Fix GUI autologin without tty autologin

Use Raspberry Pi's GUI-only autologin path after first-boot user setup so GUI images do not leave tty1 autologin enabled, and add a pre-post-boot E2E hook point for distros to assert boot state before test setup mutates it.

Document the raspi-config do_autologin bitmask so the GUI-only value is clear.

Author: guysoft

src/distro_testing/scripts/entrypoint.sh

@@ -63,10 +63,32 @@ if [ "$SSH_WAIT_RC" -ne 0 ]; then
     exit 1
 fi
 
+# Run distro-specific boot-state checks before post-boot hooks mutate the image
+if [ -x /test/hooks/post-ssh.sh ]; then
+    echo ""
+    echo "--- Step 3b: Post-SSH checks ---"
+    set +e
+    if [ -n "$ARTIFACTS_DIR" ]; then
+        /test/hooks/post-ssh.sh localhost "$SSH_PORT" "$ARTIFACTS_DIR"
+    else
+        /test/hooks/post-ssh.sh localhost "$SSH_PORT"
+    fi
+    POST_SSH_RC=$?
+    set -e
+    if [ "$POST_SSH_RC" -ne 0 ]; then
+        echo "Post-SSH hook failed"
+        if [ -n "$ARTIFACTS_DIR" ]; then
+            cp "$LOG_FILE" "$ARTIFACTS_DIR/qemu-boot.log" 2>/dev/null || true
+            echo "$POST_SSH_RC" > "$ARTIFACTS_DIR/exit-code"
+        fi
+        exit "$POST_SSH_RC"
+    fi
+fi
+
 # Run distro-specific post-boot setup (e.g. install packages, restart services)
 if [ -x /test/hooks/post-boot.sh ]; then
     echo ""
-    echo "--- Step 3b: Post-boot setup ---"
+    echo "--- Step 3c: Post-boot setup ---"
     /test/hooks/post-boot.sh localhost "$SSH_PORT" || echo "WARNING: post-boot hook failed"
 fi
 

src/modules/gui/filesystem/opt/scripts/update_lightdm_conf

@@ -1,6 +1,39 @@
 #!/bin/bash
+set -e
+
+LIGHTDM_CONF=/etc/lightdm/lightdm.conf
+TTY1_AUTOLOGIN_CONF=/etc/systemd/system/getty@tty1.service.d/autologin.conf
+
+set_lightdm_option() {
+    local key="$1"
+    local value="$2"
+
+    if grep -Eq "^#?${key}=" "${LIGHTDM_CONF}"; then
+        sed -i -E "s|^#?${key}=.*|${key}=${value}|" "${LIGHTDM_CONF}"
+    else
+        printf '%s=%s\n' "${key}" "${value}" >> "${LIGHTDM_CONF}"
+    fi
+}
+
 if [ ! -f /etc/updated_lightdm_conf ]; then
-    sed -i 's/UID_1000_PLACEHOLDER/'$(id -nu 1000)'/g' /etc/lightdm/lightdm.conf
+    gui_user="$(id -nu 1000)"
+
+    sed -i "s/UID_1000_PLACEHOLDER/${gui_user}/g" "${LIGHTDM_CONF}"
+
+    # raspi-config do_autologin uses a bitmask: 1=TTY, 2=GUI, 3=both.
+    # FullPageOS needs GUI autologin without opening a local tty shell.
+    if ! SUDO_USER="${gui_user}" raspi-config nonint do_autologin 2; then
+        rm -f "${TTY1_AUTOLOGIN_CONF}"
+        rmdir --ignore-fail-on-non-empty "$(dirname "${TTY1_AUTOLOGIN_CONF}")" 2>/dev/null || true
+        set_lightdm_option autologin-user "${gui_user}"
+    fi
+
+    set_lightdm_option user-session guisession
+    set_lightdm_option autologin-session guisession
+    set_lightdm_option autologin-user "${gui_user}"
+
+    systemctl daemon-reload || true
+    systemctl try-restart getty@tty1.service || true
+
     touch /etc/updated_lightdm_conf
-    # sudo shutdown -r now
 fi

src/modules/gui/filesystem/root_init/etc/systemd/system/update_lightdm_conf.service

@@ -1,5 +1,6 @@
 [Unit]
 Description=on first boot set up the user name auto login in lightdm.service
+Before=lightdm.service
 [Service]
 ExecStart=/opt/custompios/scripts/update_lightdm_conf
 Type=oneshot