FelikZ · December 8, 2025 14:39 · FelikZ · Dec 8, 2025
diff --git a/rgb-fix.sh b/rgb-fix.sh
 #!/usr/bin/env bash

 # Script to force RGB Color Output on M1 and M2 based Macs for a selected display

 # Function to display an error message and exit
 function error_exit {
    echo "Error: $1" >&2
    exit 1
 }

 # Function to check if a command executed successfully
 function check_success {
    if [ $? -ne 0 ]; then
        error_exit "Command failed: $1"
    fi
 }

 set -e

 ORIGINAL_PLIST="/Library/Preferences/com.apple.windowserver.displays.plist"
 TEMP_DIR="$HOME/Downloads"
 TEMP_PLIST="$TEMP_DIR/com.apple.windowserver.displays.plist"

 # Step 1: Unlock the file if locked
 sudo chflags nouchg "$ORIGINAL_PLIST" || true
 echo "Step 1: File unlocked if necessary."

 # Step 2: Copy the plist to temp directory
 sudo cp "$ORIGINAL_PLIST" "$TEMP_PLIST"
 sudo chown "$USER" "$TEMP_PLIST"
 check_success "Copying the plist file"
 echo "Step 2: File copied successfully."

 set +e

 # Get number of displays from plist using Python plistlib
 num=$(python3 -c "
 import plistlib
 with open('$TEMP_PLIST', 'rb') as f:
    data = plistlib.load(f)
    print(len(data['DisplayAnyUserSets']['Configs'][0]['DisplayConfig']))
 " 2>/dev/null)
 if [ -z "$num" ] || [ "$num" -eq 0 ]; then
    error_exit "Unable to parse number of displays from plist."
 fi

 # Get display names from system_profiler
 mapfile -t display_names < <(system_profiler SPDisplaysDataType | awk '/^        [^:]+:/ { gsub(/:/,""); gsub(/^        /,""); print }' | grep -v '^ ')

 # Check if numbers match
 if [ ${#display_names[@]} -ne $num ]; then
    echo "Mismatch in number of displays detected (${#display_names[@]} vs $num). Using indices only."
    display_names=()
    for ((j=0; j<num; j++)); do
        display_names+=("Display $j")
    done
 fi

 # List displays
 echo "Connected displays:"
 for j in "${!display_names[@]}"; do
    echo "$((j+1)): ${display_names[j]}"
 done

 # Ask user to choose
 read -p "Enter the number of the display to update (1-${num}): " choice
 if ! [[ "$choice" =~ ^[0-9]+$ ]] || [ "$choice" -lt 1 ] || [ "$choice" -gt "$num" ]; then
    error_exit "Invalid choice."
 fi

 i=$((choice - 1))

 # Get the UUID of the selected display
 uuid=$(python3 -c "
 import plistlib
 with open('$TEMP_PLIST', 'rb') as f:
    data = plistlib.load(f)
    print(data['DisplayAnyUserSets']['Configs'][0]['DisplayConfig'][$i]['UUID'])
 " 2>/dev/null)
 if [ -z "$uuid" ]; then
    error_exit "Unable to retrieve UUID for the selected display."
 fi

 echo "Modifying ${uuid}..."

 # Ask user for bit depth
 read -p "Enter the bit depth (8 or 10): " bit_depth_choice
 if ! [[ "$bit_depth_choice" == "8" || "$bit_depth_choice" == "10" ]]; then
    error_exit "Invalid bit depth. Please enter 8 or 10."
 fi

 # Step 4: Modify the plist using embedded Python with plistlib
 python3 -c "
 import plistlib, sys
 file = '$TEMP_PLIST'
 uuid = '$uuid'
 bit_depth = int('$bit_depth_choice')

 link_desc = {
    'BitDepth': bit_depth,
    'EOTF': 0,
    'PixelEncoding': 0,  # 0 = RGB
    'Range': 1           # 1 = Full Range
 }

 with open(file, 'rb') as f:
    data = plistlib.load(f)

 modified_count = 0

 # Modify DisplayAnyUserSets section
 if 'DisplayAnyUserSets' in data and 'Configs' in data['DisplayAnyUserSets']:
    for config in data['DisplayAnyUserSets']['Configs']:
        if 'DisplayConfig' in config:
            for disp in config['DisplayConfig']:
                if 'UUID' in disp and disp['UUID'] == uuid:
                    disp['LinkDescription'] = link_desc.copy()
                    modified_count += 1

 # Modify DisplaySets section (CRITICAL - was missing before!)
 if 'DisplaySets' in data and 'Configs' in data['DisplaySets']:
    for config in data['DisplaySets']['Configs']:
        if 'DisplayConfig' in config:
            for disp in config['DisplayConfig']:
                if 'UUID' in disp and disp['UUID'] == uuid:
                    disp['LinkDescription'] = link_desc.copy()
                    modified_count += 1

 print(f'Modified {modified_count} display config entries for UUID {uuid}')

 with open(file, 'wb') as f:
    plistlib.dump(data, f, fmt=plistlib.FMT_BINARY)
 "
 check_success "Modifying plist with Python"
 echo "Step 4: Plist modified successfully."

