[Powertop] [PATCH] Fix screen DPMS support detection

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Consider DPMS disabled when we can't open /sys/class/drm/card0 directory.
---
 src/devices/backlight.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/devices/backlight.cpp b/src/devices/backlight.cpp
index b8c9147..c0219f3 100644
--- a/src/devices/backlight.cpp
+++ b/src/devices/backlight.cpp
@@ -84,7 +84,7 @@ static int dpms_screen_on(void)
 =

 	dir =3D opendir("/sys/class/drm/card0");
 	if (!dir)
-		return 1;
+		return 0;
 	while (1) {
 		entry =3D readdir(dir);
 		if (!entry)
-- =

1.7.5.4


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