Skip to content

Fix brightness issues on Laptops #32

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
BluePhi09 wants to merge 2 commits into
base: main
Choose a base branch
from
+30 −2
Open

Fix brightness issues on Laptops #32

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
897f840
refactor brightness_list.sh to use associative array for unique brigh…
BluePhi09 Jan 23, 2026
9c1831c
Merge branch 'Axenide:main' into main
BluePhi09 Feb 6, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
32 changes: 30 additions & 2 deletions scripts/brightness_list.sh
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,29 @@
# Script to list all monitors and their current brightness
# Outputs format: MonitorName:Brightness

# declare associative map to collect unique brightness values per monitor
declare -A BRIGHTNESS_MAP=()

# Helper: set a brightness value in the map, preferring non-zero and larger values
set_brightness() {
local name="$1" value="$2"
local prev
prev="${BRIGHTNESS_MAP[$name]}"
if [ -z "$prev" ]; then
BRIGHTNESS_MAP[$name]="$value"
return
fi
# prefer non-zero over zero
if [ "$prev" -eq 0 ] && [ "$value" -gt 0 ]; then
BRIGHTNESS_MAP[$name]="$value"
return
fi
# prefer larger value if both non-zero
if [ "$value" -gt "$prev" ]; then
BRIGHTNESS_MAP[$name]="$value"
fi
}

# Check for internal displays using brightnessctl (backlight devices only)
if command -v brightnessctl &> /dev/null; then
DEVICES=$(brightnessctl -l 2>/dev/null | grep "backlight" | awk -F"'" '{print $2}')
Expand All @@ -16,7 +39,7 @@ if command -v brightnessctl &> /dev/null; then
if [ -z "$MONITOR_NAME" ]; then
MONITOR_NAME="eDP-1"
fi
echo "${MONITOR_NAME}:${PERCENT}"
set_brightness "$MONITOR_NAME" "$PERCENT"
fi
done
fi
Expand All @@ -35,10 +58,15 @@ if command -v ddcutil &> /dev/null; then
# End of display block, get brightness
BRIGHTNESS=$(ddcutil -b "$CURRENT_BUS" getvcp 10 --brief 2>/dev/null | awk '{print $4}')
if [ -n "$BRIGHTNESS" ]; then
echo "${CURRENT_CONNECTOR}:${BRIGHTNESS}"
set_brightness "$CURRENT_CONNECTOR" "$BRIGHTNESS"
fi
CURRENT_BUS=""
CURRENT_CONNECTOR=""
fi
done < <(ddcutil detect --brief 2>/dev/null; echo "")
fi

# Output unique brightness entries
for k in "${!BRIGHTNESS_MAP[@]}"; do
echo "${k}:${BRIGHTNESS_MAP[$k]}"
done