[gnome-control-center/benzea/reenable-tests] tests: Show X server output

[Benjamin Berg <bberg src gnome org>]

commit 1a79f45f6ba94d71764e8f73c87de12cbf02072f
Author: Benjamin Berg <bberg redhat com>
Date:   Thu Jan 20 14:19:30 2022 +0100

    tests: Show X server output

 tests/shared/x11session.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/tests/shared/x11session.py b/tests/shared/x11session.py
index b9d1b6e5d..a7cfdf64b 100644
--- a/tests/shared/x11session.py
+++ b/tests/shared/x11session.py
@@ -34,7 +34,7 @@ class X11SessionTestCase(DBusTestCase):
     Xserver_args = ['-screen', '0', '1280x1024x24', '+extension', 'GLX']
     #: Where to redirect the X stdout and stderr to. Set to None for debugging
     #: purposes if the X server is failing for some reason.
-    Xserver_output = subprocess.DEVNULL
+    Xserver_output = None
 
     @classmethod
     def setUpClass(klass):