[X2Go-Dev] X2Go from Mac to Fedora 31 XkbAdjustGroup (group=<error reading variable: Division by zero

Robert Kudyba rkudyba at fordham.edu
Mon Jan 13 20:59:11 CET 2020 

X2Go works ok with XFCE4 but the menus at the top are all squished
together, and our user likes MATE. He also got KDE to work. Perhaps this is
a keyboard setting again causing this? Below are logs, a GDB, stacktrace,
let me know if I can provide anything else.

x2goserver-4.1.0.3-5.fc31.x86_64, 5.4.8-200.fc31.x86_64

Jan 13 14:06:11 sobolev /usr/bin/x2gostartagent[192047]: successfully
started X2Go Agent session with ID agw-50-1578942369_stDMATE_dp32
Jan 13 14:06:18 sobolev /usr/bin/x2goruncommand[192461]: launching session
with Xsession-x2go mechanism, using STARTUP="mate-session"
Jan 13 14:06:18 sobolev /usr/bin/x2goruncommand[192462]: dbus wrapper
available as /usr/bin/dbus-run-session
Jan 13 14:06:19 sobolev mate-session[192465]: WARNING: keycode1 not existent
Jan 13 14:06:19 sobolev mate-session[192465]: WARNING: keycode2 not existent
Jan 13 14:06:19 sobolev gnome-keyring-daemon[192776]: couldn't access
control socket: /run/user/1201/keyring/control: No such file or directory
Jan 13 14:06:20 sobolev systemd[1]: Starting Hostname Service...
Jan 13 14:06:20 sobolev gnome-keyring-daemon[192776]: The PKCS#11 component
was already initialized
Jan 13 14:06:20 sobolev systemd[1]: Started Hostname Service.
Jan 13 14:06:20 sobolev gnome-keyring-daemon[192776]: The Secret Service
was already initialized
Jan 13 14:06:20 sobolev gnome-keyring-daemon[192776]: The SSH agent was
already initialized
Jan 13 14:06:20 sobolev kernel: traps: x2goagent[192036] trap divide error
ip:55662e2da364 sp:7ffe990d1a90 error:0 in nxagent[55662e1eb000+30a000]
Jan 13 14:06:20 sobolev systemd[1]: Started Process Core Dump (PID
192845/UID 0).
Jan 13 14:06:21 sobolev systemd[1]: Started
dbus-:1.9-org.freedesktop.problems at 6.service.
Jan 13 14:06:21 sobolev python3[192825]: detected unhandled Python
exception in '/usr/bin/dnfdragora-updater'
Jan 13 14:06:21 sobolev systemd[3813]: run-user-1201-gvfs.mount: Succeeded.
Jan 13 14:06:21 sobolev kernel: FS-Cache: Duplicate cookie detected
Jan 13 14:06:21 sobolev kernel: FS-Cache: O-cookie c=00000000faefe89e
[p=000000008cf48cf8 fl=222 nc=0 na=1]
Jan 13 14:06:21 sobolev kernel: FS-Cache: O-cookie d=00000000e228d53d
n=00000000896dcdab
Jan 13 14:06:21 sobolev kernel: FS-Cache: O-key=[10] '040002000801966c4034'
Jan 13 14:06:21 sobolev kernel: FS-Cache: N-cookie c=00000000537a747a
[p=000000008cf48cf8 fl=2 nc=0 na=1]
Jan 13 14:06:21 sobolev kernel: FS-Cache: N-cookie d=00000000e228d53d
n=000000005a823428
Jan 13 14:06:21 sobolev kernel: FS-Cache: N-key=[10] '040002000801966c4034'
Jan 13 14:06:21 sobolev systemd[32023]: run-user-1201-gvfs.mount: Succeeded.
Jan 13 14:06:21 sobolev systemd[12700]: run-user-1201-gvfs.mount: Succeeded.
Jan 13 14:06:21 sobolev systemd[1]: run-user-1201-gvfs.mount: Succeeded.
Jan 13 14:06:22 sobolev abrt-server[193050]: Deleting problem directory
Python3-2020-01-13-14:06:21-192825 (dup of
Python3-2020-01-13-08:40:29-122503)
Jan 13 14:06:22 sobolev systemd-logind[3567]: Session 132 logged out.
Waiting for processes to exit.
Jan 13 14:06:22 sobolev abrt-notification[193208]: Process 122503
(dnfdragora-updater) of user 1201 encountered an uncaught
dbus.exceptions.DBusException exception
Jan 13 14:06:23 sobolev pulseaudio[193026]: Unable to contact D-Bus:
org.freedesktop.DBus.Error.NoServer: Failed to connect to socket
/tmp/dbus-LVmwrXby53: Connection refused
Jan 13 14:06:23 sobolev pulseaudio[193026]: Unable to contact D-Bus:
org.freedesktop.DBus.Error.NoServer: Failed to connect to socket
/tmp/dbus-LVmwrXby53: Connection refused
Jan 13 14:06:23 sobolev pulseaudio[193026]: XOpenDisplay() failed
Jan 13 14:06:23 sobolev pulseaudio[193026]: Failed to load module
"module-x11-publish" (argument: "display=:50"): initialization failed.
Jan 13 14:06:23 sobolev systemd-coredump[192854]: Process 192036
(x2goagent) of user 1201 dumped core.#012#012
Stack trace of thread 192036:
#012#0  0x000055662e2da364 XkbAdjustGroup (nxagent)
#012#1  0x000055662e2da45b XkbComputeDerivedState (nxagent)#012#2
 0x000055662e2d0609 ProcXkbLatchLockState (nxagent)
