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How to prevent cleaning lady from hunging my lock screen in ubuntu 16.04

Ubuntu 12.04 LTS often get a black screen with mouse cursor when trying to resume from lock screen.How do I change the length of time the lock screen appears for?How do I avoid having to unlock twice when using xtrlock?Lock screen does not unlock with correct password Gnome and Ubuntu 14.04Disable numlock warning on lock screen for notebookUnlocking at the lock screen failsStrange lock screen on Ubuntu 16.04How to lock the screen in XUbuntu 16.04Keyboard mouse won't respond after lock Ubuntu 16.04Ubuntu 18.10: Screen lock options grayed out

1

In my workplace I'm using Ubuntu 16.04 with unity, standard installation. When I'm leaving my office I lock my screen (ctrl+alt+l). At evening cleaning lady comes and clean our office. Few time already I get back to work in the morning and my headphones are on my keyboard. My lock screen is hung, I can't clear password field, can't type anything, can't use any other controls on lock screen (reboot, turn off button etc.). Mouse is working but clicking does nothing. Probably because input password field took huge input overnight and broke everything else. Cleaning lady "hacked" my computer :)

How can I prevent this? Can I somehow limit how many characters can be passed to password input? Can I block lock screen until I use some keyboard keys combination to enable password input? Something similar to ctrl+alt+del in windows before I can input password to lock screen?

//EDIT
As @bytecommander wrote there was a bug for this and it is supposed to be fixed but somehow this does not work on my machine https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1538615

$ apt policy unity-greeter                                                                                                                                            

unity-greeter:

  Installed: 16.04.2-0ubuntu1

  Candidate: 16.04.2-0ubuntu1

  Version table:

 *** 16.04.2-0ubuntu1 500

        500 http://pl.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

        100 /var/lib/dpkg/status

16.04 unity lock-screen

share|improve this question

edited 15 mins ago

piotrekkr

asked 1 hour ago

piotrekkrpiotrekkr

218139

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Power it down, take it home with you, unplug the keyboard if it's not a laptop, tell hr, AFAIR there's not much you can do security wise once someone physically gets a hold of your machine
  
  – j-money
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @j-money I don't think the lady attempts to hack the machine but rather think she just thoroughly cleans the keyboard thereby pressing all the keys. A dust cover and/or this note might help.
  
  – PerlDuck
  31 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @PerlDuck maybe that's what she wants you to think!! (couldn't resist)
  
  – j-money
  27 mins ago
  

  
  
  
  

add a comment | 

1

In my workplace I'm using Ubuntu 16.04 with unity, standard installation. When I'm leaving my office I lock my screen (ctrl+alt+l). At evening cleaning lady comes and clean our office. Few time already I get back to work in the morning and my headphones are on my keyboard. My lock screen is hung, I can't clear password field, can't type anything, can't use any other controls on lock screen (reboot, turn off button etc.). Mouse is working but clicking does nothing. Probably because input password field took huge input overnight and broke everything else. Cleaning lady "hacked" my computer :)

How can I prevent this? Can I somehow limit how many characters can be passed to password input? Can I block lock screen until I use some keyboard keys combination to enable password input? Something similar to ctrl+alt+del in windows before I can input password to lock screen?

//EDIT
As @bytecommander wrote there was a bug for this and it is supposed to be fixed but somehow this does not work on my machine https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1538615

$ apt policy unity-greeter                                                                                                                                            

unity-greeter:

  Installed: 16.04.2-0ubuntu1

  Candidate: 16.04.2-0ubuntu1

  Version table:

 *** 16.04.2-0ubuntu1 500

        500 http://pl.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

        100 /var/lib/dpkg/status

16.04 unity lock-screen

share|improve this question

edited 15 mins ago

piotrekkr

asked 1 hour ago

piotrekkrpiotrekkr

218139

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Power it down, take it home with you, unplug the keyboard if it's not a laptop, tell hr, AFAIR there's not much you can do security wise once someone physically gets a hold of your machine
  
  – j-money
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @j-money I don't think the lady attempts to hack the machine but rather think she just thoroughly cleans the keyboard thereby pressing all the keys. A dust cover and/or this note might help.
  
