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Bug#1269: Acknowledgement (X2go server crashes on Ubuntu 16.04 starting at 2018-03-08)
by krehberg＠aol.com 16 Mar '18

16 Mar '18

I updated both the Windows 10 client and the Ubuntu 16.04 server to the very latest releases and the problem has disappeared. Thank you for your help. My server may have been a little too old for the new client version I was using. -----Original Message----- From: X2Go Bug Tracking System <owner(a)bugs.x2go.org> To: krehberg <krehberg(a)aol.com> Sent: Fri, Mar 9, 2018 2:15 pm Subject: Bug#1269: Acknowledgement (X2go server crashes on Ubuntu 16.04 starting at 2018-03-08) Thank you for filing a new Bug report with X2Go. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): X2Go Developers <x2go-dev(a)lists.x2go.org> If you wish to submit further information on this problem, please send it to 1269(a)bugs.x2go.org. Please do not send mail to owner(a)bugs.x2go.org unless you wish to report a problem with the Bug-tracking system. -- 1269: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1269 X2Go Bug Tracking System Contact owner(a)bugs.x2go.org with problems

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Processed: your mail
by owner＠bugs.x2go.org 16 Mar '18

16 Mar '18

Processing commands for control(a)bugs.x2go.org: > severity 1269 grave Bug #1269 [nxagent] X2go server crashes on Ubuntu 16.04 starting at 2018-03-08 Severity set to 'grave' from 'normal' > merge 1272 1269 Bug #1272 [nxagent] nxagent crashes on Ubuntu 16.04, making x2go server unusable Bug #1269 [nxagent] X2go server crashes on Ubuntu 16.04 starting at 2018-03-08 Merged 1269 1272 > forwarded 1272 https://github.com/ArcticaProject/nx-libs/issues/677 Bug #1272 [nxagent] nxagent crashes on Ubuntu 16.04, making x2go server unusable Bug #1269 [nxagent] X2go server crashes on Ubuntu 16.04 starting at 2018-03-08 Set Bug forwarded-to-address to 'https://github.com/ArcticaProject/nx-libs/issues/677'. Set Bug forwarded-to-address to 'https://github.com/ArcticaProject/nx-libs/issues/677'. > fixed 1272 3.5.99.16 Bug #1272 [nxagent] nxagent crashes on Ubuntu 16.04, making x2go server unusable Bug #1269 [nxagent] X2go server crashes on Ubuntu 16.04 starting at 2018-03-08 There is no source info for the package 'nxagent' at version '3.5.99.16' with architecture '' Unable to make a source version for version '3.5.99.16' Marked as fixed in versions 3.5.99.16. Marked as fixed in versions 3.5.99.16. > thanks Stopping processing here. Please contact me if you need assistance. -- 1269: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1269 1272: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1272 X2Go Bug Tracking System Contact owner(a)bugs.x2go.org with problems

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Processed (with 3 errors): your mail
by owner＠bugs.x2go.org 16 Mar '18

