iankelling.org Git - distro-setup/blob - laptop-xrandr

   1 #!/bin/bash
   2 # I, Ian Kelling, follow the GNU license recommendations at
   3 # https://www.gnu.org/licenses/license-recommendations.en.html. They
   4 # recommend that small programs, < 300 lines, be licensed under the
   5 # Apache License 2.0. This file contains or is part of one or more small
   6 # programs. If a small program grows beyond 300 lines, I plan to switch
   7 # its license to GPL.
   8
   9 # Copyright 2024 Ian Kelling
  10
  11 # Licensed under the Apache License, Version 2.0 (the "License");
  12 # you may not use this file except in compliance with the License.
  13 # You may obtain a copy of the License at
  14
  15 #     http://www.apache.org/licenses/LICENSE-2.0
  16
  17 # Unless required by applicable law or agreed to in writing, software
  18 # distributed under the License is distributed on an "AS IS" BASIS,
  19 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  20 # See the License for the specific language governing permissions and
  21 # limitations under the License.
  22
  23 set -e; . /usr/local/lib/bash-bear; set +e
  24
  25
  26 output=$(xrandr | grep -E "^(HDMI.?|DP1) connected" | awk '{print $1}' ||:)
  27
  28 left_right_arg=--right-of
  29 if [[ $output ]]; then
  30
  31   if [[ $output == HDMI2 ]]; then
  32     sum=$(sha256sum </sys/class/drm/card0-HDMI-A-2/edid | grep -oE '^.{10}')
  33     # identify monitor that is always on the left.
  34     if [[ $sum == 192efbdcef ]]; then
  35       left_right_arg=--left-of
  36     fi
  37   fi
  38   xrandr --output $output --off
  39   sleep 2
  40   xrandr --output $output $left_right_arg eDP1 --mode 3840x2160
  41
  42   for i in 1 2 4 5 6 7 8 9 10; do
  43     # if the workspace is already there, this will fail
  44     i3-msg '[workspace="'$i'"]' move workspace to output $output ||:
  45   done
  46 else
  47   xrandr --auto
  48
  49 fi