Linux 6.7 [1] EMAN2 from http://ncmi.bcm.tmc.edu/ncmi/software/software_details?selected_software=co… The downloadable EMAN2 gzip file contains all the software required to run e2boxer.py - the program that exhibits this problem, no build or config is necessary. The sample input file Falcon_2016_02_02-09_10_45_cor.mrc is at the same link as the screen shot. Once EMAN2 is unpacked run: #-- 8< --# #!/bin/bash EMAN2DIR=<inst_dir>/EMAN2 export EMAN2DIR export PATH=$EMAN2DIR/bin:$PATH export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$EMAN2DIR/lib export PYTHONPATH=$PYTHONPATH:$EMAN2DIR/lib echo "******************" which e2boxer.py echo "******************" e2boxer.py Falcon_2016_02_02-09_10_45_cor.mrc #-- 8< --# Many thanks for the awesome work you do keeping this software going! Cheers Toby -- Toby Darling, Scientific Computing (2N249) MRC Laboratory of Molecular Biology Francis Crick Avenue Cambridge Biomedical Campus Cambridge CB2 0QH Phone 01223 267070

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Bug#997: X2Go issue (in src:x2gothinclient) has been marked as pending for release
by Mihai Moldovan 11 Feb '16

11 Feb '16

tag #997 pending fixed #997 1.5.0.0 thanks Hello, X2Go issue #997 (src:x2gothinclient) reported by you has been fixed in X2Go Git. You can see the changelog below, and you can check the diff of the fix at: http://code.x2go.org/gitweb?p=x2gothinclient.git;a=commitdiff;h=67918b8 The issue will most likely be fixed in src:x2gothinclient (1.5.0.0). light+love X2Go Git Admin (on behalf of the sender of this mail) --- commit 67918b8c9713fc6e72387009e839fa988d34aac9 Author: Mihai Moldovan <ionic(a)ionic.de> Date: Thu Feb 11 03:43:35 2016 +0100 displaymanager/init/x2gothinclient-displaymanager.init: fix unchanged "gdm" string in log message. Fixes: #997. diff --git a/debian/changelog b/debian/changelog index df8c0ae..b9e1be3 100644 --- a/debian/changelog +++ b/debian/changelog @@ -95,6 +95,8 @@ x2gothinclient (1.5.0.0-0x2go1) UNRELEASED; urgency=low [ Mihai Moldovan ] * New upstream release (1.5.0.0): - Change string "X2go" to "X2Go" where appropriate. + - displaymanager/init/x2gothinclient-displaymanager.init: fix unchanged + "gdm" string in log message. Fixes: #997. * usbmount/x2gousbmount: fix typo int -> print. Fixes: #840. -- Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Thu, 27 Feb 2014 12:03:00 +0100

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Bug#997: x2gothinclient init file probably logs wrong error message when string "text" is contained in /proc/cmdline
by Stefan Baur 08 Feb '16

08 Feb '16

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 package: x2gothinclient version: 1.1.0.2 priority: wishlist (Present in 1.5.0.0 as well, see git link below) Hi, according to https://code.x2go.org/gitweb?p=x2gothinclient.git;a=blob;f=displaymanage r/init/x2gothinclient-displaymanager.init;hb=d3ce68c710b4463fd43aa23a178 ad1eb6d2f5856 62 CONFIGURED_DAEMON="$(basename $(cat $DEFAULT_DISPLAY_MANAGER_FILE 2> /dev/null))" 63 if grep -wqs text /proc/cmdline; then 64 log_warning_msg "Not starting GNOME Display Manager (gdm); found 'text' in kernel commandline." 65 elif [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ] && \ 66 [ "$HEED_DEFAULT_DISPLAY_MANAGER" = "true" ] && \ 67 [ "$CONFIGURED_DAEMON" != "x2gothinclientd" ] ; then 68 log_action_msg "Not starting X2Go Client in TCE mode; it is not configured as default display manager" This looks like it has been copypasted from a GNOME/MATE start script: "Not starting GNOME Display Manager (gdm)" Most likely, this should be changed to: "Not starting X2Go Client in TCE mode" as in the lines below. Kind Regards, Stefan Baur - -- BAUR-ITCS UG (haftungsbeschränkt) Geschäftsführer: Stefan Baur Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJWuNI3AAoJEG7d9BjNvlEZSxMH/iS3pTIfYF5NZ7hCAzkfEsIw llA7FAXjdeSIXyyQ9nhWZUwvSktu2Fzrvtg0UhoWgwdaupFBTlRHrZal9bgZu7vz xAfjF1FlI4VaiCKpqn/E1o3XZwLNddeMjew4u9K4gEPJHUBIwpsaawBaX39PpXJl cm3Pkpx4JE1ZP3VJoTipVgRn1rQ5pNR3XxvO83csf7ViJiPbcq54ui19+YnRWzg4 8RN8hcGFwvcBpB1+3eKvMH/09C0DSnmdKQzWu9CVBs4Lsfm7vTPByjr8VjZrK/hg GRPenCXrChBqrrdAavt84jltLV9/F9u131Zlu9b8qLcMUc1XOrD3PMrcOUldTak= =X7fB -----END PGP SIGNATURE-----

