Using this instrumentation patch for debugging:
--- a/plugins/power/gpm-common.c
+++ b/plugins/power/gpm-common.c
@@ -51,6 +51,14 @@
int
gsd_power_backlight_abs_to_percentage (int min, int max, int value)
{
+ g_log (G_LOG_DOMAIN,
+ G_LOG_LEVEL_CRITICAL,
+ "file %s: line %d (%s): min is %u, max is %u, value is %u",
+ __FILE__,
+ __LINE__,
+ G_STRFUNC,
+ min, max, value);
+
g_return_val_if_fail (max > min, -1);
g_return_val_if_fail (value >= min, -1);
g_return_val_if_fail (value <= max, -1);
Before sleep:
17:34:05 gsd-power: file ../plugins/power/gpm-common.c: line 58
(gsd_power_backlight_abs_to_percentage): min is 0, max is 2, value is 0
17:34:05 gsd-power: file ../plugins/power/gpm-common.c: line 58
(gsd_power_backlight_abs_to_percentage): min is 2, max is 255, value is 12
17:34:05 gsd-power: file ../plugins/power/gpm-common.c: line 58
(gsd_power_backlight_abs_to_percentage): min is 2, max is 255, value is 12
After sleep:
17:35:29 gsd-power: gsd_power_backlight_abs_to_percentage: assertion 'max >
min' failed
17:35:29 gsd-power: file ../plugins/power/gpm-common.c: line 58
(gsd_power_backlight_abs_to_percentage): min is 4294967295, max is 4294967295,
value is 4294967295
17:35:29 gsd-power: gsd_power_backlight_abs_to_percentage: assertion 'max >
min' failed
17:35:29 gsd-power: file ../plugins/power/gpm-common.c: line 58
(gsd_power_backlight_abs_to_percentage): min is 4294967295, max is 4294967295,
value is 4294967295
17:35:29 gsd-power: gsd_power_backlight_abs_to_percentage: assertion 'max >
min' failed
17:35:29 gsd-power: file ../plugins/power/gpm-common.c: line 58
(gsd_power_backlight_abs_to_percentage): min is 4294967295, max is 4294967295,
value is 4294967295
17:35:29 gsd-power: gsd_power_backlight_abs_to_percentage: assertion 'max >
min' failed
17:35:29 gsd-power: file ../plugins/power/gpm-common.c: line 58
(gsd_power_backlight_abs_to_percentage): min is 4294967295, max is 4294967295,
value is 4294967295
17:35:28 gsd-power: gsd_power_backlight_abs_to_percentage: assertion 'max >
min' failed
--
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https://bugs.launchpad.net/bugs/2081294
Title:
gsd_power_backlight_abs_to_percentage: assertion 'max > min' failed
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