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Have to restart lightdm when opening laptop lid after 14.04 upgrade

rated 0 times [ 1] [ 0] / answers: 1 / hits: 1466 / 2 Years ago, fri, march 25, 2022, 4:30:58

I've just upgraded to 14.04.

Whenever I shut the laptop lid and come back to it later, after entering the password the screen just goes blank and requires ctrl+alt+f2-ing to a terminal to restart lightdm in order to get everything back working again.

I can't see anything obvious in the lightdm logs. I've deleted ~/.Xauthority as per the answer to a similar question to no avail.

Any ideas?

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aradxalte

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2 Years ago

answered 2 Years ago jectedrin · Accepted Answer

Unfortunately this appears to be a bug in 14.04 release which prevents light locker from bringing the screen back up after a suspend when closing the lid.

In order to get your UI back up you will need to go to a text terminal ctrl+alt+f1, login and run

service lightdm restart

Unfortunately this will log you out and you will loose unsaved work.

To stop this happening in future, uninstall light-locker and light-locker-settings and make sure xscreensaver is installed.

sudo apt-get remove light-locker light-locker-extensions

sudo apt-get install xscreensaver

I hope this helps. Hopefully this sill be fixed properly soon as there is a launchpad bug opened on it:
https://bugs.launchpad.net/ubuntu/+source/xfce4-power-manager/+bug/1303736