diff --git a/config/systemd/rustdesk-headless-inhibit.service b/config/systemd/rustdesk-headless-inhibit.service
new file mode 100644
index 0000000..4697615
--- /dev/null
+++ b/config/systemd/rustdesk-headless-inhibit.service
@@ -0,0 +1,18 @@
+[Unit]
+Description=Inhibit system sleep while RustDesk is active
+After=rustdesk-headless.service
+
+[Service]
+Type=simple
+ExecStart=/bin/bash -c '\
+    while true; do \
+        if pgrep -f "/usr/share/rustdesk/rustdesk --server" >/dev/null; then \
+            systemd-inhibit --what=sleep:idle:handle-lid-switch --who="RustDesk" --why="Remote access active" sleep 60; \
+        else \
+            sleep 5; \
+        fi; \
+    done'
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
diff --git a/config/systemd/rustdesk-headless.service b/config/systemd/rustdesk-headless.service
new file mode 100644
index 0000000..1244236
--- /dev/null
+++ b/config/systemd/rustdesk-headless.service
@@ -0,0 +1,40 @@
+[Unit]
+Description=RustDesk Headless Server (auto-display, sleep-safe)
+After=display-manager.service graphical.target network.target
+Wants=display-manager.service
+
+[Service]
+Type=simple
+User=root
+Environment="DISPLAY=:0"
+Environment="XAUTHORITY=/root/.Xauthority"
+Environment="LIBVA_DRIVER_NAME=none"
+Environment="VDPAU_DRIVER=none"
+Environment="LIBGL_ALWAYS_SOFTWARE=1"
+Environment="LIBGL_ALWAYS_INDIRECT=1"
+
+# Force DUMMY0 primary before starting
+ExecStartPre=/bin/bash -c '\
+    for i in 1 2 3 4 5 6 7 8 9 10; do \
+        if xrandr >/dev/null 2>&1; then \
+            if xrandr | grep -q "^DUMMY0"; then \
+                xrandr --output DUMMY0 --mode "1920x1080" --primary 2>/dev/null || true; \
+                exit 0; \
+            fi; \
+        fi; \
+        sleep 1; \
+    done'
+
+ExecStart=/usr/share/rustdesk/rustdesk --server
+ExecStartPost=/bin/bash -c 'echo "RustDesk started, ID: $(/usr/share/rustdesk/rustdesk --get-id 2>/dev/null || echo unknown)" >> /tmp/rustdesk-server.log'
+
+Restart=always
+RestartSec=10
+StartLimitInterval=60
+StartLimitBurst=3
+
+# Prevent system sleep while RustDesk is active
+ExecStopPost=/bin/systemctl start --no-block rustdesk-headless-inhibit.service
+
+[Install]
+WantedBy=multi-user.target
diff --git a/install.sh b/install.sh
index 49098e9..f75505c 100755
--- a/install.sh
+++ b/install.sh
@@ -2,9 +2,8 @@
 set -euo pipefail
 
 #######################################
-# RDtop — One-Command RustDesk Headless Installer
-# Works on any Linux (Intel iGPU, AMD, NVIDIA, CPU-only, VPS)
-# Usage: curl -fsSL https://git.softuniq.eu/NW/RDtop/raw/branch/main/install.sh | sudo bash
+# RDtop — Universal RustDesk Headless Installer
+# One command: curl -fsSL https://git.softuniq.eu/NW/RDtop/raw/branch/main/install.sh | sudo bash
 #######################################
 
 ARCH=$(uname -m)
@@ -29,23 +28,67 @@ echo "  Arch: $ARCH | Package: ${RUSTDESK_ARCH}.deb"
 echo "============================================"
 echo ""
 
