Red Hat Bugzilla – Bug 832699
external display shutdown on laptop lid close
Last modified: 2013-07-31 20:44:06 EDT
Description of problem:
My external monitor, connected through VGA to my Thinkpad T520, suspends when I close the laptop lid. In Fedora 16 the monitor was not suspended but with Fedora 17 and a new version of gnome-power-manager, the display is turned off and the screen is locked, which is very annoying. There is this Bugreport in the Gnome Bugzilla which describes the problem very well, but it is reassigned to gnome-power-manager and nothing has changed.
When I disable the gnome-power-manager through dconf (org/gnome/settings-daemon/plugins/power), the monitor flickers for a short time but it is not disabled. But this is not an opportunity because suspend on lid close without a connected Display is very usefull.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. connect a display to your notebook and use it
2. close the laptop lid
3. the external monitor goes off
the display goes off
the display should be enabled
same problem with DVI output.
I have this problem with Fedora 18, Lenovo B590 (Intel Core i3 and HD 4000 graphics) and HDMI. I have
gsettings list-recursively org.gnome.settings-daemon.plugins.power
reports the following:
org.gnome.settings-daemon.plugins.power lid-close-ac-action 'suspend'
org.gnome.settings-daemon.plugins.power lid-close-battery-action 'suspend'
org.gnome.settings-daemon.plugins.power lid-close-suspend-with-external-monitor false
Whe I close the lid, the laptop does not suspend, but the signal to the external display is turned off. When I open the lid, the external display comes back on again without problems.
gnome-power-manager is probably the wrong component for this bug. At least on F18, gnome-power-manager only contains the statistics tool. The component should probably be gnome-settings-daemon or kernel.
I learned by searching FedoraForum.org that the external display actually will wake up if the mouse is moved for a few seconds after the laptop lid close. This works for me on x64 F18 and Lenovo B590. It's still disconcerting for new users that the external monitor goes blank, because it takes a moment to wake it up with mouse activity. If you don't know this and are just dabbling with the mouse and keyboard, you're unlikely to wake the monitor up. It would be nice to have a fix for the blackout.
I had the issue on Fedora 17 but in combination with Jupiter applet installed. The fix was to set the primary display to the external monitor.
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