I'm facing an issue with Freya.

Every time my Lenovo Y50-70 is suspended and then waked it shows a black screen with cursor.

I am unable to type anything nor use alt+shift+ to access the terminal. The computer simply stays frozen and I am forced to power it off and boot again.

How can I fix this black screen issue?

  • I have the same problem with Loki, I have all updates. Commented Jan 19, 2017 at 15:40

2 Answers 2


This was a confirmed bug in Elementary OS Freya when using nvidia-glx module. I had resolved it by following this post.

Run sudo -i scratch-text-editor /etc/default/acpi-support
Find and change POST_VIDEO=true to POST_VIDEO=false
Find and change SAVE_VBE_STATE=true to SAVE_VBE_STATE=false
Restart your laptop, issue should be solved.

I think that this is fixed in Loki.


I have had the same issue for quite a while now, Maybe they have fixed this on the Loki update. To solve your issue i have found that pressing the f buttons (f5, f6 f7) solves the problem, not sure why, nor which one specifically does the trick

  • for me it was solved by the latest update
    – Mike Rodov
    Commented May 19, 2017 at 17:43

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