 # Step 5: No conversion needed since edited in binary

 # Step 6: Validate the plist
 plutil -lint "$TEMP_PLIST"
 check_success "Validating plist"
 echo "Step 6: Plist validated successfully."

 # Step 7: Backup original file (only if backup doesn't exist, to preserve original)
 if [ ! -f "${ORIGINAL_PLIST}_backup" ]; then
    sudo cp "$ORIGINAL_PLIST" "${ORIGINAL_PLIST}_backup"
    check_success "Backing up original file"
    echo "Step 7: Original file backed up successfully."
 else
    echo "Step 7: Backup already exists, skipping (preserving original backup)."
 fi

 # Step 8: Remove user preferences if exists (they can override system settings)
 if [ -f "$HOME/Library/Preferences/com.apple.windowserver.displays.plist" ]; then
    if [ ! -f "$HOME/Library/Preferences/com.apple.windowserver.displays.plist_backup" ]; then
        mv "$HOME/Library/Preferences/com.apple.windowserver.displays.plist" "$HOME/Library/Preferences/com.apple.windowserver.displays.plist_backup"
        check_success "Backing up user preferences"
        echo "Step 8: User preferences backed up successfully."
    else
        rm "$HOME/Library/Preferences/com.apple.windowserver.displays.plist"
        echo "Step 8: User preferences removed (backup already exists)."
    fi
 fi

 # Step 9: Remove ByHost preferences if exists (they can override system settings)
 for file in "$HOME/Library/Preferences/ByHost/com.apple.windowserver.displays."*.plist; do
    if [ -f "$file" ] && [[ "$file" != *_backup ]]; then
        if [ ! -f "${file}_backup" ]; then
            mv "$file" "${file}_backup"
            check_success "Backing up ByHost file"
            echo "Step 9: ByHost file backed up successfully."
        else
            rm "$file"
            echo "Step 9: ByHost file removed (backup already exists)."
        fi
    fi
 done

 # Step 10: Copy modified plist back
 sudo chown "root" "$TEMP_PLIST"
 sudo mv "$TEMP_PLIST" "$ORIGINAL_PLIST"
 check_success "Copying modified plist back"
 echo "Step 10: Modified file copied back successfully."

 # Step 11: Set Stationery flag and lock the file (as per original gist)
 # Set Stationery Pad flag BEFORE locking (using SetFile if available)
 if command -v SetFile &> /dev/null; then
    sudo SetFile -a T "$ORIGINAL_PLIST" 2>/dev/null || true
 fi
 # Lock the file
 sudo chflags uchg "$ORIGINAL_PLIST"
 check_success "Locking the file"
 echo "Step 11: File locked successfully."

 # Step 12: Verify the changes were applied
 echo ""
 echo "=== Verification ==="
 link_count=$(python3 -c "
 import plistlib
 with open('$ORIGINAL_PLIST', 'rb') as f:
    data = plistlib.load(f)
 count = 0
 for section in ['DisplayAnyUserSets', 'DisplaySets']:
    if section in data and 'Configs' in data[section]:
        for config in data[section]['Configs']:
            for disp in config.get('DisplayConfig', []):
                if disp.get('UUID') == '$uuid' and 'LinkDescription' in disp:
                    count += 1
                    print(f'{section}: BitDepth={disp[\"LinkDescription\"].get(\"BitDepth\")}, PixelEncoding={disp[\"LinkDescription\"].get(\"PixelEncoding\")}, Range={disp[\"LinkDescription\"].get(\"Range\")}')
 print(f'Total entries modified: {count}')
 ")
 echo "$link_count"
 echo ""

 # Step 13: Ask for reboot
 read -p "Changes applied. Reboot required. Do you want to reboot now? (Y/N): " reboot_choice
 case "$reboot_choice" in
    y|Y ) sudo shutdown -r now ;;
    n|N ) echo "Reboot canceled. Please reboot manually for changes to take effect." ;;
    * ) echo "Invalid choice. Reboot canceled. Please reboot manually." ;;
 esac
	#!/usr/bin/env bash