#012#3  0x000055662e20c048 Dispatch (nxagent
)#012#4  0x000055662e1ef931 main (nxagent)
#012#5  0x00007fef8496f1a3 __libc_start_main (libc.so.6
)#012#6  0x000055662e1efc7e _start (nxagent)
Jan 13 14:06:23 sobolev systemd[1]: systemd-coredump at 6-192845-0.service:
Succeeded.
Jan 13 14:06:24 sobolev abrt-server[193252]: Deleting problem directory
ccpp-2020-01-13-14:06:23.599365-192036 (dup of
ccpp-2020-01-13-08:40:23.341620-121797)
Jan 13 14:06:24 sobolev abrt-notification[193286]: Process 121797 (nxagent)
crashed in XkbAdjustGroup()
Jan 13 14:06:47 sobolev pulseaudio[193026]: GetManagedObjects() failed:
org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible cause:
Jan 13 14:06:47 sobolev pulseaudio[193026]: GetManagedObjects() failed:
org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible cause
s include: the remote application did not send a reply, the message bus
security policy blocked the reply, the reply timeout expired, or the
network connection was broken.
Jan 13 14:06:50 sobolev systemd[1]: systemd-hostnamed.service: Succeeded.
Jan 13 14:06:52 sobolev kernel: Lockdown: pmdakvm: debugfs access is
restricted; see man kernel_lockdown.7
Jan 13 14:07:41 sobolev systemd-logind[3567]: New session 133 of user agw.
Jan 13 14:07:41 sobolev systemd[1]: Starting User Manager for UID 1201...
Jan 13 14:07:41 sobolev systemd[193505]: user at 1201.service: Failed to
determine user credentials: No such process
Jan 13 14:07:41 sobolev systemd[193505]: user at 1201.service: Failed at step
USER spawning /usr/lib/systemd/systemd: No such process
Jan 13 14:07:41 sobolev systemd[1]: user at 1201.service: Failed with result
'protocol'.
Jan 13 14:07:41 sobolev systemd[1]: Failed to start User Manager for UID
1201.
Jan 13 14:07:41 sobolev systemd[1]: Started Session 133 of user agw.
Jan 13 14:07:44 sobolev /usr/sbin/x2gocleansessions[175019]:
agw-50-1578942463_stDMATE_dp32: state file for this session does not exist:
/tmp/.x2go-agw/C-agw-50-1578942463_stDMATE_dp32/state (this can be ignored
during session startups)
Jan 13 14:07:45 sobolev /usr/bin/x2gostartagent[193869]: successfully
started X2Go Agent session with ID agw-50-1578942463_stDMATE_dp32
Jan 13 14:07:46 sobolev /usr/bin/x2goruncommand[194262]: launching session
with Xsession-x2go mechanism, using STARTUP="mate-session"
Jan 13 14:07:46 sobolev /usr/bin/x2goruncommand[194263]: dbus wrapper
available as /usr/bin/dbus-run-session
Jan 13 14:07:47 sobolev mate-session[194266]: WARNING: keycode1 not existent
Jan 13 14:07:47 sobolev mate-session[194266]: WARNING: keycode2 not existent
Jan 13 14:07:47 sobolev gnome-keyring-daemon[194567]: couldn't access
control socket: /run/user/1201/keyring/control: No such file or directory
Jan 13 14:07:47 sobolev systemd[1]: Starting Hostname Service...
Jan 13 14:07:48 sobolev gnome-keyring-daemon[194567]: The PKCS#11 component
was already initialized
Jan 13 14:07:48 sobolev gnome-keyring-daemon[194567]: The Secret Service
was already initialized
Jan 13 14:07:48 sobolev gnome-keyring-daemon[194567]: The SSH agent was
already initialized
Jan 13 14:07:48 sobolev systemd[1]: Started Hostname Service.
Jan 13 14:07:48 sobolev kernel: traps: x2goagent[193858] trap divide error
ip:556295358364 sp:7ffea2cc4a60 error:0 in nxagent[556295269000+30a000]
Jan 13 14:07:48 sobolev systemd[1]: Started Process Core Dump (PID
194779/UID 0).
Jan 13 14:07:49 sobolev systemd[32023]: run-user-1201-gvfs.mount: Succeeded.
Jan 13 14:07:49 sobolev systemd[12700]: run-user-1201-gvfs.mount: Succeeded.
Jan 13 14:07:49 sobolev systemd[3813]: run-user-1201-gvfs.mount: Succeeded.
Jan 13 14:07:49 sobolev systemd[1]: run-user-1201-gvfs.mount: Succeeded.
Jan 13 14:07:49 sobolev systemd[12700]: run-user-1201-doc.mount: Succeeded.
Jan 13 14:07:49 sobolev systemd[32023]: run-user-1201-doc.mount: Succeeded.
Jan 13 14:07:49 sobolev systemd[3813]: run-user-1201-doc.mount: Succeeded.
Jan 13 14:07:49 sobolev systemd[1]: run-user-1201-doc.mount: Succeeded.
Jan 13 14:07:49 sobolev systemd-coredump[194784]: Process 193858
(x2goagent) of user 1201 dumped core.
#012#012Stack trace of thread 193858:
#012#0  0x0000556295358364 XkbAdjustGroup (nxagent)
