[X2Go-User] nxagentReconnectFailedFonts: does anyone have a solution?
Michael Ashley
m.ashley at unsw.edu.au
Sat Feb 27 02:26:24 CET 2021
Hi Uli,
I can't easily reproduce the problem since I have to travel to a different location to use the computer that triggered the problem, so I haven't been able to try your fix.
I will upgrade to 3.5.99.26.
Regards, Michael
On Sat, Feb 27, 2021 at 12:09:39AM +0100, Ulrich Sibiller wrote:
> As you can see the reconnect goes on after the fonts stuff. So have
> you tried my suggested fix?
>
> Please ignore the kde stuff, that is irrelevant and caused by some
> default setting in x2go.
>
> Please try upgrading to 3.5.99.26, there are more than 380 patches
> included since 3.5.99.23...
>
> Uli
>
> On Fri, Feb 26, 2021 at 11:26 PM Michael Ashley <m.ashley at unsw.edu.au> wrote:
> >
> > Hi Uli,
> >
> > Thanks for your quick response.
> >
> > The nxagent version on the server is 3.5.99.23. The server is an ancient Ubuntu 14.04LTS system. I do have /usr/bin/nxdialog.
> >
> > Here is my full session.log with the failed font problem:
> >
> > Session: Session resumed at 'Wed Feb 24 10:53:13 2021'.
> > Info: Screen [0] resized to geometry [1920x1170] fullscreen [0].
> > Info: Screen [0] resized to geometry [1920x1170] fullscreen [0].
> > Info: Screen [0] resized to geometry [1853x1145] fullscreen [0].
> > Info: Screen [0] resized to geometry [1919x1145] fullscreen [0].
> > Info: Screen [0] resized to geometry [1853x1145] fullscreen [0].
> > Session: Suspending session at 'Wed Feb 24 15:38:52 2021'.
> > Info: Waiting the cleanup timeout to complete.
> > Session: Session suspended at 'Wed Feb 24 15:38:53 2021'.
> > Session: Resuming session at 'Wed Feb 24 15:38:55 2021'.
> > Info: Proxy running in client mode with pid '3034'.
> > Info: Using errors file '/tmp/.x2go-mcba/C-mcba-50-1610482047_stDXFCE_dp24/session.log'.
> > Info: Using stats file '/tmp/.x2go-mcba/C-mcba-50-1610482047_stDXFCE_dp24/C-mcba-50-1610482047_stDXFCE_dp24/stats'.
> > Loop: WARNING! Unrecognized session type 'unix-kde-depth_24'. Assuming agent session.
> > Warning: Unrecognized session type 'unix-kde-depth_24'. Assuming agent session.
> > Info: Waiting for connection from 'localhost' on socket 'tcp:*:40350'.
> > Info: Accepted connection from '127.0.0.1'.
> > Info: Connection with remote proxy completed.
> > Info: Using WAN link parameters 1408/24/1/0.
> > Info: Using agent parameters 5000/5/50/0/0.
> > Info: Using cache parameters 4/4096KB/8192KB/8192KB.
> > Info: Using pack method '16m-png-9' with session 'unix-kde-depth_24'.
> > Info: Using ZLIB data compression 1/1/32.
> > Info: Using ZLIB stream compression 1/1.
> > Info: No suitable cache file found.
> > Info: Listening to X11 connections on display ':50'.
> > Info: Established X client connection.
> > Info: Using shared memory parameters 1/1/0/0K.
> > Info: Not using local device configuration changes.
> > nxagentReconnectFailedFonts: WARNING! Font server tunneling not retrieved.
> > nxagentReconnectSession: WARNING! Unable to retrieve all the fonts currently in use. Missing fonts have been replaced.
> > Info: keyboard blocking directory created: '/home/mcba/.x2go/C-mcba-50-1610482047_stDXFCE_dp24/keyboard'
> > Info: Keycode conversion is off
> > Info: re-reading keystrokes configuration
> > Warning: Cannot read keystroke file '/home/mcba/.x2go/config/keystrokes.cfg'.
> > Info: using keystrokes file '/etc/x2go/keystrokes.cfg'
> > Info: ignoring unknown keystroke action 'debug_tree'.
> > Info: ignoring unknown keystroke action 'regions_on_screen'.
> > Info: ignoring unknown keystroke action 'test_input'.
> > Info: ignoring unknown keystroke action 'deactivate_input_devices_grab'.