	# Script to force RGB Color Output on M1 and M2 based Macs for a selected display

	# Function to display an error message and exit
	function error_exit {
	echo "Error: $1" >&2
	exit 1
	}

	# Function to check if a command executed successfully
	function check_success {
	if [ $? -ne 0 ]; then
	error_exit "Command failed: $1"
	fi
	}

	set -e

	ORIGINAL_PLIST="/Library/Preferences/com.apple.windowserver.displays.plist"
	TEMP_DIR="$HOME/Downloads"
	TEMP_PLIST="$TEMP_DIR/com.apple.windowserver.displays.plist"

	# Step 1: Unlock the file if locked
	sudo chflags nouchg "$ORIGINAL_PLIST" \|\| true
	echo "Step 1: File unlocked if necessary."

	# Step 2: Copy the plist to temp directory
	sudo cp "$ORIGINAL_PLIST" "$TEMP_PLIST"
	sudo chown "$USER" "$TEMP_PLIST"
	check_success "Copying the plist file"
	echo "Step 2: File copied successfully."

	set +e

	# Get number of displays from plist using Python plistlib
	num=$(python3 -c "
	import plistlib
	with open('$TEMP_PLIST', 'rb') as f:
	data = plistlib.load(f)
	print(len(data['DisplayAnyUserSets']['Configs'][0]['DisplayConfig']))
	" 2>/dev/null)
	if [ -z "$num" ] \|\| [ "$num" -eq 0 ]; then
	error_exit "Unable to parse number of displays from plist."
	fi

	# Get display names from system_profiler
	mapfile -t display_names < <(system_profiler SPDisplaysDataType \| awk '/^ [^:]+:/ { gsub(/:/,""); gsub(/^ /,""); print }' \| grep -v '^ ')

	# Check if numbers match
	if [ ${#display_names[@]} -ne $num ]; then
	echo "Mismatch in number of displays detected (${#display_names[@]} vs $num). Using indices only."
	display_names=()
	for ((j=0; j<num; j++)); do
	display_names+=("Display $j")
	done
	fi

	# List displays
	echo "Connected displays:"
	for j in "${!display_names[@]}"; do
	echo "$((j+1)): ${display_names[j]}"
	done

	# Ask user to choose
	read -p "Enter the number of the display to update (1-${num}): " choice
	if ! [[ "$choice" =~ ^[0-9]+$ ]] \|\| [ "$choice" -lt 1 ] \|\| [ "$choice" -gt "$num" ]; then
	error_exit "Invalid choice."
	fi

	i=$((choice - 1))

	# Get the UUID of the selected display
	uuid=$(python3 -c "
	import plistlib
	with open('$TEMP_PLIST', 'rb') as f:
	data = plistlib.load(f)
	print(data['DisplayAnyUserSets']['Configs'][0]['DisplayConfig'][$i]['UUID'])
	" 2>/dev/null)
	if [ -z "$uuid" ]; then
	error_exit "Unable to retrieve UUID for the selected display."
	fi

	echo "Modifying ${uuid}..."

	# Ask user for bit depth
	read -p "Enter the bit depth (8 or 10): " bit_depth_choice
	if ! [[ "$bit_depth_choice" == "8" \|\| "$bit_depth_choice" == "10" ]]; then
	error_exit "Invalid bit depth. Please enter 8 or 10."
	fi

	# Step 4: Modify the plist using embedded Python with plistlib
	python3 -c "
	import plistlib, sys
	file = '$TEMP_PLIST'
	uuid = '$uuid'
	bit_depth = int('$bit_depth_choice')

	link_desc = {
	'BitDepth': bit_depth,
	'EOTF': 0,
	'PixelEncoding': 0, # 0 = RGB
	'Range': 1 # 1 = Full Range
	}

	with open(file, 'rb') as f:
	data = plistlib.load(f)

	modified_count = 0

	# Modify DisplayAnyUserSets section
	if 'DisplayAnyUserSets' in data and 'Configs' in data['DisplayAnyUserSets']:
	for config in data['DisplayAnyUserSets']['Configs']:
	if 'DisplayConfig' in config:
	for disp in config['DisplayConfig']:
	if 'UUID' in disp and disp['UUID'] == uuid:
	disp['LinkDescription'] = link_desc.copy()
	modified_count += 1

	# Modify DisplaySets section (CRITICAL - was missing before!)
	if 'DisplaySets' in data and 'Configs' in data['DisplaySets']:
	for config in data['DisplaySets']['Configs']:
	if 'DisplayConfig' in config:
	for disp in config['DisplayConfig']:
	if 'UUID' in disp and disp['UUID'] == uuid:
	disp['LinkDescription'] = link_desc.copy()
	modified_count += 1

	print(f'Modified {modified_count} display config entries for UUID {uuid}')

	with open(file, 'wb') as f:
	plistlib.dump(data, f, fmt=plistlib.FMT_BINARY)
	"
	check_success "Modifying plist with Python"
	echo "Step 4: Plist modified successfully."

