From: Phillip Berndt <phillip.berndt@googlemail.com>
Date: Sun, 8 Mar 2015 17:14:06 +0000 (+0100)
Subject: Prevent, in apply_configuration, a xrandr call that disables all screens
X-Git-Tag: 1.0~71
X-Git-Url: https://git.donarmstrong.com/?p=deb_pkgs%2Fautorandr.git;a=commitdiff_plain;h=29cd564aeb1d081e8fe7cf1ceba41e7b642fe9f6

Prevent, in apply_configuration, a xrandr call that disables all screens

See pull request #20
---

diff --git a/autorandr.py b/autorandr.py
index 9dea362..2baa1b1 100755
--- a/autorandr.py
+++ b/autorandr.py
@@ -462,6 +462,13 @@ def apply_configuration(configuration, dry_run=False):
         else:
             disable_outputs = disable_outputs[-1:]
 
+    # If disable_outputs still has more than one output in it, one of the xrandr-calls below would
+    # disable the last two screens. This is a problem, so if this would happen, instead disable only
+    # one screen in the first call below.
+    if len(disable_outputs) > 0 and len(disable_outputs) % 2 == 0:
+        # In the context of a xrandr call that changes the display change, `--query' should do nothing
+        disable_outputs.insert(0, ['--query'])
+
     # Enable the remaining outputs in pairs of two operations
     operations = disable_outputs + enable_outputs
     for index in range(0, len(operations), 2):