lots of fixes, improvements, t12 stuff

[distro-setup] / laptop-xrandr

diff --git a/laptop-xrandr b/laptop-xrandr
index ce5ab3672002f3e438c50c18b284fa864f20a42a..6701e74525d7c2203a4a03a5fc9c533596b04ec9 100755 (executable)
--- a/laptop-xrandr
+++ b/laptop-xrandr
@@ -1,17 +1,56 @@
 #!/bin/bash
-set -e; . /usr/local/lib/err; set +e
+# I, Ian Kelling, follow the GNU license recommendations at
+# https://www.gnu.org/licenses/license-recommendations.en.html. They
+# recommend that small programs, < 300 lines, be licensed under the
+# Apache License 2.0. This file contains or is part of one or more small
+# programs. If a small program grows beyond 300 lines, I plan to switch
+# its license to GPL.
 
+# Copyright 2024 Ian Kelling
 
-output=HDMI2
-output=DP1
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 
-if xrandr | grep -q "^$output disconnected" &>/dev/null; then
-  xrandr --auto
-else
-  xrandr --output $output --right-of eDP1 --mode 3840x2160
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -e; . /usr/local/lib/bash-bear; set +e
+
+# eg eDP-1 connected primary
+laptop_out=$(xrandr | awk '$3 == "primary" {print $1}')
+output=$(xrandr | grep -E "^(HDMI|DP)[^ ]* connected [0-9]" | awk '{print $1}' ||:)
+
+left_right_arg=--right-of
+if [[ $output ]]; then
+
+  # identify monitors that are always on the left.
+  if [[ $output == HDMI2 && $(sha256sum </sys/class/drm/card0-HDMI-A-2/edid | grep -oE '^.{10}') == 192efbdcef ]]; then
+    left_right_arg=--left-of
+  fi
+  if [[ $output == HDMI-1 && $(sha256sum </sys/class/drm/card1-HDMI-A-1/edid | grep -oE '^.{10}') == 7c58f9ac1e ]]; then
+    left_right_arg=--left-of
+  fi
+
+  xrandr --output $output --off
+  sleep 2
+  mode=$(xrandr | grep -A1 -E "^$output" | tail -n1 | awk '{print $1}')
+  # eg: 3840x2160
+  echo mode=$mode
+  xrandr --output $output $left_right_arg $laptop_out --mode $mode
 
   for i in 1 2 4 5 6 7 8 9 10; do
-    # if the workspace is already there, this will fail
+    # if the workspace is already there, this will fail.
+    # if the workspace doesn't exist yet, it fails with:
+    # ERROR: No output matched
     i3-msg '[workspace="'$i'"]' move workspace to output $output ||:
   done
+else
+  xrandr --auto
+
 fi