#012#1  0x000055629535845b XkbComputeDerivedState (nxagent)
#012#2  0x000055629534e609 ProcXkbLatchLockState (nxagent)
#012#3  0x000055629528a048 Dispatch (nxagent)
#012#4  0x000055629526d931 main (nxagent)
#012#5  0x00007fb5686ee1a3 __libc_start_main (libc.so.6)
#012#6  0x000055629526dc7e _start (nxagent)
Jan 13 14:07:49 sobolev systemd[1]: systemd-coredump at 7-194779-0.service:
Succeeded.
Jan 13 14:07:50 sobolev python3[194618]: detected unhandled Python
exception in '/usr/bin/dnfdragora-updater'
Jan 13 14:07:50 sobolev systemd-logind[3567]: Session 133 logged out.
Waiting for processes to exit.
Jan 13 14:07:50 sobolev abrt-server[195048]: Deleting problem directory
Python3-2020-01-13-14:07:49-194618 (dup of
Python3-2020-01-13-08:40:29-122503)
Jan 13 14:07:50 sobolev abrt-notification[195088]: Process 122503
(dnfdragora-updater) of user 1201 encountered an uncaught
dbus.exceptions.DBusException exception
Jan 13 14:07:50 sobolev abrt-server[195075]: Deleting problem directory
ccpp-2020-01-13-14:07:49.883108-193858 (dup of
ccpp-2020-01-13-08:40:23.341620-121797)
Jan 13 14:07:50 sobolev abrt-notification[195131]: Process 121797 (nxagent)
crashed in XkbAdjustGroup()
Jan 13 14:07:52 sobolev kernel: Lockdown: pmdakvm: debugfs access is
restricted; see man kernel_lockdown.7
Jan 13 14:07:54 sobolev systemd[1]: Starting PackageKit Daemon...
Jan 13 14:07:55 sobolev systemd[1]: Started PackageKit Daemon.
Jan 13 14:08:18 sobolev systemd[1]: systemd-hostnamed.service: Succeeded.
Jan 13 14:08:37 sobolev systemd-logind[3567]: New session 134 of user agw.
Jan 13 14:08:37 sobolev systemd[1]: Starting User Manager for UID 1201...
Jan 13 14:08:37 sobolev systemd[195303]: user at 1201.service: Failed to
determine user credentials: No such process
Jan 13 14:08:37 sobolev systemd[195303]: user at 1201.service: Failed at step
USER spawning /usr/lib/systemd/systemd: No such process
Jan 13 14:08:37 sobolev systemd[1]: user at 1201.service: Failed with result
'protocol'.
Jan 13 14:08:37 sobolev systemd[1]: Failed to start User Manager for UID
1201.
Jan 13 14:08:37 sobolev systemd[1]: Started Session 134 of user agw.
Jan 13 14:08:40 sobolev /usr/sbin/x2gocleansessions[175019]:
agw-50-1578942518_stDMATE_dp32: state file for this session does not exist:
/tmp/.x2go-agw/C-agw-50-1578942518_stDMATE_dp32/state (this can be ignored
during session startups)
Jan 13 14:08:41 sobolev /usr/bin/x2gostartagent[195665]: successfully
started X2Go Agent session with ID agw-50-1578942518_stDMATE_dp32
Jan 13 14:08:42 sobolev /usr/bin/x2goruncommand[196050]: launching session
with Xsession-x2go mechanism, using STARTUP="mate-session"
Jan 13 14:08:42 sobolev /usr/bin/x2goruncommand[196051]: dbus wrapper
available as /usr/bin/dbus-run-session
Jan 13 14:08:43 sobolev mate-session[196054]: WARNING: keycode1 not existent
Jan 13 14:08:43 sobolev mate-session[196054]: WARNING: keycode2 not existent
Jan 13 14:08:43 sobolev gnome-keyring-daemon[196365]: couldn't access
control socket: /run/user/1201/keyring/control: No such file or directory
Jan 13 14:08:43 sobolev systemd[1]: Starting Hostname Service...
Jan 13 14:08:44 sobolev gnome-keyring-daemon[196365]: The PKCS#11 component
was already initialized
Jan 13 14:08:44 sobolev gnome-keyring-daemon[196365]: The Secret Service
was already initialized
Jan 13 14:08:44 sobolev gnome-keyring-daemon[196365]: The SSH agent was
already initialized
Jan 13 14:08:44 sobolev systemd[1]: Started Hostname Service.
Jan 13 14:08:44 sobolev kernel: traps: x2goagent[195654] trap divide error
ip:5596520ec364 sp:7ffcc4425230 error:0 in nxagent[559651ffd000+30a000]
Jan 13 14:08:44 sobolev systemd[1]: Started Process Core Dump (PID
196583/UID 0).
Jan 13 14:08:45 sobolev systemd-coredump[196589]: Process 195654
(x2goagent) of user 1201 dumped core.#012#012
Stack trace of thread 195654:
#012#0  0x00005596520ec364 XkbAdjustGroup (nxagent)#012#1
 0x00005596520ec45b XkbComputeDerivedState (nxagent)
#012#2  0x00005596520e2609 ProcXkbLatchLockState (nxagent)
#012#3  0x000055965201e048 Dispatch (nxagent)
#012#4  0x0000559652001931 main (nxagent)
#012#5  0x00007fa9a2e601a3 __libc_start_main (libc.so.6)
#012#6  0x0000559652001c7e _start (nxagent)