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Bug#996: x2go client issues using HTTP proxy
by Nimesh Jethwa 08 Feb '16

08 Feb '16

Package: x2goclient Version: 4.0.5.0-0 When trying to connect to a session using HTTP proxy, it fails the first time with the below message in an error dialog. "Socket error: disconnected" When connecting to the same session the second time within 30 secs, the connection goes through and I am logged into my virtual desktop. I am able to replicate this issue several times. Below is the output of the client running in debug mode (with the above scenario captured) - ========== x2go-INFO-8> "Starting connection to server: desktop.a1200.virtualorgs.net:80" x2go-DEBUG-../src/onmainwindow.cpp:2758> Starting new ssh connection to server:"desktop.a1200.virtualorgs.net":"80" krbLogin: false x2go-DEBUG-../src/sshmasterconnection.cpp:168> SshMasterConnection, host "desktop.a1200.virtualorgs.net"port 80user "superuser"useproxy trueproxyserver "desktop.a1200.virtualorgs.net"proxyport 80 x2go-DEBUG-../src/sshmasterconnection.cpp:205> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:209> SshMasterConnection, instance SshMasterConnection(0x10d8030) created. x2go-DEBUG-../src/sshmasterconnection.cpp:445> SshMasterConnection, instance SshMasterConnection(0x10d8030) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:481> libssh not initialized yet. Initializing. x2go-DEBUG-../src/sshmasterconnection.cpp:559> Created HTTP proxy socket: -1 x2go-DEBUG-../src/sshmasterconnection.cpp:564> Connected to HTTP proxy server: "desktop.a1200.virtualorgs.net":80 x2go-DEBUG-../src/sshmasterconnection.cpp:581> "Cannot connect to desktop.a1200.virtualorgs.net:80" - "Socket error: disconnected" x2go-ERROR-2> "Connection error: Cannot connect to desktop.a1200.virtualorgs.net:80: Socket error: disconnected" x2go-DEBUG-../src/sshmasterconnection.cpp:711> SshMasterConnection, instance SshMasterConnection(0x10d8030) waiting for thread to finish. x2go-DEBUG-../src/sshmasterconnection.cpp:715> SshMasterConnection, instance SshMasterConnection(0x10d8030) thread finished. x2go-DEBUG-../src/sshmasterconnection.cpp:722> SshMasterConnection, instance SshMasterConnection(0x10d8030) finished destructor. x2go-INFO-8> "Starting connection to server: desktop.a1200.virtualorgs.net:80" x2go-DEBUG-../src/onmainwindow.cpp:2758> Starting new ssh connection to server:"desktop.a1200.virtualorgs.net":"80" krbLogin: false x2go-DEBUG-../src/sshmasterconnection.cpp:168> SshMasterConnection, host "desktop.a1200.virtualorgs.net"port 80user "superuser"useproxy trueproxyserver "desktop.a1200.virtualorgs.net"proxyport 80 x2go-DEBUG-../src/sshmasterconnection.cpp:205> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:209> SshMasterConnection, instance SshMasterConnection(0x10d3580) created. x2go-DEBUG-../src/sshmasterconnection.cpp:445> SshMasterConnection, instance SshMasterConnection(0x10d3580) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:498> libssh already initialized. x2go-DEBUG-../src/sshmasterconnection.cpp:559> Created HTTP proxy socket: 13 x2go-DEBUG-../src/sshmasterconnection.cpp:564> Connected to HTTP proxy server: "desktop.a1200.virtualorgs.net":80 x2go-DEBUG-../src/sshmasterconnection.cpp:792> cserverAuth x2go-DEBUG-../src/sshmasterconnection.cpp:807> state: 1 x2go-DEBUG-../src/sshmasterconnection.cpp:966> Password authentication requested. x2go-DEBUG-../src/sshmasterconnection.cpp:657> User authentication OK. x2go-DEBUG-../src/onmainwindow.cpp:2853> SSH connection established. x2go-DEBUG-../src/onmainwindow.cpp:3120> Continue normal X2Go session ========== I am able to connect on the first try with the same HTTP proxy server settings using Putty and even NoMachine v3.5. But for X2GO, it's always on the second try. I am currently using X2GO 4.0.5.0-0x2go1+git20160126.1112+jessie.main.1, Debian GNU/Linux 8, libssh4-0.6.3-4+deb8u1, libc6-2.19-18+deb8u1. Also, I can replicate this issue on Debian 8 - v4.0.3.1-4 and Windows 7 - v4.0.5.0. Any help here would be greatly appreciated. Thanks, Nimesh

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Bug#995: x2goserver and xorg.conf
by MyWorking 08 Feb '16

08 Feb '16

Package: x2goserver Version: 4.0.1.19 Hi. I want to use custom xorg.conf, but i don't no where i can put in x2goserver configuration to use it. How i can use the integrated graphics card for rendering desktop applications for my clients, for example we have NVIDIA Corporation GM107 [GeForce GTX 750 Ti], we can set in default xorg.conf there driver module for use this card in section "device", but x2goserver doesn't use him, can you help me with it?

