Hello,
I run x2go server 4.0.1.15 on Arch Linux x86_64 xorg-server 1.15.1 x2go-agent 3.5.0.24-1 nxagent 3.5.0.24-1
and x2goclient V.4.0.2.0 (Qt - 4.8.5) on Windows 7 with internal X server. (Installed without admin privileges and running in portable mode.)
Anyway, the issue described below happens for many months now, thus it is not related to those particular versions.
After connection to the server, the desktop session (KDE) works just fine. However, once I start using apps (usually Firefox, Evolution, Smartgit, digiKam, Dolphin, etc.), the screen behaves like there are timeouts or short drops in connection.
The screen may freeze for several seconds completely, it does not react on clicks, keyboard typing, though it still remembers the actions and "replays" them once the desktop resurrects: e.g. the clock widget on task bar quikly displays the seconds timer changes, like in an accelerated movie, then it freezes again.
Other times, it just becomes horribly slow - slowly redrawing.
A temporary solution is to close the app window and start it again. It usually helps better to disconnect (logout) and connect again. Suspending and resuming the session from the client does not help at all.
Note that these issues are not caused by a bad connection per se: I can open another SSH connection from cygqin and transfer big files back and forth w/o problems at full speed (cca 2 Mbps up/down). SSH typing response is also quick, hence latency should not be an issue either.
Logs on the server (syslog, x2go log level debug, CLI output of the applications) do not show anything interesting at all.
I assume it may be due to the often discussed issues with applications being compiled against up-to-date X libs, while nxagent still uses the old X server.
I have tried to use x2goclient on Ubuntu 12.04 (armhf) for some time and it seems it runs stable, w/o the issues.
Is there anything I can do at all to improve the user experience? Or at least to debug the issues?
regards, Milan
-- http://milan-knizek.net/ About linux and photography (Czech only) O linuxu a fotografování
Am 12.06.2014 15:05, schrieb Milan Knížek:
Is there anything I can do at all to improve the user experience? Or at least to debug the issues?
It might be that some client-side application is getting in the way of X2Go. Do check that indexing is disabled for all directories where X2Go data is stored (not only the application folder, but also the settings etc.), and you might want to check which virus scanner is running - possibly defining exceptions for X2Go files and directories in it, so it doesn't attempt to scan there (which might lock and thus slow access to cached data, AFAIR - it's been a while since I had to deal with issues like that).
-Stefan
Stefan Baur píše v Čt 12. 06. 2014 v 15:10 +0200:
Am 12.06.2014 15:05, schrieb Milan Knížek:
Is there anything I can do at all to improve the user experience? Or at least to debug the issues?
It might be that some client-side application is getting in the way of X2Go. Do check that indexing is disabled for all directories where X2Go data is stored (not only the application folder, but also the settings etc.), and you might want to check which virus scanner is running - possibly defining exceptions for X2Go files and directories in it, so it doesn't attempt to scan there (which might lock and thus slow access to cached data, AFAIR - it's been a while since I had to deal with issues like that).
Good idea, I'll try to look into it.
Milan
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Milan Knížek -
Stefan Baur