Program terminated with signal SIGFPE, Arithmetic exception.
#0  0x0000563e25598364 in XkbAdjustGroup (group=<error reading variable:
Division by zero>, ctrls=ctrls at entry=0x563e25fcab30) at xkbUtils.c:688
688                 group%= ctrls->num_groups;


#0  0x0000563e25598364 in XkbAdjustGroup (group=<error reading variable:
Division by zero>, ctrls=ctrls at entry=0x563e25fcab30) at xkbUtils.c:688
        act = 0
#1  0x0000563e2559845b in XkbComputeDerivedState (xkbi=0x563e25fcdd30) at
xkbUtils.c:714
        state = 0x563e25fcdd42
        ctrls = 0x563e25fcab30
        grp = <optimized out>
#2  0x0000563e2558e609 in ProcXkbLatchLockState (client=0x563e26370690) at
xkb.c:560
        status = <optimized out>
        dev = 0x563e25f971e0
        oldState = {group = 0 '\000', locked_group = 0 '\000', base_group =
0, latched_group = 0, mods = 0 '\000', base_mods = 0 '\000',
          latched_mods = 0 '\000', locked_mods = 0 '\000', compat_state = 0
'\000', grab_mods = 0 '\000', compat_grab_mods = 0 '\000',
          lookup_mods = 0 '\000', compat_lookup_mods = 0 '\000',
ptr_buttons = 0}
        newState = 0x563e25fcdd42
        changed = <optimized out>
        stuff = <optimized out>
#3  0x0000563e254ca048 in Dispatch () at NXdispatch.c:482
        clientReady = 0x563e25f9f4e0
        result = <optimized out>
        client = 0x563e26370690
        nready = 0
        icheck = 0x563e258f26b0 <checkForInput>
        start_tick = 0
        currentDispatch = <optimized out>
#4  0x0000563e254ad931 in main (argc=15, argv=0x7ffc27f81108,
envp=<optimized out>) at main.c:353
        i = <optimized out>
        xauthfile = <optimized out>
        alwaysCheckForInput = {0, 1}



