Black screen during update from 14.04 to 16.04

Asked Apr 01 '17 at 11:25

Active Apr 19 '18 at 14:32

Viewed 432 times

I closed the lid while it was updating. I previously removed the hibernation when the lid closes, but during update it asked me that file will be replaced, and I checked it YES.
After that I closed my lid, and now I am left with a black screen with a cursor. Pressing CTRL+ALT+F1 gives a terminal, while CTRL+ALT+F7 gives blank screen with cursor. What should I do? Please help. I have seen other suggestions but nothing is working.

I even tried restarting the lightdm, even after swapoff -a command but it is not working. Also I am getting some error of type

Unable to lock ... 
Could not get lock ...

Possible duplicate of this but no solution is mentioned there. I do not want to lose my data. Please help. I fear to shut it down by pressing the power button as I was in the middle of upgradation.

edited Apr 13 '17 at 12:24

Community

asked Apr 01 '17 at 11:25

denominator

In terminal try these steps here – George Udosen Apr 01 '17 at 12:10
It says, "Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?" – denominator Apr 01 '17 at 12:12
find which process has a lock on it with ps -aux | grep 'apt-get' – George Udosen Apr 01 '17 at 12:19
lightdm has a lock on it – denominator Apr 01 '17 at 12:34
kill it pkill -9 lightdm. Then run through that link again – George Udosen Apr 01 '17 at 12:37
lightdm is the GUI. Are you sure I should kill it? As u see, I was in between the upgradation to 16.04 – denominator Apr 01 '17 at 12:44
Let us continue this discussion in chat. – denominator Apr 01 '17 at 12:44

Black screen during update from 14.04 to 16.04

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