Questions tagged [lock]

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273 votes
5 answers
727k views

E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)

I'm trying to run this command in the terminal: sudo apt install software-properties-common This is the error message I get: E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource ...
GoodNite's user avatar
  • 2,731
53 votes
3 answers
217k views

Could not get lock /var/lib/apt/lists/lock

when I try to apt-get update I'm getting the below error, E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable) E: Unable to lock directory /var/lib/apt/lists/
hari's user avatar
  • 531
52 votes
7 answers
257k views

Folders showing lock icon

Whenever I open my documents, all the folders in it are displayed with a lock icon. Therefore, I cannot delete any file or folder in it. I tried changing the root access using sudo chmod user:...
Saket's user avatar
  • 873
45 votes
6 answers
69k views

How to unlock locked session?

I'm using xubuntu 14.04 on AMD based hardware. It is configured not to lock a session and not to power down automatically on longer idle times. There have been no recent changes or new software ...
user215199's user avatar
45 votes
5 answers
173k views

Can't format / delete locked partition from GParted?

I can't format my hard disk for Ubuntu installation. It has Fedora installed in it. I wonder how to unlock the locked partition to delete and format it, since I am stuck at installing Ubuntu. I am now ...
owl's user avatar
  • 4,951
38 votes
1 answer
87k views

'sudo apt-get install' is showing "Not using locking for read only file /var/lib/dpkg/lock" warning on Ubuntu Touch

I just installed Ubuntu Touch on my Nexus 7. Unfortunately I can't install anything from the terminal app: If I enter: sudo apt-get install yasm -y git make g++ build-essential libminiupnpc-dev I get:...
Clipper Dashing Wave's user avatar
34 votes
3 answers
140k views

How do I unlock /var/lib/dpkg/lock? [duplicate]

I attempted to install dropbox on my Ubuntu system, but now I am unable to install or uninstall any software. I get this error: E: Unable to lock the administration directory /var/lib/dpkg/lock? I ...
akp234's user avatar
  • 443
21 votes
4 answers
76k views

How do I enable Scroll Lock?

I need to enable scroll lock so I can toggle lights on my keyboard. This works on Arch.Funny thing it doesn't work on Ubuntu. http://linuxtechie.wordpress.com/2008/04/07/getting-scroll-lock-to-work-...
Anton Ciprian Vasilache's user avatar
17 votes
3 answers
31k views

Lock and Unlock from USB disk (pendrive)

Is there Any program for locking and unlocking my Ubuntu machine using a flash- drive? For instance, when I take out the usb flash drive, the computer locks automatically and when I put in the flash ...
Prabin Dahal's user avatar
16 votes
1 answer
3k views

Ubuntu 22.04 won't wake after screen lock / screen dim

I have a fresh installation of Ubuntu 22.04 and it won't wake after screen lock. This is true for both, X11 and Wayland (also disabling Wayland for gdm3 doesn't help). System suspend works fine, only ...
Leszek's user avatar
  • 2,939
15 votes
4 answers
47k views

Unable to use package manager due to "exclusive lock" error [duplicate]

My synaptic package manager in ubuntu is giving error: Unable to get exclusive lock This usually means that another package management application(like apt-get or aptitude) is already running....
dashingvimeet's user avatar
15 votes
2 answers
14k views

Lock Tmux Session With Vlock

I have just installed tmux and vlock. When I try to perform the lock-session command, my terminal flashes and then nothing happens. Is there something in my .tmux.conf that must be added to tell tmux ...
kzh's user avatar
  • 866
15 votes
4 answers
18k views

iOS 7 Locked Bug via Ubuntu 13.10

I wanted to bring up an issue with the latest Ubuntu release that I hope can be solved. Although I will agree with the community that iOS 7 is not the most open platform release, it still is my desire ...
justinpage's user avatar
13 votes
1 answer
6k views

How do I prevent the blank screensaver when using keyboard shortcut to lock the computer?

I lock my computer a lot, and was wondering if there was a way to get the lock screen when I hit Ctrl + Alt + L. Right now when I use that key combination it turns the screen black, and I have to hit ...
user81572's user avatar
  • 133
13 votes
2 answers
19k views

How to disable the lock screen on Lubuntu?

I want to disable the lock screen after suspend session of Lubuntu. But it seems Lubuntu doesn't have a lot of fans. Can anyone help me on this issue? I don't want to lock the screen after suspension....
Christy James's user avatar
13 votes
6 answers
39k views

Lubuntu enforces screen lock

I can't disable screen lock in Lubuntu. In Power management I have it unchecked. There is another option "Enable light locker" in the "Light locker settings". I also have this unchecked but I still ...
user568021's user avatar
11 votes
3 answers
26k views

Mouse locks when keys are pressed

Whenever I play Minecraft and try to walk and turn at the same time, I can't. When I hit keys on my keyboard, my mouse locks in place. (This happens both in and outside of Minecraft) (Ubuntu 10.04 ...
ajtgarber's user avatar
  • 111
11 votes
3 answers
2k views

Only require password when waking up from suspend when suspended for 10 minutes

I generally want my laptop to be locked when it's suspended but not when I just suspended it because there is a use case in which entering my password after my laptop woke up from suspend is pretty ...
UTF-8's user avatar
  • 5,700
10 votes
0 answers
24k views

Installation Error, "Unable to lock the administration directory" [duplicate]

Whenever I try to install any software through Terminal or Software on my Ubuntu 11.04, I'm getting this response: In Terminal: E: Could not get lock /var/lib/dpkg/lock - open (11: Resource ...
kern's user avatar
  • 1,429
8 votes
3 answers
5k views

CPU usage goes to 100% when I lock the screen

Whenever I lock the screen, after a certain amount of time, the CPU and the CPU fan go to their limits, and they return back to normal the moment I unlock the screen again (as shown by psensor). How ...
gianni's user avatar
  • 403
8 votes
2 answers
2k views

How to lock without turning the screen (monitor) off?

