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synced 2026-11-12 18:30:56 +01:00
Krzysztof kuhy Rudnicki
ba7b502322
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The watcher started at the LightDM greeter, X refused it, and it hit the systemd restart limit in 15 s, so DP-2 never came up. It now waits for X, the unit passes XAUTHORITY, and i3 restarts it at login. The biggest monitor is now primary and leftmost (DP-0 was hardcoded). Prunes the oldest evidence file (60-file cap). CI_GREEN_SKIP: main is red from a runner DNS outage (apt could not resolve security.ubuntu.com), not code; failed jobs re-run. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WzxdWWTekMNwEdyLgWRgTs
55 lines
1.7 KiB
Bash
Executable File
55 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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# setup_monitor_autoconfig.sh — every monitor at its best mode, automatically.
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#
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# Installs the monitor-autoconfig systemd user service. It applies the layout
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# at login and again whenever a monitor is plugged or unplugged:
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# - each monitor runs its native resolution at the highest refresh rate;
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# - the biggest monitor is primary and leftmost, the others to its right;
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# - an unplugged monitor is switched off so no gap is left.
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# Policy lives in monitor_layout.py; the watcher in monitor_autoconfig.py.
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#
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# Run as your normal user (never with sudo). Idempotent: rerun after edits.
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# Uninstall: systemctl --user disable --now monitor-autoconfig.service
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set -euo pipefail
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HERE="$(dirname "$(readlink -f "$0")")"
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readonly HERE
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readonly UNIT=monitor-autoconfig.service
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readonly UNIT_DIR="$HOME/.config/systemd/user"
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log() { printf '[monitor-autoconfig] %s\n' "$*"; }
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die() {
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printf '[monitor-autoconfig] ERROR: %s\n' "$*" >&2
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exit 1
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}
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install_deps() {
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local pkg missing=()
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for pkg in python-xlib xorg-xrandr; do
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pacman -Q "$pkg" >/dev/null 2>&1 || missing+=("$pkg")
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done
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if ((${#missing[@]})); then
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log "installing ${missing[*]}"
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sudo pacman -S --needed --noconfirm "${missing[@]}"
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fi
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}
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install_unit() {
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mkdir -p "$UNIT_DIR"
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sed "s|@FEATURES_DIR@|$HERE|" "$HERE/systemd/$UNIT" >"$UNIT_DIR/$UNIT"
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systemctl --user daemon-reload
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systemctl --user enable "$UNIT" >/dev/null
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systemctl --user restart "$UNIT"
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}
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main() {
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((EUID != 0)) || die "run as your normal user, not root"
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install_deps
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install_unit
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systemctl --user is-active --quiet "$UNIT" || die "$UNIT failed to start"
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log "active; layout now: $(xrandr --listmonitors | tail -n +2 | awk '{print $4}' | paste -sd' ')"
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}
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main "$@"
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