🐛 fix: fix: resolve session loop and keyboard layout issues in live session

startbiglive:
- Add exec to all session starters to prevent fallthrough to
  systemctl restart, which caused an infinite login loop when
  cinnamon-session crashed due to D-Bus not being ready
- Add _wait_for_user_session() to wait up to 60s for user manager
  and D-Bus session bus before launching desktop session
- Guard language exports with file existence check

services.py:
- Restart/stop jamesdsp-autostart.service via systemctl --user when
  enabling/disabling JamesDSP, fixing the service not starting because
  it was stuck in failed state from earlier crash loops

Author: talesam

biglinux-livecd/usr/bin/startbiglive

@@ -113,12 +113,14 @@ wait
 #-------------------------------------------------------------------------------
 # Apply language and locale settings from user selection
 #-------------------------------------------------------------------------------
-export LANGUAGE=$(</tmp/big_language).UTF-8
-export LANG=$(</tmp/big_language).UTF-8
-export LC_MESSAGES=$(</tmp/big_language).UTF-8
-export LC_ALL=$(</tmp/big_language).UTF-8
-echo "$(</tmp/big_language)" > "$HOME/.config/user-dirs.locale"
-echo -e "[Formats]\nLANG=$(</tmp/big_language).UTF-8" > "$HOME/.config/plasma-localerc"
+if [[ -f /tmp/big_language ]]; then
+    export LANGUAGE=$(</tmp/big_language).UTF-8
+    export LANG=$(</tmp/big_language).UTF-8
+    export LC_MESSAGES=$(</tmp/big_language).UTF-8
+    export LC_ALL=$(</tmp/big_language).UTF-8
+    echo "$(</tmp/big_language)" > "$HOME/.config/user-dirs.locale"
+    echo -e "[Formats]\nLANG=$(</tmp/big_language).UTF-8" > "$HOME/.config/plasma-localerc"
+fi
 
 #-------------------------------------------------------------------------------
 # Create user directories and installer shortcut on desktop
@@ -130,30 +132,52 @@ chmod +x "$XDG_DESKTOP_DIR/calamares-biglinux.desktop"
 
 cd ~
 
+#-------------------------------------------------------------------------------
+# Wait for user manager and D-Bus session bus to be ready
+# This prevents cinnamon-session/gnome-session from crashing due to missing D-Bus
+#-------------------------------------------------------------------------------
+_wait_for_user_session() {
+    local max_wait=60
+    local count=0
+    while [[ $count -lt $max_wait ]]; do
+        if systemctl --user is-active default.target &>/dev/null 2>&1; then
+            break
+        fi
+        sleep 1
+        ((count++))
+    done
+    if [[ $count -ge $max_wait ]]; then
+        logger "startbiglive: WARNING - user session not ready after ${max_wait}s, proceeding anyway"
+    fi
+}
+
+_wait_for_user_session
+
 #-------------------------------------------------------------------------------
 # Start appropriate desktop session based on detected environment
+# Using exec to prevent fallthrough to systemctl restart
 #-------------------------------------------------------------------------------
 
 # BigCommunity Core: Launch Calamares directly
 if grep -iq 'BigCommunity-Core.iso' /proc/cmdline; then
-    sudo calamares_polkit
+    exec sudo calamares_polkit
 
 elif [[ "$display_manager" == "gdm" ]]; then
     # GNOME: Clean up and start gnome-session
     rm -f "$HOME/Empty Bash" "$HOME/Empty Desktop File.desktop" "$HOME/Empty File"
     xdg-user-dirs-update
-    startgnome-community
+    exec startgnome-community
 
 elif [[ -e /usr/share/wayland-sessions/hyprland.desktop ]]; then
     # Hyprland detected
-    Hyprland
+    exec Hyprland
 
 elif [[ "$display_manager" == "sddm" || "$display_manager" == "lxdm" ]]; then
     # KDE Plasma
     if [[ "$XDG_SESSION_TYPE" == "x11" ]]; then
-        startkde-biglinux
+        exec startkde-biglinux
     else
-        startkde-biglinux wayland
+        exec startkde-biglinux wayland
     fi
 
 elif [[ -e /usr/share/xsessions/xfce.desktop ]]; then
@@ -163,14 +187,14 @@ elif [[ -e /usr/share/xsessions/xfce.desktop ]]; then
     export XDG_SESSION_DESKTOP=xfce
     export GDMSESSION=xfce
     export XDG_CURRENT_DESKTOP=XFCE
-    startxfce4
+    exec startxfce4
 
 elif [[ -e /usr/bin/startcinnamon-community ]]; then
     # Cinnamon: Clean up and start cinnamon-session
     rm -f "$HOME/Empty Bash" "$HOME/Empty Desktop File.desktop" "$HOME/Empty File"
     xdg-user-dirs-update
-    startcinnamon-community
+    exec startcinnamon-community
 fi
 
-# Restart display manager to apply changes
+# Fallback: restart display manager only if no session starter was found
 sudo systemctl restart "$display_manager"

biglinux-livecd/usr/share/biglinux/calamares/src/utils/constants.py

@@ -9,7 +9,7 @@
 # Application Information
 APP_NAME = "BigLinux Calamares Config"
 APP_ID = "com.biglinux.calamares-config"
-APP_VERSION = "1.0.12"
+APP_VERSION = "1.0.13"
 
 # Paths and Directories
 BASE_DIR = Path(__file__).parent.parent.parent

biglinux-livecd/usr/share/biglinux/livecd/services.py

@@ -487,6 +487,11 @@ def finalize_setup(self, config: SetupConfig):
                     ],
                     as_root=False,
                 )
+                # Restart the systemd service so JamesDSP actually starts
+                self._run_command(
+                    ["systemctl", "--user", "restart", "jamesdsp-autostart.service"],
+                    as_root=False,
+                )
         else:
             logger.info("JamesDSP not enabled, removing flag file if it exists.")
             self._run_command(["rm", "-f", self.tmp_jamesdsp_file], as_root=False)
@@ -502,6 +507,11 @@ def finalize_setup(self, config: SetupConfig):
                     ],
                     as_root=False,
                 )
+                # Stop the systemd service so JamesDSP actually stops
+                self._run_command(
+                    ["systemctl", "--user", "stop", "jamesdsp-autostart.service"],
+                    as_root=False,
+                )
 
         # Display profile/ICC configuration - save flag to /tmp
         if config.enable_enhanced_contrast:
@@ -552,6 +562,11 @@ def apply_jamesdsp_settings(self, enabled: bool):
                     ],
                     as_root=False,
                 )
+                # Restart the systemd service so JamesDSP actually starts
+                self._run_command(
+                    ["systemctl", "--user", "restart", "jamesdsp-autostart.service"],
+                    as_root=False,
+                )
         else:
             logger.info("Applying JamesDSP disabled settings...")
             self._run_command(["rm", "-f", self.tmp_jamesdsp_file], as_root=False)
@@ -565,6 +580,11 @@ def apply_jamesdsp_settings(self, enabled: bool):
                     ],
                     as_root=False,
                 )
+                # Stop the systemd service so JamesDSP actually stops
+                self._run_command(
+                    ["systemctl", "--user", "stop", "jamesdsp-autostart.service"],
+                    as_root=False,
+                )
 
     def apply_icc_profile_settings(self, enabled: bool):
         """