-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Am 12.01.2015 um 18:07 schrieb Peter Brodsky <brod...@apl.washington.edu>:
> Looking ahead: The operational setup is the control system running > on the Mint machine with a Windows box displaying sonar and video > data. I want to put the display for the former on the latter; thus > X2Go. I've got a GB switch between the 2 machines. > Now: My user account on the Linux side has no password (before you > have a heart attack about security, remember this is a completely > isolated network). I boot up and the desktop for that account > simply appears. And brings up the control display panel with it. > The sub pilot doesn't want to mess around with logging in, etc. X2Go will not work with no authentication at all. However, you can use a SSH Public/Private Key pair to authenticate, and assign no password to the private key. That way, you can automate the login and make things work with a simple double-click on the icon. > Given that - is there a particular order to which I should fire up > the X2Go client vs. booting up the linux server? The server should be up and running first. You can test that with a batch script in which you do nc -z ip.of.ser.ver 22 (assuming you're using Port 22 for ssh/X2Go, as usual) nc is available for Windows just as well as for Linux. the -z tells it to connect to the given IP and port, and quit immediately. The error code of nc can then be used to determine whether the connection was successful. Whil unsuccessful, make the script wait a few seconds (Microsoft's recommended way to make a machine wait 1 second is to send a single ping to 127.0.0.1, I kid you not), then try again. Once successful, continue in the script and launch x2goclient. You will be happy to hear that with x2goclient, it is possible to specify a command/session to be run automatically at startup. You should check out the various command line arguments by running x2goclient.exe in a cmd.exe window and specifying "--help" as the parameter. I'm pretty sure there are a few parameters that you will want to try out. If you don't want to go down the batch route, I could write a little AutoIt script for you that provides a GUI wrapper for a small fee (maybe 65-75 USD - and the source would be public under GPL). > AND - if I also have a monitor (& keyboard & mouse) on the linux > server - what happens? (Thinking about, say, Windows Remote > Desktop - I think I recall the console display just going away when > a remote user brought it up - but I can't remember). You have to differentiate here. Windows' RDP client mstsc.exe is a tool that can be used for two things. 1) You can use it to connect to another client computer runnung a client version of Windows, in which case it will lock the local display of the remote machine, as you only paid for a single-seat license. 2) You can use it to connect to a Windows Terminal Server, which can run multiple GUI Sessions of various users simultaneously, that do not interfere with the local display of that server, as the Windows Terminal Server licensing model is designed for multi-seat use, even concurrent, independent sessions by the same user. X2Go is technically more comparable to 2), only that you don't have to buy licenses, as we're strictly GPL. (IIRC, it is *possible* to mirror/take over the local display session with X2Go, too, but this is not the default, and judging from how you phrased your question, I take it this also is not what you want.) > PS: Years ago I used a commercial product called Exceed, from a > Canadian company called Hummingbird. Is X2GO something like that? My last encounter with Hummingbird also dates back a few years (ca. 2009). At my former employer, we mostly used text-based mainframe access - - Telnet 3270 emulation - using a competitor's product called "Attachmate Extra!". But basically, if you'd paint a Venn diagram of Hummingbird Exceed and X2GoClient, the only overlap would be "It has an X server that can be accessed over the network". X2Go adds compression and efficiency (roundtrip elimination) to the networking layer of X. Though with merely two computers on a Gigabit link, you won't really notice that. I'm surprised you're even using a switch, you could probably just hook them up directly, Gigabit cards do Auto-MDI/MDI-X, so you don't need a special crossover cable - getting the switch "out of the loop" would reduce complexity (eliminating a component that could possibly fail in the worst possible moment), which I think is something you will prefer in a man-rated submarine. Also, we basically offer the entire ssh login/X-forwarding/tunneling of sound, file and printer sharing stuff in one nice GUI client. With the Hummingbird Exceed and all comparable solutions I know, you had to do all those steps manually, like, open a command prompt window to ssh into the server, start your local X server, run the remote application in the ssh session, realize you forgot to specify -X when making the connection, log out and in again, ... plus it was sluggish as hell given the network bandwidth we had back then (16 MBit on Token Ring and 100MBit on Ethernet when at the main site, 128kBit - 2MBit from a branch office). Of course, there's way more to X2Go - check out http://wiki.x2go.org/doku.php/doc:newtox2go for an introdution - but these should be the key points relevant for your use case. - -Stefan - -- 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 v2.0.22 (MingW32) iQEcBAEBAgAGBQJUtACIAAoJEG7d9BjNvlEZcRAH/igXrjrB0maKopOoqHYR2l+u pM6gGlAdbvZZ8sRgZebdGCaeGLTD081CoYP1urmj7MssPTBphWFyb2OLirKHCzA0 uw8YjxSL46ezWDPnyfSfn/hyslrSvsOfuvjN0cqh1mZLO2FAqUPMZRlIXl67s3xT 6BbeB3G04pjAkFCJdugwX8UM/BbY6qfp0wa5eaakx1PFPvHzrCeIH7vVjOK/8bho pFu/+RDoZSE0CAnIh2Dng885D7xi9lY7VzkXWesRptcaYfCokGWI8zYLOl8LlEG8 ZOrKBPEwFX1tXspHGSxbTg4Q2ejwXpmgahQHmpc8ADU3NPhtLPvQOTla03d7db8= =SBkz -----END PGP SIGNATURE----- _______________________________________________ x2go-user mailing list x2go-user@lists.x2go.org http://lists.x2go.org/listinfo/x2go-user
