diff --git a/contrib/profile.sh b/contrib/profile.sh
new file mode 100644
index 0000000..d16291f
--- /dev/null
+++ b/contrib/profile.sh
@@ -0,0 +1,8 @@
+# To avoid potential situation where cdm(1) crashes on every TTY, here we
+# default to execute cdm(1) on tty1 only, and leave other TTYs untouched.
+if [[ "$(tty)" == '/dev/tty1' ]]; then
+    [[ -n "$STDM_SPAWN" ]] && return
+    # Avoid executing cdm(1) when X11 has already been started.
+    STDM_SPAWN=true exec stdm
+fi
+