-# --- 1. Install dependencies ---
-log "[1/6] Installing dependencies..."
+# --- 1. Install dependencies (verbose on fresh machine) ---
+log "[2/8] Installing dependencies..."
+export DEBIAN_FRONTEND=noninteractive
+
 if command -v apt-get >/dev/null 2>&1; then
-    export DEBIAN_FRONTEND=noninteractive
-    apt-get update -qq >/dev/null 2>&1 || true
-    apt-get install -y -qq curl wget xserver-xorg-core xserver-xorg-video-dummy >/dev/null 2>&1 || true
-    apt-get install -y -qq libva2 libvdpau1 >/dev/null 2>&1 || true
+    apt-get update -qq || true
+    # Core packages — must succeed
+    apt-get install -y -qq curl wget ca-certificates gnupg lsb-release >/dev/null 2>&1 || {
+        log "  CRITICAL: Failed to install base tools (curl/wget)"
+        exit 1
+    }
+    # Xorg + dummy driver
+    apt-get install -y -qq xserver-xorg-core xserver-xorg-video-dummy x11-xserver-utils >/dev/null 2>&1 || true
+    # VA/VDPAU libs (RustDesk needs these)
+    apt-get install -y -qq libva2 libvdpau1 libva-drm2 libva-x11-2 >/dev/null 2>&1 || true
+    # Polkit + inhibit (for preventing sleep)
+    apt-get install -y -qq policykit-1 dbus dbus-x11 >/dev/null 2>&1 || true
 elif command -v dnf >/dev/null 2>&1; then
-    dnf install -y curl wget xorg-x11-server-Xorg xorg-x11-drv-dummy >/dev/null 2>&1 || true
+    dnf install -y curl wget xorg-x11-server-Xorg xorg-x11-drv-dummy polkit dbus >/dev/null 2>&1 || true
 elif command -v pacman >/dev/null 2>&1; then
-    pacman -Sy --noconfirm curl wget xorg-server xf86-video-dummy >/dev/null 2>&1 || true
-else
-    log "WARNING: Unknown package manager. Trying to continue..."
+    pacman -Sy --noconfirm curl wget xorg-server xf86-video-dummy polkit dbus >/dev/null 2>&1 || true
 fi
 
-# --- 2. Detect display environment ---
-log "[2/6] Detecting display environment..."
+# --- 2. Disable sleep / suspend / screensaver (critical for headless) ---
+log "[3/8] Disabling sleep, suspend, hibernate, screensaver..."
+
+# systemd — mask sleep targets
+systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target 2>/dev/null || true
+
+# logind — prevent idle sleep
+if [ -f /etc/systemd/logind.conf ]; then
+    cp /etc/systemd/logind.conf /etc/systemd/logind.conf.bak.$(date +%s) 2>/dev/null || true
+    cat > /etc/systemd/logind.conf <<'EOF'
+[Login]
+HandleLidSwitch=ignore
+HandleLidSwitchExternalPower=ignore
+HandleLidSwitchDocked=ignore
+IdleAction=ignore
+EOF
+    systemctl restart systemd-logind 2>/dev/null || true
+    log "  systemd-logind: sleep disabled"
+fi
+
+# GNOME / gsettings — disable screensaver and lock (if available)
+if command -v gsettings >/dev/null 2>&1; then
+    gsettings set org.gnome.desktop.screensaver lock-enabled false 2>/dev/null || true
+    gsettings set org.gnome.desktop.screensaver idle-activation-enabled false 2>/dev/null || true
+    gsettings set org.gnome.desktop.session idle-delay 0 2>/dev/null || true
+    gsettings set org.gnome.desktop.screensaver lock-active false 2>/dev/null || true
+    log "  GNOME screensaver: disabled"
+fi
+
+# X11 — disable screen blanking
+if command -v xset >/dev/null 2>&1; then
+    xset s off 2>/dev/null || true
+    xset -dpms 2>/dev/null || true
+    xset s noblank 2>/dev/null || true
+fi
+
+# --- 3. Detect display environment ---
+log "[4/8] Detecting display environment..."
 HAS_DISPLAY=false
 HAS_XORG=false
 
@@ -59,15 +102,15 @@ if pgrep -x "Xorg" >/dev/null 2>&1 || pgrep -x "X" >/dev/null 2>&1; then
     log "  Xorg already running"
 fi
 
-# --- 3. Setup dummy driver if headless ---
-log "[3/6] Setting up dummy driver..."
+# --- 4. Setup dummy driver (force DUMMY0 as primary) ---
+log "[5/8] Setting up dummy driver + forcing DUMMY0 primary..."
 mkdir -p /etc/X11/xorg.conf.d/
 
 # Remove conflicting configs
 rm -f /etc/X11/xorg.conf.d/20-intel-virtual.conf 2>/dev/null || true
 rm -f /etc/X11/xorg.conf.d/90-fallback.conf 2>/dev/null || true
 
-# Create dummy config (works for both host and VPS)
+# Create dummy config with explicit primary output
 cat > /etc/X11/xorg.conf.d/20-dummy-headless.conf <<'XORG'
 Section "Device"
     Identifier "DummyHeadless"
@@ -89,85 +132,131 @@ Section "Screen"
     SubSection "Display"
         Depth 24
         Modes "1920x1080" "1280x720"
+        Virtual 1920 1080
     EndSubSection
 EndSection
+
+Section "ServerLayout"
+    Identifier "DummyLayout"
+    Screen 0 "DummyScreen" 0 0
+    Option "AutoAddGPU" "false"
+EndSection
 XORG
 chmod 644 /etc/X11/xorg.conf.d/20-dummy-headless.conf
 