  – PerlDuck
  31 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @PerlDuck maybe that's what she wants you to think!! (couldn't resist)
  
  – j-money
  27 mins ago
  

  
  
  
  

add a comment | 

In my workplace I'm using Ubuntu 16.04 with unity, standard installation. When I'm leaving my office I lock my screen (ctrl+alt+l). At evening cleaning lady comes and clean our office. Few time already I get back to work in the morning and my headphones are on my keyboard. My lock screen is hung, I can't clear password field, can't type anything, can't use any other controls on lock screen (reboot, turn off button etc.). Mouse is working but clicking does nothing. Probably because input password field took huge input overnight and broke everything else. Cleaning lady "hacked" my computer :)

How can I prevent this? Can I somehow limit how many characters can be passed to password input? Can I block lock screen until I use some keyboard keys combination to enable password input? Something similar to ctrl+alt+del in windows before I can input password to lock screen?

//EDIT
As @bytecommander wrote there was a bug for this and it is supposed to be fixed but somehow this does not work on my machine https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1538615

$ apt policy unity-greeter                                                                                                                                            

unity-greeter:

  Installed: 16.04.2-0ubuntu1

  Candidate: 16.04.2-0ubuntu1

  Version table:

 *** 16.04.2-0ubuntu1 500

        500 http://pl.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

        100 /var/lib/dpkg/status

16.04 unity lock-screen

share|improve this question

edited 15 mins ago

piotrekkr

asked 1 hour ago

piotrekkrpiotrekkr

218139

$ apt policy unity-greeter                                                                                                                                            

unity-greeter:

  Installed: 16.04.2-0ubuntu1

  Candidate: 16.04.2-0ubuntu1

  Version table:

 *** 16.04.2-0ubuntu1 500

        500 http://pl.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

        100 /var/lib/dpkg/status

share|improve this question

edited 15 mins ago

piotrekkr

asked 1 hour ago

piotrekkrpiotrekkr

218139

share|improve this question

edited 15 mins ago

piotrekkr

asked 1 hour ago

piotrekkrpiotrekkr

218139

asked 1 hour ago

piotrekkrpiotrekkr

218139

asked 1 hour ago

piotrekkrpiotrekkr

218139

2 Answers
2

active

oldest

votes

4

Seems like your cleaning lady has successfully managed to emulate a cat.

https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1538615

There was a bug in unity-greeter in 14.04 and up to 16.04, which caused the lock screen to become unresponsive when there has been excessive keyboard input for some time (figuratively and literally a "cat on the keyboard").

It should be fixed since unity-greeter version 16.04.2-0ubuntu1 though by implementing a character limit. Please check your installed version with

apt policy unity-greeter

and make sure your system is fully updated with

sudo apt update ; sudo apt upgrade

share|improve this answer

answered 1 hour ago

Byte CommanderByte Commander

65.2k27178300

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have version with fix: apt policy unity-greeter unity-greeter: Installed: 16.04.2-0ubuntu1 Candidate: 16.04.2-0ubuntu1 Version table: *** 16.04.2-0ubuntu1 500 and apparently it is not fixed...
  
  – piotrekkr
  49 mins ago
  

  
  
  
  

add a comment | 

1

You can install xtrlock:

$ sudo apt-get install xtrlock

And made a combination for lock screen and lock keyboard, until you press the combination again. Make it hard and then the cleaning lady have a hard chance to hit and "hack" your computer.

I hope it help you with that. Regards

share|improve this answer

answered 59 mins ago

SantiSanti

132

New contributor

Santi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

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4

Seems like your cleaning lady has successfully managed to emulate a cat.

https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1538615

There was a bug in unity-greeter in 14.04 and up to 16.04, which caused the lock screen to become unresponsive when there has been excessive keyboard input for some time (figuratively and literally a "cat on the keyboard").

