Can't reach greeter after lock screen

Bug #1706713 reported by Daniil Leontiev on 2017-07-26
This bug affects 5 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

Several days ago I faced a problem: after locking screen with Alt+Ctrl+L the screen turns off as expected, but when I try to wake it (move mouse, press any button) and type password the screen turns on but I only see black screen and cursor on it. I have to reboot computer and login again. I tried to call Alt+Ctrl+F7 and so on, but nothing helps. I did the fresh install and it worked until I'd updated packages i.e. kernel to version 4.10 from 4.8.

I've booted with the previous version of the kernel ( and all works fine.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.10.0-27-generic 4.10.0-27.30~16.04.2
ProcVersionSignature: Ubuntu 4.10.0-27.30~16.04.2-generic 4.10.17
Uname: Linux 4.10.0-27-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Jul 26 19:43:11 2017
InstallationDate: Installed on 2017-07-26 (0 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
SourcePackage: linux-hwe
UpgradeStatus: No upgrade log present (probably fresh install)

Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in linux-hwe (Ubuntu):
status: New → Confirmed
Lopaka Delp (lopaka-z) wrote :

Recent apt update/apt upgrade fixed the problem.

uname after update output:

Linux ubuntu 4.10.0-28-generic #32~16.04.2-Ubuntu SMP Thu Jul 20 10:19:48 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Yeah, it doesn't seem to be happening for me either anymore.

Sam Vaughan (samvaughan) wrote :

This is affecting me on an Ubuntu 16.04 fresh install. Uname -a gives:

4.13.0-37-generic #42~16.04.1-Ubuntu SMP Wed Mar 7 16:03:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

My laptop is a Thinkpad X1 Carbon, Intel i5 8th generation and Intel integrated graphics.

Suncatcher (suncatcher) wrote :

Confirm this on Xubuntu 17.10

Linux zimus 4.13.0-38-generic #43-Ubuntu SMP Wed Mar 14 15:20:44 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

affects: linux-hwe (Ubuntu) → linux (Ubuntu)
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