From unknown Tue Apr 28 14:14:35 2026 X-Loop: owner@bugs.x2go.org Subject: Bug#1117: [X2Go-Dev] Bug#1117: x2goclient "stuck session" for select users that cannot be resumed or terminated Reply-To: Stefan Baur , 1117@bugs.x2go.org Resent-From: Stefan Baur Resent-To: x2go-dev@lists.x2go.org Resent-CC: X2Go Developers , owner@bugs.x2go.org X-Loop: owner@bugs.x2go.org Resent-Date: Tue, 29 Nov 2016 12:05:02 +0000 Resent-Message-ID: Resent-Sender: owner@bugs.x2go.org X-X2Go-PR-Message: followup 1117 X-X2Go-PR-Package: x2goclient (mac) X-X2Go-PR-Keywords: Received: via spool by 1117-submit@bugs.x2go.org id=B1117.148042095929096 (code B ref 1117); Tue, 29 Nov 2016 12:05:02 +0000 Received: (at 1117) by bugs.x2go.org; 29 Nov 2016 12:02:39 +0000 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on ymir.das-netzwerkteam.de X-Spam-Level: X-Spam-Status: No, score=0.8 required=3.0 tests=BAYES_50 autolearn=ham version=3.3.2 Received: from localhost (localhost [127.0.0.1]) by ymir.das-netzwerkteam.de (Postfix) with ESMTP id DC37D3BC8A for <1117@bugs.x2go.org>; Tue, 29 Nov 2016 13:02:37 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at ymir.das-netzwerkteam.de Received: from ymir.das-netzwerkteam.de ([127.0.0.1]) by localhost (ymir.das-netzwerkteam.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uJyNbUDLSBfA for <1117@bugs.x2go.org>; Tue, 29 Nov 2016 13:02:27 +0100 (CET) Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.126.134]) by ymir.das-netzwerkteam.de (Postfix) with ESMTPS id 7287C3BC7D for <1117@bugs.x2go.org>; Tue, 29 Nov 2016 13:02:27 +0100 (CET) Received: from [192.168.0.171] ([78.43.90.159]) by mrelayeu.kundenserver.de (mreue003 [212.227.15.129]) with ESMTPSA (Nemesis) id 0M5c8C-1cvy6Y1QAC-00xcId for <1117@bugs.x2go.org>; Tue, 29 Nov 2016 12:57:26 +0100 To: 1117@bugs.x2go.org References: <7FB7E7E5-D686-423F-B1C2-D5D6982A4E2C@queensu.ca> From: Stefan Baur Message-ID: <95cc01bd-9ab2-8205-31b9-684c49fc6b9f@baur-itcs.de> Date: Tue, 29 Nov 2016 12:57:01 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.5.0 MIME-Version: 1.0 In-Reply-To: <7FB7E7E5-D686-423F-B1C2-D5D6982A4E2C@queensu.ca> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="lsjn8mk1u8HEEKMfK8uEK7CVVNbPu7gmH" X-Provags-ID: V03:K0:WCXv2+oyKNUGNz+8lYhWTfKC76roL9Jyh6d1LU9Jf5ZUjE+sAMX zPZjQc7UzEglPAbxq7y9TIDFi4SiiYunaTjWVM2ig87cJ47j4c6uutLtLLBC7MhvRGtYdDT 7Jv3qu8s831nNGlCIbLP5YvIBp0pdbc7utRZWP2r5kPnOJpBZUoSdLwNPhyzX+36wCml+oZ rVUXgD4VkmSsHxkgu9I6A== X-UI-Out-Filterresults: notjunk:1;V01:K0:8swegseNE50=:s/6fMUO+lzrHD8bV7bPuI7 bR5IGf8WKCfsnEqseGYZa3aj2dhzVVn7TBlSqxJudJsQGA+cDNqjluQ6UoYAYLjgbUUMfiGOt 3nAHG9CO7JflqnltMCox2vbKXW9svHISOCdvNsZX1gRaTmlnG05d/IZ2AQg5cO/FknPl37xYY zjMnJGxS2yAdyy1iqL7M6SQFPLg+eHMquoAH37XMM0Ls/NUxTbahH5NGNR/NzktR6+HMl1+bK LxvElaP+TjP2Nmua3NUMUlo1a3R7IFmpGFWmZMMafU3CjVmDur2rK0tbIXyIVFvXzg+Ab8C9X w0NW8HsDW//cY4zRDLyGZ6DTM4oM8WLnA/AHayRR4d905rHJorc35Ne1b13cSk4GuwRXf7SXM hlVQwb3GJM7WeCBGdDpHtDuq/LmppZUlgtXoN1+doyfO6DoEuD29OygVLwX9t7S7ONmbFiNPz +ZWqymkxWYeP0kvOpRvHkME7wvsDCzJUb/1MCOEUHZa1Qc1ihPVGoBOIKJh12wfH+igo3Uqzp Rcc0YjxySIP9EY4m3w2jQ0ivvGKu82nRx2kVRCSzopBRGOV+wT118KF+B3TlnvmMPkGUsdrXs derRvq4rp4w+awToRRpTspAIQx7zbQ+0qovoqntfiC9dHYcxlSm3L1mFypZZ0lr2qLXfNZJQh OeXFbxO3AkcsCfQIjq0CFQsWUYUf6287ggLcugJC5r/O2yHuU4iYfqKh65/XDWOZ67QM= This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --lsjn8mk1u8HEEKMfK8uEK7CVVNbPu7gmH Content-Type: multipart/mixed; boundary="lQgWdr2Tea7uvMWhUdTWxPPAe1fIPJkKa"; protected-headers="v1" From: Stefan Baur To: 1117@bugs.x2go.org Message-ID: <95cc01bd-9ab2-8205-31b9-684c49fc6b9f@baur-itcs.de> Subject: Re: [X2Go-Dev] Bug#1117: x2goclient "stuck session" for select users that cannot be resumed or terminated References: <7FB7E7E5-D686-423F-B1C2-D5D6982A4E2C@queensu.ca> In-Reply-To: <7FB7E7E5-D686-423F-B1C2-D5D6982A4E2C@queensu.ca> --lQgWdr2Tea7uvMWhUdTWxPPAe1fIPJkKa Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Am 28.11.2016 um 23:31 schrieb Jordan Poppenk: > Package: x2goclient (mac) > Version: 4.0.5.2 > > Above is my best guess as to the affected package, although I am not ce= rtain it is on the client end. Also, my issue is similar to the one repor= ted here: > http://lists.x2go.org/pipermail/x2go-dev/2015-October/010734.html > ...but that thread concludes without a solution that works for me. > > x2go had been working for a dozen users of my server. One day, two of t= he users reported that they were no longer able to log in -- they were ki= cked back to the login screen after entering their ssh private key encryp= tion password. After entering