Whenever running bitbake stops all application and locks the system

Question

When ever I am running "bitbake machine" command in yocto after certain time the the system is stopping the GNOME and closing all the applications eventually it re-directs to login page.I have attavhed my syslog here. `gnome-session[12517]: (polkit-gnome-authentication-agent-1:12657): Gdk-WARNING **: polkit-gnome-authentication-agent-1: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.

org.a11y.atspi.Registry[12461]: XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0"

org.a11y.atspi.Registry[12461]: after 2871 requests (2871 known processed) with 0 events remaining.

gnome-session[12517]: (unity-fallback-mount-helper:12655): Gdk-WARNING **: unity-fallback-mount-helper: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.

gnome-session[12517]: (update-notifier:12906): Gdk-WARNING **: update-notifier: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.

gnome-session[12517]: (nm-applet:12653): Gdk-WARNING **: nm-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.

org.gnome.Terminal[12386]: (gnome-terminal-server:12811): Gdk-WARNING **: gnome-terminal-server: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.

gnome-session[12517]: (gnome-software:12654): Gdk-WARNING **: gnome-software: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.

gnome-session[12517]: (nautilus:12659): Gdk-WARNING **: nautilus: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. kernel: [172165.093743] show_signal_msg: 12 callbacks suppressed kernel: [172165.093745] Chrome_~dThread[11021]: segfault at 0 ip 00007fa42a7178c6 sp 00007fa428814af0 error 6 in libxul.so[7fa4298de000+5826000]

gnome-session[12517]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory

gnome-session[12517]: Unable to init server: Could not connect: Connection refused

gnome-session[12517]: (polkit-gnome-authentication-agent-1:24599): Gtk-WARNING **: cannot open display: :0

pulseaudio[24610]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() returned true pulseaudio[24604]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() returned true `

Answer 1

Unfortunately I still do not know the cause of the logout issue, so I woudn't consider this a complete solution. In the meantime, I was able to complete a full build yesterday! I ran the full build while limiting the number of concurrent bitbake tasks allowed to 1. You can modify the number of concurrent tasks with the BB_NUMBER_THREADS variable in build/conf/local.conf:

BB_NUMBER_THREADS = "1"

Once the full build completes, I stop experiencing this issue with subsequent or incremental builds for the same image. This isn't a permanent solution, but a quick way to get unblocked. I'll report back here if I learn anything more about this issue.