It should be fixed since unity-greeter version 16.04.2-0ubuntu1 though by implementing a character limit. Please check your installed version with

apt policy unity-greeter

and make sure your system is fully updated with

sudo apt update ; sudo apt upgrade

share|improve this answer

answered 1 hour ago

Byte CommanderByte Commander

65.2k27178300

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have version with fix: apt policy unity-greeter unity-greeter: Installed: 16.04.2-0ubuntu1 Candidate: 16.04.2-0ubuntu1 Version table: *** 16.04.2-0ubuntu1 500 and apparently it is not fixed...
  
  – piotrekkr
  49 mins ago
  

  
  
  
  

add a comment | 

4

Seems like your cleaning lady has successfully managed to emulate a cat.

https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1538615

There was a bug in unity-greeter in 14.04 and up to 16.04, which caused the lock screen to become unresponsive when there has been excessive keyboard input for some time (figuratively and literally a "cat on the keyboard").

It should be fixed since unity-greeter version 16.04.2-0ubuntu1 though by implementing a character limit. Please check your installed version with

apt policy unity-greeter

and make sure your system is fully updated with

sudo apt update ; sudo apt upgrade

share|improve this answer

answered 1 hour ago

Byte CommanderByte Commander

65.2k27178300

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have version with fix: apt policy unity-greeter unity-greeter: Installed: 16.04.2-0ubuntu1 Candidate: 16.04.2-0ubuntu1 Version table: *** 16.04.2-0ubuntu1 500 and apparently it is not fixed...
  
  – piotrekkr
  49 mins ago
  

  
  
  
  

add a comment | 

Seems like your cleaning lady has successfully managed to emulate a cat.

https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1538615

There was a bug in unity-greeter in 14.04 and up to 16.04, which caused the lock screen to become unresponsive when there has been excessive keyboard input for some time (figuratively and literally a "cat on the keyboard").

It should be fixed since unity-greeter version 16.04.2-0ubuntu1 though by implementing a character limit. Please check your installed version with

apt policy unity-greeter

and make sure your system is fully updated with

sudo apt update ; sudo apt upgrade

share|improve this answer

answered 1 hour ago

Byte CommanderByte Commander

65.2k27178300

apt policy unity-greeter

sudo apt update ; sudo apt upgrade

share|improve this answer

answered 1 hour ago

Byte CommanderByte Commander

65.2k27178300

answered 1 hour ago

Byte CommanderByte Commander

65.2k27178300

answered 1 hour ago

Byte CommanderByte Commander

65.2k27178300

1

You can install xtrlock:

$ sudo apt-get install xtrlock

And made a combination for lock screen and lock keyboard, until you press the combination again. Make it hard and then the cleaning lady have a hard chance to hit and "hack" your computer.

I hope it help you with that. Regards

share|improve this answer

answered 59 mins ago

SantiSanti

132

New contributor

Santi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

1

You can install xtrlock:

$ sudo apt-get install xtrlock

And made a combination for lock screen and lock keyboard, until you press the combination again. Make it hard and then the cleaning lady have a hard chance to hit and "hack" your computer.

I hope it help you with that. Regards

share|improve this answer

answered 59 mins ago

SantiSanti

132

New contributor

Santi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

You can install xtrlock:

$ sudo apt-get install xtrlock

And made a combination for lock screen and lock keyboard, until you press the combination again. Make it hard and then the cleaning lady have a hard chance to hit and "hack" your computer.

I hope it help you with that. Regards

share|improve this answer

answered 59 mins ago

SantiSanti

132

New contributor

Santi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$ sudo apt-get install xtrlock

share|improve this answer

answered 59 mins ago

SantiSanti

132

New contributor

Santi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

answered 59 mins ago

SantiSanti

132

New contributor

Santi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

answered 59 mins ago

SantiSanti

132