-# --- 4. Start Xorg if headless ---
+# --- 5. Start Xorg if headless ---
 if [ "$HAS_DISPLAY" = false ] && [ "$HAS_XORG" = false ]; then
-    log "[4/6] Starting Xorg dummy display on :0..."
-    # Ensure no stale locks
+    log "[6/8] Starting Xorg dummy display on :0..."
     rm -f /tmp/.X11-unix/X0 /tmp/.X0-lock 2>/dev/null || true
     mkdir -p /tmp/.X11-unix
     chmod 1777 /tmp/.X11-unix
     
-    # Start Xorg with dummy config
+    # Start Xorg with dummy config (explicit config file)
     if [ "$EUID" -eq 0 ]; then
         nohup Xorg :0 -config /etc/X11/xorg.conf.d/20-dummy-headless.conf -nolisten tcp >/tmp/xorg-dummy.log 2>&1 &
     else
-        log "  WARNING: Not root, trying xvfb-run fallback..."
+        log "  WARNING: Not root, trying Xvfb..."
         apt-get install -y -qq xvfb >/dev/null 2>&1 || true
     fi
-    sleep 3
+    sleep 4
     
     # Verify
     if [ -S /tmp/.X11-unix/X0 ]; then
         log "  Xorg dummy display :0 created"
     else
         log "  WARNING: Xorg socket not found, trying Xvfb..."
+        pkill -x Xorg 2>/dev/null || true
+        rm -f /tmp/.X11-unix/X0 /tmp/.X0-lock 2>/dev/null || true
         nohup Xvfb :0 -screen 0 1920x1080x24 +extension GLX +extension RANDR +extension RENDER -ac >/tmp/xvfb.log 2>&1 &
-        sleep 2
+        sleep 3
     fi
     
-    # Setup xauth for root
+    # Setup xauth
     if [ "$EUID" -eq 0 ]; then
         xauth -f /root/.Xauthority add :0 . $(mcookie) 2>/dev/null || true
         chmod 600 /root/.Xauthority 2>/dev/null || true
     fi
 else
-    log "[4/6] Existing display detected, skipping Xorg startup"
+    log "  Step 6 skipped: existing display detected"
 fi
 
 export DISPLAY=:0
 export XAUTHORITY="${XAUTHORITY:-/root/.Xauthority}"
 
-# --- 5. Download & install RustDesk ---
-log "[5/6] Downloading RustDesk ${RUSTDESK_VERSION} for ${RUSTDESK_ARCH}..."
+# Force DUMMY0 as primary BEFORE RustDesk starts
+log "  Forcing DUMMY0 as primary output..."
+if command -v xrandr >/dev/null 2>&1; then
+    # Wait for xrandr to see outputs
+    for i in 1 2 3 4 5; do
+        if xrandr >/dev/null 2>&1; then
+            # Check if DUMMY0 exists
+            if xrandr | grep -q "^DUMMY0"; then
+                xrandr --output DUMMY0 --mode "1920x1080" --primary 2>/dev/null || true
+                log "    DUMMY0 set to primary 1920x1080"
+                break
+            fi
+            # Check if VIRTUAL1 exists (intel fallback)
+            if xrandr | grep -q "^VIRTUAL1"; then
+                xrandr --newmode "1920x1080_60" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 2>/dev/null || true
+                xrandr --addmode VIRTUAL1 "1920x1080_60" 2>/dev/null || true
+                xrandr --output VIRTUAL1 --mode "1920x1080_60" --primary 2>/dev/null || true
+                log "    VIRTUAL1 set to primary 1920x1080"
+                break
+            fi
+        fi
+        sleep 1
+    done
+fi
 
+# --- 6. Download & install RustDesk (with fallback) ---
+log "[7/8] Downloading RustDesk ${RUSTDESK_VERSION}..."
+
+# Try .deb from GitHub
 if command -v curl >/dev/null 2>&1; then
-    curl -fsSL -o "$TMP_DEB" "$RUSTDESK_URL" 2>&1 || true
+    curl -fsSL -o "$TMP_DEB" "$RUSTDESK_URL" 2>/dev/null || true
 elif command -v wget >/dev/null 2>&1; then
-    wget -q -O "$TMP_DEB" "$RUSTDESK_URL" 2>&1 || true
+    wget -q -O "$TMP_DEB" "$RUSTDESK_URL" 2>/dev/null || true
 fi
 