> > Currently known keystrokes:
> > close_session : Ctrl+Alt+t
> > switch_all_screens : Ctrl+Alt+f
> > minimize : Ctrl+Alt+m
> > resize : Ctrl+Alt+r
> > defer : Ctrl+Alt+e
> > ignore : Ctrl+Alt+BackSpace
> > force_synchronization : Ctrl+Alt+j
> > fullscreen : Ctrl+Shift+Alt+f
> > viewport_move_left : Ctrl+Shift+Alt+Left
> > viewport_move_up : Ctrl+Alt+Up
> > viewport_move_right : Ctrl+Alt+Right
> > viewport_move_down : Ctrl+Alt+Down
> >
> > I don't know why there are references to KDE. I am using xfce.
> >
> > Regards,
> > Michael
> >
> > On Fri, Feb 26, 2021 at 10:43:40PM +0100, Ulrich Sibiller wrote:
> > > On more thing: You can also install the nxdialog package and point the
> > > NX_CLIENT variable to /usr/bin/nxdialog. This way you will even see
> > > the dialogs! This is how it was intended from the beginning and it is
> > > the correct way but unfortunately nobody has fixed that in x2go yet -
> > > for years.
> > >
> > > Uli
> > >
> > > On Fri, Feb 26, 2021 at 10:40 PM Ulrich Sibiller <uli42 at gmx.de> wrote:
> > > >
> > > > Honestly I have never seen this. Interestingly when those messages
> > > > appear it means that the system will NOT stop the reconnect but go
> > > > on:
> > > >
> > > > if (!nxagentReconnectAllFonts(reconnectLossyLevel[FONT_STEP]))
> > > > {
> > > > if (!nxagentReconnectFailedFonts(reconnectLossyLevel[FONT_STEP]))
> > > > {
> > > > failedStep = FONT_STEP;
> > > > goto nxagentReconnectError;
> > > > }
> > > > else
> > > > {
> > > > #ifdef WARNING
> > > > fprintf(stderr, "nxagentReconnectSession: WARNING! Unable to
> > > > retrieve all the fonts currently in use. "
> > > > "Missing fonts have been replaced.\n");
> > > > #endif
> > > >
> > > > nxagentLaunchDialog(DIALOG_FONT_REPLACEMENT);
> > > > }
> > > > }
> > > >
> > > > What version of the nxagent package do you have on the server? And
> > > > what distribution do you have on the server? Please post the lines
> > > > before and after the messages you posted (from
> > > > /tmp/.x2go-<user>/C..../session.log)
> > > >
> > > > Update: after thinking for some time you probably suffer from a bug
> > > > that is old indeed: dialogs are displayed using the binary that is
> > > > referred to by the NX_CLIENT variable. This variable is set wrong
> > > > inside x2go and will call a binary that suspends the session. So to
> > > > fix this
> > > > do the following on the server (as I don't know what distribution you
> > > > are using I do not know where the x2gosuspendagent binary resides, so
> > > > please adapt the path accordingly):
> > > > 1. mv /usr/bin/x2gosuspendagent /usr/bin/x2gosuspendagent.orig
> > > > 2. ln -s /usr/bin/true /usr/bin/x2gosuspendagent
> > > >
> > > > Unfortunately you will have to fix it again after an update of the x2go stuff.
> > > >
> > > > Alternatively you can change the line in x2gosuspendagent that sets
> > > > the NX_CLIENT variable. But this will only affect future sessions
> > > > while above change will also work for running sessions. You will have
> > > > to fix this after an update again, too.
> > > >
> > > > Hope that helps,
> > > >
> > > > Uli
> > > >
> > > >
> > > > On Fri, Feb 26, 2021 at 10:07 PM Michael Ashley <m.ashley at unsw.edu.au> wrote:
> > > > >
> > > > > Hi folks,
> > > > >
> > > > > Last week I connected to a long-running x2go session using a different computer than I normally do. It worked fine. But later that day when I returned to my usual computer, I ran into the bug where the session would start up, but then disconnect within about a second, with the error messages:
> > > > >
> > > > > > nxagentReconnectFailedFonts: WARNING! Font server tunneling not retrieved.
> > > > > > nxagentReconnectSession: WARNING! Unable to retrieve all the fonts currently in use. Missing fonts have been replaced.
> > > > >
> > > > > A google search shows that this bug was reported 7 years ago, but no solution appears to be forthcoming, apart from trying to adding fonts. But with over 1000 fonts on the server, I have no idea how to find which ones need adding.
> > > > >
> > > > > Are there any ideas out there for how to address this problem? It is certainly frustrating to be unable to connect to a running x2go session, and having to terminate it on the server.
> > > > >
> > > > > Regards,
> > > > > Michael
> > > > > _______________________________________________
> > > > > x2go-user mailing list
> > > > > x2go-user at lists.x2go.org
> > > > > https://lists.x2go.org/listinfo/x2go-user
> >
--
Professor Michael Ashley Department of Astrophysics
University of New South Wales http://www.phys.unsw.edu.au/~mcba
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