Mixbus 32C 6 crashes under Linux Debian 10

[ChrisCaracas]

Hi guys !

Since a time, mi Mixbus 32 C V5 and V6 are crashing my XWindows session, sometimes after one hour of work, sometimes after some minutes, and more often when the work session is advanced (more plugins and automations).
Same crashes with version 6.0.652 and 0.697
I have a 6 core AMD64 with 20 Go Ram, NVidia card with nouveau drivers, two screens, XFCE on Debian 10 with KxStudio sources
Seems like an X server problem?
Any help is valuable, thanks !

Here the last lines of an Mixbus-Error.txt :

Failed to find action (2): [Common/attach-console de mixage]
PBD:tacktrace(std::ostream&, int)
ActionManager::get_action(char const*, char const*, bool)
/opt/Mixbus32C-6.0.652/bin/mixbus32c-6.0.652(+0x475d0e) [0x560ee4385d0e]
ArdourWidgets::Tabbable::window_mapped()
Glib::SignalProxyNormal:lot0_void_callback(_GObject*, void*)
g_closure_invoke
/opt/Mixbus32C-6.0.652/lib/libgobject-2.0.so.0(+0x2101b) [0x7fb33f4d901b]
g_signal_emit_valist
g_signal_emit
gtk_widget_map
/opt/Mixbus32C-6.0.652/lib/libgtk-x11-2.0.so.0(+0x31e14e) [0x7fb33e93614e]
/opt/Mixbus32C-6.0.652/lib/libgobject-2.0.so.0(+0xfb74) [0x7fb33f4c7b74]
g_signal_emit_valist
g_signal_emit
gtk_widget_show
gtk_window_present
ArdourWidgets::Tabbable:how_own_window(bool)
ArdourWidgets::Tabbable:et_state(XMLNode const&, int)
/opt/Mixbus32C-6.0.652/bin/mixbus32c-6.0.652(+0x9119bd) [0x560ee48219bd]
/opt/Mixbus32C-6.0.652/bin/mixbus32c-6.0.652(+0x9201d2) [0x560ee48301d2]
Failed to find action (2): [Common/hide-console de mixage]
PBD:tacktrace(std::ostream&, int)
ActionManager::get_action(char const*, char const*, bool)
/opt/Mixbus32C-6.0.652/bin/mixbus32c-6.0.652(+0x475d0e) [0x560ee4385d0e]
ArdourWidgets::Tabbable::window_mapped()
Glib::SignalProxyNormal:lot0_void_callback(_GObject*, void*)
g_closure_invoke
/opt/Mixbus32C-6.0.652/lib/libgobject-2.0.so.0(+0x2101b) [0x7fb33f4d901b]
g_signal_emit_valist
g_signal_emit
gtk_widget_map
/opt/Mixbus32C-6.0.652/lib/libgtk-x11-2.0.so.0(+0x31e14e) [0x7fb33e93614e]
/opt/Mixbus32C-6.0.652/lib/libgobject-2.0.so.0(+0xfb74) [0x7fb33f4c7b74]
g_signal_emit_valist
g_signal_emit
gtk_widget_show
gtk_window_present
ArdourWidgets::Tabbable:how_own_window(bool)
ArdourWidgets::Tabbable:et_state(XMLNode const&, int)
/opt/Mixbus32C-6.0.652/bin/mixbus32c-6.0.652(+0x9119bd) [0x560ee48219bd]
/opt/Mixbus32C-6.0.652/bin/mixbus32c-6.0.652(+0x9201d2) [0x560ee48301d2]
locate took 113778 usecs for 33 tracks = 3448 per track
locate took 237286 usecs for 33 tracks = 7190 per track
mixbus32c-6.0.652: Fatal IO error 11 (Ressource temporairement non disponible) on X server :0.0.

[keefaz]

Any error messages in /var/log/Xorg.0.log ?