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Add Wayland display server support for power management

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Added support for both X11 and Wayland environments:

Display Server Detection:
- Auto-detects Wayland via WAYLAND_DISPLAY environment variable
- Falls back to X11 commands if not Wayland
- Works seamlessly on both display servers

Wayland-specific tools:
- wlopm - Wayland output power management (keeps display on)
- wlr-randr - Output management for wlroots compositors
- ydotool - Mouse movement for Wayland (alternative to xdotool)
- systemd-inhibit integration for idle prevention

Enhanced display keep-alive script:
- Detects display server type on startup
- Uses appropriate commands based on environment
- Wayland: wlopm, wlr-randr, ydotool
- X11: xset, xdotool, xrandr
- Both: tvservice for HDMI power control

App-level improvements (main.py):
- Detects Wayland via os.environ check
- Executes Wayland-specific commands when detected
- Maintains X11 compatibility for older systems

Installation improvements:
- Auto-installs Wayland tools if Wayland is detected
- Attempts to install: wlopm, wlr-randr, ydotool
- Graceful fallback if packages unavailable

This ensures HDMI power management works correctly on:
- Raspberry Pi OS with X11 (older versions)
- Raspberry Pi OS with Wayland (Bookworm and newer)
- Any Linux system using either display server
This commit is contained in:
Kiwy Player
2026-01-17 20:15:47 +02:00
parent 72a6d7e704
commit e735e85d3c
4 changed files with 173 additions and 44 deletions
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69
src/main.py
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@@ -930,34 +930,55 @@ class SignagePlayer(Widget):
def signal_screen_activity(self, dt):
"""Signal screen activity to prevent power saving/sleep
Uses multiple methods to keep display awake:
1. xset s reset - Reset screensaver timeout
2. xset dpms force on - Force display on
3. xdotool - Move mouse to trigger activity
4. tvservice - Keep HDMI powered on (Raspberry Pi)
5. xrandr - Disable monitor power saving
Supports both X11 and Wayland display servers.
Uses multiple methods to keep display awake.
"""
try:
# Method 1: Reset screensaver timer using xset
os.system('DISPLAY=:0 xset s reset 2>/dev/null')
# Detect display server type
is_wayland = os.environ.get('WAYLAND_DISPLAY') is not None
# Method 2: Force display on
os.system('DISPLAY=:0 xset dpms force on 2>/dev/null')
# Method 3: Disable DPMS
os.system('DISPLAY=:0 xset -dpms 2>/dev/null')
# Method 4: Move mouse slightly (subtle, user won't notice)
if os.system('DISPLAY=:0 xdotool mousemove_relative 1 1 2>/dev/null') == 0:
os.system('DISPLAY=:0 xdotool mousemove_relative -1 -1 2>/dev/null')
# Method 5: Keep HDMI powered on (Raspberry Pi specific)
os.system('/usr/bin/tvservice -p 2>/dev/null')
# Method 6: Disable monitor power saving via xrandr
os.system('DISPLAY=:0 xrandr --output HDMI-1 --power-profile performance 2>/dev/null || true')
if is_wayland:
# Wayland-specific commands
Logger.debug("SignagePlayer: Screen activity signal sent (display kept awake)")
# Method 1: Use wlopm (Wayland output power management)
os.system('wlopm --on \* 2>/dev/null || true')
# Method 2: Use wlr-randr for wlroots compositors
os.system('wlr-randr --output HDMI-A-1 --on 2>/dev/null || true')
# Method 3: Simulate activity via ydotool (Wayland's xdotool alternative)
if os.system('which ydotool 2>/dev/null') == 0:
os.system('ydotool mousemove -x 1 -y 1 2>/dev/null || true')
os.system('ydotool mousemove -x -1 -y -1 2>/dev/null || true')
# Method 4: Keep HDMI powered on (works on both)
os.system('/usr/bin/tvservice -p 2>/dev/null')
Logger.debug("SignagePlayer: Wayland screen activity signal sent")
else:
# X11-specific commands (original code)
# Method 1: Reset screensaver timer using xset
os.system('DISPLAY=:0 xset s reset 2>/dev/null')
# Method 2: Force display on
os.system('DISPLAY=:0 xset dpms force on 2>/dev/null')
# Method 3: Disable DPMS
os.system('DISPLAY=:0 xset -dpms 2>/dev/null')
# Method 4: Move mouse slightly (subtle, user won't notice)
if os.system('DISPLAY=:0 xdotool mousemove_relative 1 1 2>/dev/null') == 0:
os.system('DISPLAY=:0 xdotool mousemove_relative -1 -1 2>/dev/null')
# Method 5: Keep HDMI powered on (Raspberry Pi specific)
os.system('/usr/bin/tvservice -p 2>/dev/null')
# Method 6: Disable monitor power saving via xrandr
os.system('DISPLAY=:0 xrandr --output HDMI-1 --power-profile performance 2>/dev/null || true')
Logger.debug("SignagePlayer: X11 screen activity signal sent")
except Exception as e:
Logger.debug(f"SignagePlayer: Screen activity signal failed (non-critical): {e}")