-if [ ! -f "$TMP_DEB" ] || [ ! -s "$TMP_DEB" ]; then
-    log "ERROR: Failed to download RustDesk .deb"
-    log "URL: $RUSTDESK_URL"
-    log "Trying to install from repository..."
-    apt-get install -y -qq rustdesk 2>/dev/null || true
-fi
+INSTALL_OK=false
 
 if [ -f "$TMP_DEB" ] && [ -s "$TMP_DEB" ]; then
-    log "  Installing from downloaded .deb..."
-    dpkg -i "$TMP_DEB" >/dev/null 2>&1 || apt-get install -f -y -qq >/dev/null 2>&1 || true
+    log "  Installing from .deb..."
+    # Force install even if dependencies missing (fix with apt-get after)
+    dpkg --force-depends --force-confnew -i "$TMP_DEB" >/dev/null 2>&1 || true
+    # Fix any missing deps
+    apt-get install -f -y -qq >/dev/null 2>&1 || true
     rm -f "$TMP_DEB"
+    
+    if [ -f /usr/share/rustdesk/rustdesk ]; then
+        INSTALL_OK=true
+    fi
 fi
 
-# Verify installation
-if [ ! -f /usr/share/rustdesk/rustdesk ]; then
-    log "ERROR: RustDesk not found at /usr/share/rustdesk/rustdesk"
-    log "Installation failed. Check /tmp/rdtop-install.log"
+# Fallback: install from repo if .deb failed or not downloaded
+if [ "$INSTALL_OK" = false ]; then
+    log "  .deb failed or not available, trying repository install..."
+    apt-get install -y -qq rustdesk 2>/dev/null || true
+    
+    # Check again
+    if [ -f /usr/share/rustdesk/rustdesk ]; then
+        INSTALL_OK=true
+    fi
+fi
+
+if [ "$INSTALL_OK" = false ]; then
+    log "ERROR: RustDesk installation failed. Check /tmp/rdtop-install.log"
     exit 1
 fi
 
-# --- 6. Start RustDesk & output credentials ---
-log "[6/6] Starting RustDesk server..."
+log "  RustDesk installed: $(/usr/share/rustdesk/rustdesk --version 2>/dev/null || echo 'unknown')"
+
+# --- 7. Configure RustDesk for headless (no monitor selection, survive lock) ---
+log "[8/8] Configuring RustDesk for headless + sleep-safe..."
 
-# Create config dir
 mkdir -p ~/.config/rustdesk
 
-# Write initial config with public rendezvous (for stable ID)
+# Write config: public rendezvous, auto-display selection disabled (DUMMY0 is primary)
 cat > ~/.config/rustdesk/RustDesk2.toml <<'EOF'
 rendezvous_server = 'rs-ny.rustdesk.com:21116'
 nat_type = 1
@@ -176,45 +265,54 @@ unlock_pin = ''
 
 [options]
 local-ip-addr = 'auto'
+hw-codec = 'N'
 EOF
 chmod 600 ~/.config/rustdesk/RustDesk2.toml
 
-# Start server
+# Kill any old RustDesk
 pkill -f "/usr/share/rustdesk/rustdesk" 2>/dev/null || true
-sleep 1
+sleep 2
 
+# Start RustDesk with all env vars
 export DISPLAY=:0
 export XAUTHORITY=/root/.Xauthority
 export LIBVA_DRIVER_NAME=none
 export VDPAU_DRIVER=none
 export LIBGL_ALWAYS_SOFTWARE=1
+export LIBGL_ALWAYS_INDIRECT=1
 
 nohup /usr/share/rustdesk/rustdesk --server >/tmp/rustdesk-server.log 2>&1 &
 sleep 5
 
+# Verify running
+if ! pgrep -f "/usr/share/rustdesk/rustdesk --server" >/dev/null; then
+    log "WARNING: RustDesk server not running, retrying..."
+    sleep 3
+    nohup /usr/share/rustdesk/rustdesk --server >/tmp/rustdesk-server.log 2>&1 &
+    sleep 3
+fi
+
 # Get credentials
 RUSTDESK_ID=$(/usr/share/rustdesk/rustdesk --get-id 2>/dev/null || echo "N/A")
 
-# Read or set password
+# Get or set password
 RUSTDESK_PASS=""
 if [ -f ~/.config/rustdesk/RustDesk.toml ]; then
-    # Try to read encrypted password (it won't be plaintext)
     RUSTDESK_PASS=$(python3 -c "
 import sys
 try:
     with open(sys.argv[1]) as f:
-        for line in f:
+        content = f.read()
+        for line in content.split('\n'):
             if 'password' in line and '=' in line:
-                parts = line.split('=')
-                if len(parts) > 1:
-                    print(parts[1].strip().strip(\"'\"))
-                    break
+                val = line.split('=', 1)[1].strip().strip(\"'\").strip('\"')
+                if val: print(val); break
 except: pass
 " ~/.config/rustdesk/RustDesk.toml 2>/dev/null || true)
 fi
 
 if [ -z "$RUSTDESK_PASS" ]; then
-    RUSTDESK_PASS="<генерируется RustDesk — посмотрите в GUI>"
+    RUSTDESK_PASS="<пароль в GUI: rustdesk → Настройки → Безопасность>"
 fi
 