16 Mar '18

Processing commands for control(a)bugs.x2go.org: > reassign 1272 nxagent 3.5.99.15 Bug #1272 [nxagent] nxagent crashes on Ubuntu 16.04, making x2go server unusable Ignoring request to reassign bug #1272 to the same package Bug #1272 [nxagent] nxagent crashes on Ubuntu 16.04, making x2go server unusable There is no source info for the package 'nxagent' at version '3.5.99.15' with architecture '' Unable to make a source version for version '3.5.99.15' Marked as found in versions 3.5.99.15; no longer marked as found in versions 3.5.99.15-0~201803072246~ubuntu16.04.1. > reassign 1269 nxagent 3.5.99.15 Bug #1269 [nxagent] X2go server crashes on Ubuntu 16.04 starting at 2018-03-08 Ignoring request to reassign bug #1269 to the same package Bug #1269 [nxagent] X2go server crashes on Ubuntu 16.04 starting at 2018-03-08 There is no source info for the package 'nxagent' at version '3.5.99.15' with architecture '' Unable to make a source version for version '3.5.99.15' Marked as found in versions 3.5.99.15; no longer marked as found in versions 3.5.99.15-0~201803072246~ubuntu16.04.1. > merge 1272 1269 Bug #1272 [nxagent] nxagent crashes on Ubuntu 16.04, making x2go server unusable Unable to merge bugs because: severity of #1269 is 'normal' not 'grave' Failed to merge 1272: Did not alter merged bugs. Debbugs::Control::set_merged("transcript", GLOB(0x26029c0), "requester", "Mihai Moldovan <ionic\(a)ionic.de>", "request_addr", "control\(a)bugs.x2go.org", "request_msgid", "<9c1f7dc8-920e-5793-f225-1de5a05462a4\(a)ionic.de>", "request_subject", ...) called at /usr/share/perl5/Debbugs/Control/Service.pm line 538 eval {...} called at /usr/share/perl5/Debbugs/Control/Service.pm line 537 Debbugs::Control::Service::control_line("line", "merge 1272 1269", "clonebugs", HASH(0x2566f70), "limit", HASH(0x2555a10), "common_control_options", ARRAY(0x25559b0), "errors", ...) called at /usr/lib/debbugs/service line 470 > forwarded 1272 https://github.com/ArcticaProject/nx-libs/issues/677 Failed to set the forwarded-to-address of 1272: failed to get lock on /var/lib/debbugs/spool/lock/1272 -- Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. at /usr/share/perl5/Debbugs/Common.pm line 600. Debbugs::Common::filelock("/var/lib/debbugs/spool/lock/1272") called at /usr/share/perl5/Debbugs/Status.pm line 213 Debbugs::Status::read_bug("bug", 1272, "lock", 1) called at /usr/share/perl5/Debbugs/Status.pm line 468 Debbugs::Status::lock_read_all_merged_bugs("bug", 1272) called at /usr/share/perl5/Debbugs/Control.pm line 3674 Debbugs::Control::__begin_control("transcript", GLOB(0x26029c0), "request_subject", "", "bug", 1272, "affected_bugs", HASH(0x2456d78), "requester", ...) called at /usr/share/perl5/Debbugs/Control.pm line 1211 Debbugs::Control::set_forwarded("transcript", GLOB(0x26029c0), "requester", "Mihai Moldovan <ionic\(a)ionic.de>", "request_addr", "control\(a)bugs.x2go.org", "request_msgid", "<9c1f7dc8-920e-5793-f225-1de5a05462a4\(a)ionic.de>", "request_subject", ...) called at /usr/share/perl5/Debbugs/Control/Service.pm line 389 eval {...} called at /usr/share/perl5/Debbugs/Control/Service.pm line 388 Debbugs::Control::Service::control_line("line", "forwarded 1272 https://github.com/ArcticaProject/nx-libs/issu"..., "clonebugs", HASH(0x2566f70), "limit", HASH(0x2555a10), "common_control_options", ARRAY(0x25559b0), "errors", ...) called at /usr/lib/debbugs/service line 470 > fixed 1272 3.5.99.16 Failed to add fixed on 1272: failed to get lock on /var/lib/debbugs/spool/lock/1272 -- Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. Unable to lock /var/lib/debbugs/spool/lock/1272 Resource temporarily unavailable at /usr/share/perl5/Debbugs/Common.pm line 582. at /usr/share/perl5/Debbugs/Common.pm line 600. Debbugs::Common::filelock("/var/lib/debbugs/spool/lock/1272") called at /usr/share/perl5/Debbugs/Status.pm line 213 Debbugs::Status::read_bug("bug", 1272, "lock", 1) called at /usr/share/perl5/Debbugs/Status.pm line 468 Debbugs::Status::lock_read_all_merged_bugs("bug", 1272) called at /usr/share/perl5/Debbugs/Control.pm line 3674 Debbugs::Control::__begin_control("fixed", ARRAY(0x251cd68), "request_nn", "C.152116031713665", "request_msgid", "<9c1f7dc8-920e-5793-f225-1de5a05462a4\(a)ionic.de>", "message", ARRAY(0x2456c28), "recipients", ...) called at /usr/share/perl5/Debbugs/Control.pm line 1739 Debbugs::Control::set_fixed("transcript", GLOB(0x26029c0), "requester", "Mihai Moldovan <ionic\(a)ionic.de>", "request_addr", "control\(a)bugs.x2go.org", "request_msgid", "<9c1f7dc8-920e-5793-f225-1de5a05462a4\(a)ionic.de>", "request_subject", ...) called at /usr/share/perl5/Debbugs/Control/Service.pm line 342 eval {...} called at /usr/share/perl5/Debbugs/Control/Service.pm line 341 Debbugs::Control::Service::control_line("line", "fixed 1272 3.5.99.16", "clonebugs", HASH(0x2566f70), "limit", HASH(0x2555a10), "common_control_options", ARRAY(0x25559b0), "errors", ...) called at /usr/lib/debbugs/service line 470 > thanks Stopping processing here. Please contact me if you need assistance. -- 1269: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1269 1272: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1272 X2Go Bug Tracking System Contact owner(a)bugs.x2go.org with problems

