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I want screen blanking after 10 or 30 minutes, but at present the screen doesn't blank at all. This has been an issue since upgrading to 11.10. At present, even after a couple of hours, the screen doesn't blank, even though in the screen lock settings it is set to go off after 10 minutes. I can't find any good source of information as to how to troubleshoot the screen blanking / screen saver system in Unity.

Output of gsettings list-recursively | grep "(power sleep-display\|power active)"

(process:3261): GLib-CRITICAL **: g_strv_length: assertion `str_array != NULL' failed

(process:3261): GLib-CRITICAL **: g_strv_length: assertion `str_array != NULL' failed
org.gnome.settings-daemon.plugins.power active true
org.gnome.settings-daemon.plugins.power sleep-display-ac 60
org.gnome.settings-daemon.plugins.power sleep-display-battery 60

For reference, process 3261 is the gsettings process

The machine is a Sony Vaio VPCEB1Z0E, i5-430M, 4GB RAM, AMD graphics

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Please add the output of gsettings list-recursively | grep "\(power sleep-display\|power active\)" to your question. – htorque Jan 1 at 22:58
Is this the display or the program screen? – Arcege Jan 2 at 1:14
1  
Can you add some hardware information to your question? – Jorge Castro Jan 2 at 21:44
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