Bug 370991 - Black screen coming out of sleep
Summary: Black screen coming out of sleep
Status: RESOLVED DUPLICATE of bug 370352
Alias: None
Product: kde
Classification: I don't know
Component: general (show other bugs)
Version: unspecified
Platform: Kubuntu Linux
: NOR major
Target Milestone: ---
Assignee: Unassigned bugs mailing-list
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-10-17 08:15 UTC by Rajinder Yadav
Modified: 2016-10-24 03:22 UTC (History)
1 user (show)

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Description Rajinder Yadav 2016-10-17 08:15:20 UTC 
Put system into RAM suspend from the taskbar, wait several hours and wake up system.

I see a black screen with a mouse pointer that I can move around, nothing else. I am unable to login my system and forced to do a cold reboot.

Using Kubuntu 16.04.01
KDE Plasma: 5.5.5
Qt Ver: 5.5.1
Kernel: 4.4.0-43-generic


Reproducible: Sometimes

Steps to Reproduce:
1.
Comment 1 Rajinder Yadav 2016-10-17 08:18:14 UTC 
My system is set to request a password to login, so could be issues with login screen or window system, note the mouse is visible and responds to mouse moves.
Comment 2 Christoph Feck 2016-10-18 01:07:27 UTC 
Does pressing Shift+Alt+F12 when you get the black screen show you the desktop again?
Comment 3 Rajinder Yadav 2016-10-18 09:31:15 UTC 
Next time this happens, I will do what you suggested and report back.
Comment 4 Rajinder Yadav 2016-10-24 01:02:11 UTC 
 Christoph, this does not help, happen again and I was forced to cold reboot.

I suspect is has to do something with the session managed when, "Lock screen on resume" is selected.
Comment 5 Christoph Feck 2016-10-24 03:22:28 UTC 
Thanks for the information. Unless we have more information, let's assume it is the same bug as reported earlier. It might be a driver issue, please see bug 370352 comment #1.

*** This bug has been marked as a duplicate of bug 370352 ***