	# Step 5: No conversion needed since edited in binary

	# Step 6: Validate the plist
	plutil -lint "$TEMP_PLIST"
	check_success "Validating plist"
	echo "Step 6: Plist validated successfully."

	# Step 7: Backup original file (only if backup doesn't exist, to preserve original)
	if [ ! -f "${ORIGINAL_PLIST}_backup" ]; then
	sudo cp "$ORIGINAL_PLIST" "${ORIGINAL_PLIST}_backup"
	check_success "Backing up original file"
	echo "Step 7: Original file backed up successfully."
	else
	echo "Step 7: Backup already exists, skipping (preserving original backup)."
	fi

	# Step 8: Remove user preferences if exists (they can override system settings)
	if [ -f "$HOME/Library/Preferences/com.apple.windowserver.displays.plist" ]; then
	if [ ! -f "$HOME/Library/Preferences/com.apple.windowserver.displays.plist_backup" ]; then
	mv "$HOME/Library/Preferences/com.apple.windowserver.displays.plist" "$HOME/Library/Preferences/com.apple.windowserver.displays.plist_backup"
	check_success "Backing up user preferences"
	echo "Step 8: User preferences backed up successfully."
	else
	rm "$HOME/Library/Preferences/com.apple.windowserver.displays.plist"
	echo "Step 8: User preferences removed (backup already exists)."
	fi
	fi

	# Step 9: Remove ByHost preferences if exists (they can override system settings)
	for file in "$HOME/Library/Preferences/ByHost/com.apple.windowserver.displays."*.plist; do
	if [ -f "$file" ] && [[ "$file" != *_backup ]]; then
	if [ ! -f "${file}_backup" ]; then
	mv "$file" "${file}_backup"
	check_success "Backing up ByHost file"
	echo "Step 9: ByHost file backed up successfully."
	else
	rm "$file"
	echo "Step 9: ByHost file removed (backup already exists)."
	fi
	fi
	done

	# Step 10: Copy modified plist back
	sudo chown "root" "$TEMP_PLIST"
	sudo mv "$TEMP_PLIST" "$ORIGINAL_PLIST"
	check_success "Copying modified plist back"
	echo "Step 10: Modified file copied back successfully."

	# Step 11: Set Stationery flag and lock the file (as per original gist)
	# Set Stationery Pad flag BEFORE locking (using SetFile if available)
	if command -v SetFile &> /dev/null; then
	sudo SetFile -a T "$ORIGINAL_PLIST" 2>/dev/null \|\| true
	fi
	# Lock the file
	sudo chflags uchg "$ORIGINAL_PLIST"
	check_success "Locking the file"
	echo "Step 11: File locked successfully."

	# Step 12: Verify the changes were applied
	echo ""
	echo "=== Verification ==="
	link_count=$(python3 -c "
	import plistlib
	with open('$ORIGINAL_PLIST', 'rb') as f:
	data = plistlib.load(f)
	count = 0
	for section in ['DisplayAnyUserSets', 'DisplaySets']:
	if section in data and 'Configs' in data[section]:
	for config in data[section]['Configs']:
	for disp in config.get('DisplayConfig', []):
	if disp.get('UUID') == '$uuid' and 'LinkDescription' in disp:
	count += 1
	print(f'{section}: BitDepth={disp[\"LinkDescription\"].get(\"BitDepth\")}, PixelEncoding={disp[\"LinkDescription\"].get(\"PixelEncoding\")}, Range={disp[\"LinkDescription\"].get(\"Range\")}')
	print(f'Total entries modified: {count}')
	")
	echo "$link_count"
	echo ""

	# Step 13: Ask for reboot
	read -p "Changes applied. Reboot required. Do you want to reboot now? (Y/N): " reboot_choice
	case "$reboot_choice" in
	y\|Y ) sudo shutdown -r now ;;
	n\|N ) echo "Reboot canceled. Please reboot manually for changes to take effect." ;;
	* ) echo "Invalid choice. Reboot canceled. Please reboot manually." ;;
	esac
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