this, the users get the result:=20 > - Session: Session session started at: (date) > - Warning: Protocol mismatch or no X authentication data. > - Session: Terminating session at (date) > - Info: Your session was closed before reaching a usable state. > - Info: This can be due to the local X server refusing access to the cl= ient. > - Info: Please check authorization provided by the remote X application= =2E > - Session: Session terminated at (date) > Sometimes, they are presented with a list of sessions that shows their = "running" session. It allows them to terminate the session, then brings t= hem back to the screen where they would terminate the session. > > It is worth noting that their configuration was previously working. Als= o, I am sometimes able to fix issues like this by deleting the user's .Xa= uthority files, their .x2go folder, and their cache/lxsession folder; and= rebooting. In this case, none of these things influenced the outcome of = their login attempts. But, many other users are still able to access x2go= normally on the same machine. What happens when you, as root, execute: x2golistsessions_root Do you see the "hung" sessions of your users? What happens when you terminate them using (again, as root, and preferably not in an X2Go session yourself) x2goterminate-session ( is what you see in the second output column of x2golistsessions_root) Does it work for them afterwards? What happens when you set up a separate test server with X2Go on it, can they connect to that one, or are they having issues with it as well? > Jordan Poppenk, Ph.D. > Canada Research Chair in Cognitive Neuroimaging > Department of Psychology and Centre for Neuroscience Studies > Queen's University > http://popmem.com > 613-533-6009 There are two things I would like to mention, due to your e-mail signatur= e: First, a warning: X2Go does have options for image compression, like using JPG and/or PNG. Not all image compression algorithms are lossless, and thus there may be artifacts in the images (i.e. the image displayed through X2Go may look slightly different than what it would look like on a regular X-Server screen), depending on which algorithm and which compression level you choose. Is that something you're aware of? If you're using fMRI/X-Ray/Mammography/... images displayed through X2Go for clinical purposes (deciding whether a certain patient requires a surgery etc.), you should absolutely make sure that you're using a lossless compression or no compression at all, or else you might be seeing things that aren't actually there, or missing things that are ther= e. Second, a shameless plug advertising our commercial services: X2Go also has a commercial side, where various companies - including my own - offer support contracts with guaranteed response times as well as consultancy and paid-for development work if someone wants to see a bug fixed or a new feature added in a certain time frame. What makes my company special is, IMHO: 1) I'm the current X2Go Project/Community Coordinator, so the development lead and the developers tend to listen to me. 2) As far as I know, we are the only company providing X2Go support that isn't a one-man-show. 3) We sub-contract other developers from the X2Go community on demand, so you only have one person you need to talk to - me - and you will only receive one invoice, even if the task involved several freelance or part-time X2Go developers. Our hourly rate for consultancy work and fixing issues outside of a support contract is 110 EUR. With a support contract, you get guaranteed response times (starting at 400 EUR/month for 24h response time during business hours in the CET/CEST time zone from Monday to Friday, German holidays excluded) and lower hourly rates if you buy a certain amount of hours in advance. Kind Regards, Stefan Baur --=20 BAUR-ITCS UG (haftungsbeschr=E4nkt) Gesch=E4ftsf=FChrer: Stefan Baur Eichen=E4ckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243 --lQgWdr2Tea7uvMWhUdTWxPPAe1fIPJkKa-- --lsjn8mk1u8HEEKMfK8uEK7CVVNbPu7gmH Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJYPW0VAAoJEG7d9BjNvlEZGP8H/15nDBeAkDyszVgpyA1euar9 W3w0FjCBBVNGReXH5LvpB4WOb/zv23AjJwxq5U582GSPqbQq4aSw7ub2+WJZ/a6x MFuyz5gdf7vVjdGsgbopdlyrT9rc6jf9cumEZMvGKCIe660VmuETfwRCd8nDj/hE fDGKx7137GEVlTzIS6GFRrafgNTIZedDHxRF7k9EPgDlQuJbo4P5BPdvlvSGmzil ZWBtdDJCD1ZtCC2zg8zUQaT5T9on0a8tCkhThsGrOE5zlo6lsm+VVKuG24HkBPCO EWz3gQBqFRd5DY1TriukKn/IYMvXpkb/d/49o/5kAJqK5xqCGf6dBziMdyoZLQk= =5822 -----END PGP SIGNATURE----- --lsjn8mk1u8HEEKMfK8uEK7CVVNbPu7gmH--