frozen login window' unable to login; must reboot' cursor moves no mouse clicks

Bug #1743423 reported by Stan Osborne
256
This bug affects 1 person
Affects Status Importance Assigned to Milestone
lightdm (Ubuntu)
Triaged
Undecided
Unassigned

Bug Description

Denial o9f Service caused by holding a key that repeats for a long time. eg. cat takes nap on keyboard, cloting piled on keyboard

Before submitting bug report I checked online and saw many other reports goin back about 15 months. I saw no mention of updates or how to reproduce. In my case the cursor continues to move around, but unable to use cursor to reboot. I can only use power off as none of they keys are working.

Good thing the power button results are acceptable. and most applications fully recover.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: lightdm 1.18.3-0ubuntu1.1
ProcVersionSignature: Ubuntu 4.4.0-109.132-generic 4.4.98
Uname: Linux 4.4.0-109-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
Date: Sun Jan 14 19:20:22 2018
InstallationDate: Installed on 2016-02-22 (692 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
ProcEnviron:
 LANGUAGE=en_US
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Stan Osborne (stan-ana) wrote :
information type: Private Security → Public Security
Revision history for this message
spike speigel (frail-knight) wrote :

Not sure if I have the same issue, but if I let my system go to sleep/suspend at the login screen, when I resume I cannot click in the password prompt and thus cannot type my password to login. For some reason the mouse will not give the password prompt text box focus.

It will give the password prompt text box focus if I first select another option from the user drop down list such as "Other..." or any other user, and then select my user again. Suddenly I can enter my password. Maybe this workaround might work for you as well.

Like I said, your issue may be different.

Changed in lightdm (Ubuntu):
status: New → Triaged
Revision history for this message
Stan Osborne (stan-ana) wrote :

This problem was returning intermittently. I am now moving on to a more recent release of Ubuntu so I no longer have am rebooting this particular OS version.

To post a comment you must log in.
This report contains Public Security information  
Everyone can see this security related information.

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.