[X2Go-Dev] Bug#1312: Ubuntu 16.04 LTS Qt bug

[e8dude]

Same here. Upgraded my Ubuntu 16.04 LTS. After the upgrade only some of my QT apps work. Stipend wallet works but Apollon and Deviant do not open at all.

Since the update I'm also having high CPU usage in Openbox. Logs are filliing up with Print error while x2go is running. If I close x2go CPU usage is normal and error reporting stops.

Openbox-Message: Requested key "Print" does not exist on the display
Openbox-Message: Requested key "Print" does not exist on the display
Openbox-Message: Requested key "Print" does not exist on the display
Openbox-Message: Requested key "Print" does not exist on the display
Openbox-Message: Requested key "Print" does not exist on the display
XIO: fatal IO error 0 (Success) on X server ":50"
after 280 requests (278 known processed) with 0 events remaining.
Openbox-Message: Requested key "Print" does not exist on the display
Openbox-Message: Requested key "Print" does not exist on the display
Openbox-Message: Requested key "Print" does not exist on the display
Openbox-Message: Requested key "Print" does not exist on the display

[e8dude]

XSession-x2go: X session started for root at Fri Aug 10 00:53:40 UTC 2018
xhost: must be on local machine to add or remove hosts.
localuser:root being added to access control list
xhost: must be on local machine to add or remove hosts.
dbus-update-activation-environment: setting TERM=dumb
dbus-update-activation-environment: setting SHELL=/bin/bash
dbus-update-activation-environment: setting SSH_CLIENT=xxxxxxxxx
dbus-update-activation-environment: setting QT_LINUX_ACCESSIBILITY_ALWAYS_ON=1
dbus-update-activation-environment: setting X2GO_SESSION=root-50-1533862411_stDOPENBOX_dp32
dbus-update-activation-environment: setting X2GO_AGENT_PID=2339
dbus-update-activation-environment: setting USER=root
dbus-update-activation-environment: setting QT_ACCESSIBILITY=1
dbus-update-activation-environment: setting SSH_AUTH_SOCK=/root/.x2go/C-root-50-1533862411_stDOPENBOX_dp32/ssh-agent.PID
dbus-update-activation-environment: setting PULSE_CLIENTCONFIG=/root/.x2go/C-root-50-1533862411_stDOPENBOX_dp32/.pulse-client.conf
dbus-update-activation-environment: setting PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
dbus-update-activation-environment: setting MAIL=/var/mail/root
dbus-update-activation-environment: setting PWD=/root
dbus-update-activation-environment: setting LANG=en_US.UTF-8
dbus-update-activation-environment: setting QT_GRAPHICSSYSTEM=native
dbus-update-activation-environment: setting XSESSION_EXEC=openbox-session
dbus-update-activation-environment: setting HOME=/root
dbus-update-activation-environment: setting SHLVL=4
dbus-update-activation-environment: setting LOGNAME=root
dbus-update-activation-environment: setting DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-O72i0ObC0V,guid=3ac317e9aef52623e8dude291c79955b6ce213
dbus-update-activation-environment: setting XDG_DATA_DIRS=/usr/local/share:/usr/share:/var/lib/snapd/desktop
dbus-update-activation-environment: setting SSH_CONNECTION=xxxxxxxxxxxxxxxx
dbus-update-activation-environment: setting XDG_RUNTIME_DIR=/run/user/0
dbus-update-activation-environment: setting DISPLAY=:50
dbus-update-activation-environment: setting STARTUP=/usr/bin/env LD_LIBRARY_PATH= openbox-session
dbus-update-activation-environment: setting XAUTHORITY=/root/.Xauthority
dbus-update-activation-environment: setting _=/usr/bin/dbus-update-activation-environment
dbus-update-activation-environment: warning: error sending to systemd: org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1
Openbox-Message: Invalid button "A-Left" in mouse binding
Openbox-Message: Invalid button "A-Middle" in mouse binding
Openbox-Message: Invalid button "A-Up" in mouse binding
Openbox-Message: Invalid button "A-Down" in mouse binding
Openbox-Message: Invalid button "C-A-Up" in mouse binding
Openbox-Message: Invalid button "C-A-Down" in mouse binding
Openbox-Message: Invalid button "A-Up" in mouse binding
Openbox-Message: Invalid button "A-Down" in mouse binding
No composite extension
** (process:2627): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
Activating service name='org.a11y.atspi.Registry'
warning : (/build/buildd/cairo-dock-3.4.1/src/implementations/cairo-dock-X-utilities.c:cairo_dock_support_X_extension:729)
XComposite extension not available.
warning : (/build/buildd/cairo-dock-3.4.1/src/implementations/cairo-dock-egl.c:gldi_register_egl_backend:232)
Cairo-Dock was not built with EGL support
Successfully activated service 'org.a11y.atspi.Registry'
warning : (/build/buildd/cairo-dock-3.4.1/src/implementations/cairo-dock-glx.c:_initialize_opengl_backend:129)
couldn't find an appropriate visual, trying to get one without Stencil buffer
(it may cause some little deterioration in the rendering) ...
warning : (/build/buildd/cairo-dock-3.4.1/src/implementations/cairo-dock-glx.c:_initialize_opengl_backend:188)
couldn't find a suitable GLX Visual, OpenGL can't be used.
(sorry to say that, but your graphic card and/or its driver is crappy)
============================================================================
Cairo-Dock version : 3.4.1
Compiled date : Feb 19 2015 18:17:26
Built with GTK : 3.14
Running with OpenGL: 0
============================================================================
XIO: fatal IO error 0 (Success) on X server ":50"
after 280 requests (278 known processed) with 0 events remaining.