running as X2Go Agent

NXAGENT - Version 3.5.99.20

Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com)
Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder at phoca-gmbh.de>
Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel at das-netzwerkteam.de>
Copyright (c) 2014-2016 Ulrich Sibiller <uli42 at gmx.de>
Copyright (c) 2014-2016 Mihai Moldovan <ionic at ionic.de>
Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com)
See https://github.com/ArcticaProject/nx-libs for more information.

Info: Agent running with pid '199943'.
Session: Starting session at 'Mon Jan 13 14:13:04 2020'.
Info: Proxy running in client mode with pid '199943'.
Info: Using errors file
'/tmp/.x2go-agw/C-agw-50-1578942782_stDKDE_dp32/session.log'.
Info: Using stats file
'/tmp/.x2go-agw/C-agw-50-1578942782_stDKDE_dp32/C-agw-50-1578942782_stDKDE_dp32/stats'.
Loop: WARNING! Unrecognized session type 'unix-kde-depth_32'. Assuming
agent session.
Warning: Unrecognized session type 'unix-kde-depth_32'. Assuming agent
session.
Info: Waiting for connection from 'localhost' on socket 'tcp:*:45376'.
Info: Accepted connection from '127.0.0.1'.
Info: Connection with remote proxy completed.
Info: Using ADSL link parameters 1408/24/1/0.
Info: Using agent parameters 5000/10/50/0/0.
Info: Using cache parameters 4/4096KB/8192KB/8192KB.
Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_32'.
Info: Using ZLIB data compression 1/1/32.
Info: Using ZLIB stream compression 4/4.
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: Using alpha channel in render extension.
Info: Not using local device configuration changes.
Warning: Cannot read keystroke file
'/u/sobolev/agw/.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'.
Current 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
Warning: Failed to create keyboard blocking directory
'/u/sobolev/agw/.x2go/C-agw-50-1578942782_stDKDE_dp32/keyboard': File exists
Session: Terminating session at 'Mon Jan 13 14:13:06 2020'.
Info: Waiting the cleanup timeout to complete.
Session: Session terminated at 'Mon Jan 13 14:13:07 2020'.

error opening security policy file /usr/lib64/xserver/SecurityPolicy
FreeFontPath: FPE "/usr/share/nx/fonts/misc/" refcount is 2, should be 1;
fixing.

nx/nx,link=adsl,pack=16m-jpeg-9,limit=0,root=/tmp/.x2go-agw/C-agw-50-1578942782_stDKDE_dp32,cache=8M,images=32M,type=unix-kde-depth_32,id=agw-50-1578942782_stDKDE_dp32,cookie=b1dfea11dbd712b2994781945d98d508,errors=/tmp/.x2go-agw/C-agw-50-1578942782_stDKDE_dp32/session.log,kbtype=null/null,geometry=1280x1024,xinerama=1,resize=1,fullscreen=0,accept=localhost,listen=45376,clipboard=both,client=linux,menu=0,state=/tmp/.x2go-agw/C-agw-50-1578942782_stDKDE_dp32/state:50

I did go ahead and create bugs in Bugzilla from ABRT:
https://bugzilla.redhat.com/show_bug.cgi?id=1790607
https://bugzilla.redhat.com/show_bug.cgi?id=1790606
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