 # Summary
@@ -223,17 +321,74 @@ echo "============================================"
 echo "         RustDesk Ready!"
 echo "============================================"
 echo ""
-printf "  %-12s %s\n" "ID:" "$RUSTDESK_ID"
-printf "  %-12s %s\n" "Password:" "$RUSTDESK_PASS"
-printf "  %-12s %s\n" "Display:" ":0 (1920x1080 dummy)"
-printf "  %-12s %s\n" "Version:" "$RUSTDESK_VERSION"
-printf "  %-12s %s\n" "Arch:" "$ARCH"
+printf "  %-14s %s\n" "ID:" "$RUSTDESK_ID"
+printf "  %-14s %s\n" "Password:" "$RUSTDESK_PASS"
+printf "  %-14s %s\n" "Display:" ":0 (DUMMY0 primary 1920x1080)"
+printf "  %-14s %s\n" "Sleep/Lock:" "disabled (systemd masked)"
+printf "  %-14s %s\n" "Version:" "$RUSTDESK_VERSION"
+printf "  %-14s %s\n" "Arch:" "$ARCH"
 echo ""
-echo "  Connect:    rustdesk $RUSTDESK_ID"
-echo "  Logs:       /tmp/rdtop-install.log"
-echo "  RustDesk:   /tmp/rustdesk-server.log"
-echo "  Xorg:       /tmp/xorg-dummy.log"
+echo "  Connect:      rustdesk $RUSTDESK_ID"
+echo "  Status:       systemctl status display-manager"
+echo "  Logs:         /tmp/rdtop-install.log"
+echo "  RustDesk:     /tmp/rustdesk-server.log"
+echo "  Xorg:         /tmp/xorg-dummy.log"
 echo ""
 echo "============================================"
 
 log "Installation complete. ID: $RUSTDESK_ID"
+
+# Post-install: show monitor status
+if command -v xrandr >/dev/null 2>&1; then
+    echo ""
+    echo "--- Current monitor status ---"
+    xrandr --listmonitors 2>/dev/null || echo "xrandr not available"
+fi
+
+# --- 8. Install systemd unit for RustDesk (survives sleep/lock) ---
+log "[8/8] Installing systemd unit..."
+
+# Write unit inline
+cat > /etc/systemd/system/rustdesk-headless.service <<'UNIT'
+[Unit]
+Description=RustDesk Headless Server (auto-display, sleep-safe)
+After=display-manager.service graphical.target network.target
+Wants=display-manager.service
+
+[Service]
+Type=simple
+User=root
+Environment="DISPLAY=:0"
+Environment="XAUTHORITY=/root/.Xauthority"
+Environment="LIBVA_DRIVER_NAME=none"
+Environment="VDPAU_DRIVER=none"
+Environment="LIBGL_ALWAYS_SOFTWARE=1"
+Environment="LIBGL_ALWAYS_INDIRECT=1"
+
+ExecStartPre=/bin/bash -c 'for i in 1 2 3 4 5 6 7 8 9 10; do if xrandr >/dev/null 2>&1; then if xrandr | grep -q "^DUMMY0"; then xrandr --output DUMMY0 --mode "1920x1080" --primary 2>/dev/null || true; exit 0; fi; fi; sleep 1; done'
+
+ExecStart=/usr/share/rustdesk/rustdesk --server
+Restart=always
+RestartSec=10
+StartLimitInterval=60
+StartLimitBurst=3
+
+[Install]
+WantedBy=multi-user.target
+UNIT
+
+systemctl daemon-reload
+systemctl enable rustdesk-headless.service
+
+# Stop the nohup process and start via systemd
+pkill -f "/usr/share/rustdesk/rustdesk --server" 2>/dev/null || true
+sleep 2
+systemctl start rustdesk-headless.service
+
+sleep 3
+if systemctl is-active rustdesk-headless.service >/dev/null 2>&1; then
+    log "  systemd unit: rustdesk-headless.service ACTIVE"
+else
+    log "  WARNING: rustdesk-headless.service not active, using nohup fallback"
+    nohup /usr/share/rustdesk/rustdesk --server >/tmp/rustdesk-server.log 2>&1 &
+fi