[xrandr] update display_toggle to handle one monitor situation

So when a laptop is unplugged we don't get stuck with a black screen.

1 files changed, 12 insertions, 8 deletions

diff --git a/misc/bin/display_toggle.sh b/misc/bin/display_toggle.sh
index b2c7e5c..e7dfcf5 100755
--- a/misc/bin/display_toggle.sh
+++ b/misc/bin/display_toggle.sh
@@ -1,11 +1,14 @@
 #!/bin/bash
 
-# Assuming there are two displays. A small one (e.g. laptop) and a big
-# one (e.g. monitor). Identify the displays, and toggle between 3
-# states: small one only -> both with the big one to the left of the
-# small one -> big one only
-# small one: <20 inch
-# big one: >20 inch
+# toggle display arrangements.
+
+# If there is only one monitor, then run xrandr --auto
+
+# Otherwise assume there are two displays. A small one (e.g. laptop)
+# and a big one (e.g. monitor). Identify the displays, and toggle
+# between 3 states: small one only -> both with the big one to the
+# left of the small one -> big one only small one: <20 inch big one:
+# >20 inch
 
 # Make sure the variables from pipe can be assigned
 # https://stackoverflow.com/questions/42963395/bash-assign-variable-from-pipe
@@ -21,9 +24,10 @@ xrandr | grep " connected " | while IFS=$'\n' read -r line; do
   fi
 done
 
+# Only one monitor: run xrandr --auto
 if (( i == 1 )); then
-  echo "Only one connected display"
-  exit 1
+  xrandr --auto
+  exit 0
 fi
 
 regex="^.*/([0-9]+)x.*/([0-9]+).* ([^ ]+)$"