Laptop often locked with black screen when re-opening lid

Bug #1575871 reported by Alexander Karelas on 2016-04-27
This bug affects 1 person
Affects Status Importance Assigned to Milestone
pm-utils (Ubuntu)

Bug Description

I have a Dell Latitude E5520 (bought in 2012). Worked fine with Ubuntu 14.04 LTS.

Since installing Ubuntu 16.04, roughly half the times I close the lid, the fan of the laptop keeps running the whole time, and in those cases that the fan keeps running, if I open the lid, all I get is a black screen, the fan keeps running, and the power LED is on.

If, when closing the lid, the fan stops, then when I open the lid I get the normal "enter password to unlock" screen.

Alexander Karelas (karjala) wrote :

When I get the black screen I mentioned above, there is no way out of it. I have to hold the power button until the computer turns off.

Alexander Karelas (karjala) wrote :

Bug has not occurred again for over a week of heavy use of my laptop.

Should I close this bug now?

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