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Bug#1269: X2go server crashes on Ubuntu 16.04
by Maciej Puzio 15 Mar '18

15 Mar '18

Philip, thanks a lot for the links to the Arctica bugs. While my symptoms are somewhat different (the crash occurs "automatically", just after the login, no window movement is necessary), the underlying cause is probably the same. As the Arctica report suggests, the problem is in fact dependent on the dual-screen configuration on the client side, and is solved by the fixed packages in the nightly build.

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Re: [X2Go-Dev] x2go wiki : self-debugging instructions ? -> SOLVED
by Manfred Amoureux 15 Mar '18

15 Mar '18

So I first tried reinstalling x2goclient and it did not work, even with an *apt-get purge* , deleting the *session* file in ~/.x2goclient/ and rebooting the server. Then I finally noticed something : - the connection did not work from my Laptop (which is of course, the one from which I need it to work) : Linux Mint 18 with x2go client 4.0.5 - the connection worked from an old Windows 7 with x2go client 4.1.1 - it also worked from a Debian 9 with x2go client 4.1.1 The version of x2go installed on the server is 4.1.0. So it made sense to try installing the latest stable x2go client version. After checking, I ahd indeed not added the ppa to the software sources and was using the version from the Linux Mint repositories. So I did that and now it works. Shall I ask something to the wiki ? Manfred A. 2018-03-15 15:54 GMT+01:00 Manfred Amoureux <mamoureux7(a)gmail.com>: > Ok. > > Now that you have attracted my attention this git request ( *nxagent > crashes when moving the session window into another screen* ), it > actually looked more like a client-side issue, > so I tested again from another computer (with Windows 7 and a single > screen) and while at the first attempt the connection failed with a message > that let me think it was because there was an open connection on the server > with this user, after a reboot from the server machine, the connection now > works from this computer. > > So I guess it really is a client problem now. > I am first going to to try uninstalling and reinstalling x2go client from > my computer. > > > Manfred Amoureux > Tel: (+33)6.800.343.16 > > 2018-03-15 15:16 GMT+01:00 Mihai Moldovan <ionic(a)ionic.de>: > >> * On 03/15/2018 03:07 PM, Manfred Amoureux wrote: >> > I recorded a screen capture while trying to start a connection from >> another >> > computer. See the link below. >> > As you can see, it seems the connection gets opened but the window >> crashes >> > immediately. I have tried from several computers (including one with >> Windows) so >> > I don't think it's a problem on the client side. >> >> Classic pattern of https://github.com/ArcticaProject/nx-libs/issues/677 >> >> Will be fixed with the next nx-libs release, but I cannot tell when that >> will >> be. Ideally I'd like to see more xinerama changes/fixes to make it >> worthwhile. >> >> >> > I have attached an extract of the /var/log/syslog file these last >> minutes. I see >> > nothing that looks like an error to me. Obviously, you should be able to >> > interpret it better than me. >> > I have also restarted x2go (/sudo systemctl stop x2goserver.service/ >> and then >> > /sudo systemctl start x2goserver.service/ ) after changing the >> > /etc/x2go/x2goserver.conf file with logging to /debug/. That is the >> second text >> > file attached. >> > >> > In it, I can see : >> > Mar 15 14:51:15 ServeurITeN /usr/bin/x2gostartagent: successfully >> started X2Go >> > Agent session with ID manfred-50-1521121872_stDXFCE_dp24 >> > Which means, I guess, the session was properly started. >> >> Well, that message is an euphemism. We launched the binary, but >> everything that >> happens after that is unknown since we immediately put the process into >> background. But yeah, having it spawned nxagent is good. >> >> >> > However, further on, I can also see : >> > Mar 15 14:51:22 ServeurITeN x2gogetstatus: db_getstatus called, session >> ID: >> > manfred-50-1521121872_stDXFCE_dp24, return value: >> > Mar 15 14:51:22 ServeurITeN x2gocleansessions: >> > manfred-50-1521121872_stDXFCE_dp24: removed from database, not >> updating status. >> > Mar 15 14:51:22 ServeurITeN x2gocleansessions: >> > manfred-50-1521121872_stDXFCE_dp24: in failed state, but agent is >> gone, forgetting. >> > Is that some kind of failure ? >> >> That indicates that x2goagent/nxagent died after starting up. >> >> >> > It is also interesting to see that when I issue a /who/ command with >> the Linux >> > Terminal , there is one extra session under my login. >> >> Yup, X2Go uses SSH connections for everything. >> >> >> > So I tried opening a x2go session with another login, which also failed >> but with >> > a different error message : "/Failed to start X2Go Agent session with ID >> > formation-50-1521122343_stDXFCE_dp24. X2Go Agent terminated >> unexpectedly. >> > Aborting session startup./" I then restarted the x2goserver.service >> again and >> > tried again with the other user account and got the same error as for >> the first >> > user ("The connection with the remote server was shut down. Please >> check the >> > state of your network connection."). >> >> The first error message is weird, but explainable by the fact that the >> proxy was >> not quick enough to connect in the first place (or something like this). >> >> Right now, you have two options: wait for a new nx-libs release (as said, >> unspecified time) or switch to the nightly/heuler repository that >> contains a fix >> for this issue... and switch back to the stable version once the new >> version has >> been properly released. >> >> >> >> Mihai >> >> >