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Bug#994: x2goclient x server crashes when launching gitk or git-gui
by k75527552 08 Feb '16

08 Feb '16

Package: x2goclient Version: 4.0.5.0 in windows 7/64 connecting to centos6.5 64 To reproduce: get a git repository, cd into it, launch git-gui Problem signature: Problem Event Name: APPCRASH Application Name: vcxsrv.exe Application Version: 1.17.0.0 Application Timestamp: 55b5056a Fault Module Name: MSVCR120.dll Fault Module Version: 12.0.21005.1 Fault Module Timestamp: 524f7ce6 Exception Code: c0000005 Exception Offset: 0000f20c OS Version: 6.1.7601.2.1.0.256.48 Locale ID: 1033 Additional Information 1: 0a9e Additional Information 2: 0a9e372d3b4ad19135b953a78882e789 Additional Information 3: 0a9e Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

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Bug#993: X2Go issue (in src:x2godesktopsharing) has been marked as pending for release
by Mihai Moldovan 07 Feb '16

07 Feb '16

tag #993 pending fixed #993 3.1.1.3 thanks Hello, X2Go issue #993 (src:x2godesktopsharing) reported by you has been fixed in X2Go Git. You can see the changelog below, and you can check the diff of the fix at: http://code.x2go.org/gitweb?p=x2godesktopsharing.git;a=commitdiff;h=e470e71 The issue will most likely be fixed in src:x2godesktopsharing (3.1.1.3). light+love X2Go Git Admin (on behalf of the sender of this mail) --- commit e470e7117439f978593e3a732c85b45d3d755b2e Author: Mihai Moldovan <ionic(a)ionic.de> Date: Sun Feb 7 17:56:27 2016 +0100 sharetray.cpp: fix type issues while calculating time difference. Fixes: #993. diff --git a/debian/changelog b/debian/changelog index 4e21389..86c668d 100644 --- a/debian/changelog +++ b/debian/changelog @@ -6,6 +6,8 @@ x2godesktopsharing (3.1.1.3-0x2go1) UNRELEASED; urgency=low - x2godesktopsharing.pro: also rename x2godesktopsharing_zh_tw in project file. - misc: fix X2GO => X2Go and add "Desktop" where missing. Fixes: #936. + - sharetray.cpp: fix type issues while calculating time difference. Fixes: + #993. * debian/control: - Drop libqt4-gui Depends. Already handled by shlibs and misc Depends. Fixes: #905.

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Bug#993: gcc 6 compile error
by Orion Poplawski 06 Feb '16

06 Feb '16

Package: x2godesktopsharing Version: 3.1.1.2 x2godesktopsharing fails to compile with gcc 6 with: sharetray.cpp: In constructor 'ShareTray::ShareTray()': sharetray.cpp:97:46: error: call of overloaded 'abs(uint)' is ambiguous QDateTime::currentDateTime().toTime_t() ) <5 ) ^ In file included from /usr/include/c++/6.0.0/cstdlib:75:0, from /usr/include/c++/6.0.0/bits/stl_algo.h:59, from /usr/include/c++/6.0.0/algorithm:62, from /usr/include/QtCore/qglobal.h:68, from /usr/include/QtCore/qnamespace.h:45, from /usr/include/QtCore/qobjectdefs.h:45, from /usr/include/QtGui/qwindowdefs.h:45, from /usr/include/QtGui/qwidget.h:46, from /usr/include/QtGui/qmainwindow.h:45, from /usr/include/QtGui/QMainWindow:1, from sharetray.h:14, from sharetray.cpp:12: /usr/include/stdlib.h:774:12: note: candidate: int abs(int) extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur; ^~~ In file included from /usr/include/c++/6.0.0/bits/stl_algo.h:59:0, from /usr/include/c++/6.0.0/algorithm:62, from /usr/include/QtCore/qglobal.h:68, from /usr/include/QtCore/qnamespace.h:45, from /usr/include/QtCore/qobjectdefs.h:45, from /usr/include/QtGui/qwindowdefs.h:45, from /usr/include/QtGui/qwidget.h:46, from /usr/include/QtGui/qmainwindow.h:45, from /usr/include/QtGui/QMainWindow:1, from sharetray.h:14, from sharetray.cpp:12: /usr/include/c++/6.0.0/cstdlib:180:3: note: candidate: long long int std::abs(long long int) abs(long long __x) { return __builtin_llabs (__x); } ^~~ /usr/include/c++/6.0.0/cstdlib:172:3: note: candidate: long int std::abs(long int) abs(long __i) { return __builtin_labs(__i); } ^~~ The attached patch casts the result to an int. -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane orion(a)nwra.com Boulder, CO 80301 http://www.nwra.com

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