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x2go wiki : self-debugging instructions ?
by Manfred Amoureux 15 Mar '18

15 Mar '18

Hello to all. I just joined the mailing list. First, I would like to say a word about how great I have found x2go since I started using it : I was looking for a remote desktop solution that was easy to set up and x2go worked amazingly easily and well. Now the purpose of this email: After tinkering around my x2go server install, it seems I have broken it <https://ubuntuforums.org/showthread.php?t=2386633>. I am not here to ask for help me fixing it (although, I wouldn't mind) but I have been looking for instructions in the x2go wiki <https://wiki.x2go.org/doku.php/wiki:advanced:start> about where to look for the origin of errors (logs, etc ...) and I have not found such page. Indeed, I already searched the /var/log/auth.log , but haven't found a clue of what's wrong. So, I thought there must be some basic steps that one may undertake looking for what's wrong (logs to search, command lines to execute and check the result ...) but I cannot figure out which ones. I am willing to help the community by filling some pages in the wiki (so nobody will have to bother the mailing list again asking what I am currently asking) - I just need to find out how one create an account for the wiki. Regards / Grüße and thanks for your work ! Manfred A.

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Bug#1272: Triggered by client window maximisation
by Carsten Lechte 15 Mar '18

15 Mar '18

This perfectly describes the problem I had with the ppa:x2go/stable version, both client and server on ubuntu 1604. The crash of nxagent seems to be triggered by maximisation of the client window, e.g. when it is configured to use a whole display. If a static window size is configured, the crash happens when I move the client window. Maybe the unity window manager is sending some windowing events? My workaround was to install from the ppa:x2go/saimaa repository.

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Bug#1269: X2goserver crashes on Ubuntu 16.04
by Philip Kollmannsberger 15 Mar '18

15 Mar '18

This bug might be related to these issues on the Arctica nx-libs repo on github: https://github.com/ArcticaProject/nx-libs/issues/679 https://github.com/ArcticaProject/nx-libs/issues/677 With the most recent nightly build, moving and rezising between displays in windowed mode works fine again.

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Bug#1269: X2go server crashes on Ubuntu 16.04
by Maciej Puzio 14 Mar '18

14 Mar '18

Seeing that my issue is indeed different from both other submitters, I decided to go ahead and post a separate report (bug 1272). https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1272 The underlying cause may be turn out to be the same, so my new bug report may end up being a duplicate, or maybe not; difficult to say at this point. Please everyone who suffers from a segfaulty nxagent after a recent update to post to one of these bug reports. We need to attract developers' attention.

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Bug#1269: X2go server crashes on Ubuntu 16.04
by Maciej Puzio 14 Mar '18

14 Mar '18

Philip, thank you for your report, but I think you are experiencing a different issue, though perhaps related. In my case, every attempt to open an x2go session fails (and I have Xinerama disabled). I have reverted to the state before the update (with x2goserver 4.0.1.22-0~1197~ubuntu16.04.1 and nxagent 3.5.0.33-0~710~ubuntu16.04.1), which works fine. May I again ask the admin of x2go bug database to change the severity of this bug to grave, or I will file a duplicate bug report. Thank you very much.

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