Due to a recent bug, each time my screen turns off, I cannot get it back on. Currently, the screen starts turning off after the computer is locked - which effectively means that I cannot lock my ...
jcora's user avatar
  • 920
7 votes
4 answers
13k views

"Lock" one specific file so that I nor root no longer have access to it any more

To combat procrastination, I edit my /etc/hosts file by adding time-wasting websites and pointing them to localhost. However, the flesh is weak and I often find myself reverting my changes. I was ...
BioGeek's user avatar
  • 401
7 votes
2 answers
5k views

Not Locking Screen after X minutes

Since I upgraded from Ubuntu 11.10 to 12.04 (and also 12.10 problem still occurs), my notebook does not lock the screen automatically. I wen into "Brightness and Lock" settings, Set "Turn Screen of ...
yurividal's user avatar
  • 1,772
6 votes
8 answers
16k views

CTRL-ALT-L not locking screen Ubuntu 15.04 w/ Gnome

Title says it all. This is a feature I need. It's probably something easy, but googling it just gave me a hodgepodge of unrelated stuff.
David Litton's user avatar
6 votes
2 answers
4k views

Lock Ubuntu Server 12.0.4

How do I lock Ubuntu server screen without installing gnome screensaver? I'm running the server with only the console without desktop installed.
Creems's user avatar
  • 63
6 votes
3 answers
9k views

How to disable locking in LibreOffice?

I want to disable file locking in LibreOffice, i.e., the creation of a hidden lock file in the directory of an opened document. The advice of the official documentation to comment out the second of ...
Alex1357's user avatar
  • 1,122
6 votes
2 answers
9k views

What is the purpose of lock file? [duplicate]

I have seen a file named lock in /var/cache/apt/archives in my Ubuntu 14.04. This file has only root access. When I try to display the contents of this file using sudo nano lock the file seems empty. ...
Anandu M Das's user avatar
  • 2,233
6 votes
6 answers
15k views

Ubuntu 18.04 opening system setting logs me out

I've recently installed Ubuntu 18.04 in a dual-boot configuration with Windows 10. I noticed today that, when trying to open system settings, Ubuntu seems to log me out to the lock screen. When I log ...
jomobro's user avatar
  • 111
6 votes
2 answers
5k views

Unable to lock screen after upgrading to 12.04

After upgrading to 12.04, I can't lock my screen anymore, has anyone encountered this and found a solution? Basically the keyboard shortcut does nothing and even if I select the lock option from the ...
Arvy Budiarto's user avatar
6 votes
2 answers
7k views

How to unlock file, locked by a process

The file is locked by a process, java in my case. I only want the lock to be released. lsof | grep /home/user/workspace1 A temporary solution was to 'End Process' from 'System Monitor'. But ...
arpit's user avatar
  • 255
5 votes
1 answer
40k views

E: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 5200 (apt) [duplicate]

E: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 5200 (apt) N: Be aware that removing the lock file is not a solution and may break your system. E: Unable to acquire the dpkg ...
David Paul Browning's user avatar
5 votes
1 answer
2k views

Screen does not lock on suspend

I have recently updated to 20.04 and now when I suspend, either waiting for a long time, closing the lid or manually suspending, the screen does not automatically lock. I've tried setting the 'lock on ...
Christian Fares's user avatar
5 votes
2 answers
19k views

sudo useradd: cannot lock /etc/passwd; try again later (no lock files)

When doing this on Ubuntu server 14.04: camilstaps@localhost:~$ sudo useradd --home-dir /var/www/xxx.camilstaps.nl/ --no-create-home --root /var/www/xxx.camilstaps.nl/ --shell /bin/sh xxx I'm getting ...
user avatar
5 votes
0 answers
416 views

After closing the lid, no screen display and computer hangs. Have to restart everytime.(14.10)

When I lock my laptop and close the lid, and again after sometime,when I open the lid, their is a blank screen with no display and even if I press any key(s), my system does not wake up.I have to ...
starkjarvis's user avatar
4 votes
1 answer
2k views

Lock builtin laptop keyboard but keep an external USB keyboard functioning

I have a laptop but also an external USB keyboard connected to it. Is it somehow possible to lock the built-in laptop keyboard (i.e. keys pressed should have no effect) but keep the external one ...
zegkljan's user avatar
  • 428
4 votes
4 answers
29k views

How to lock a folder from terminal

Is there any way to lock a folder from terminal(protected with password) without using any third party applications like truecrypt,crypteeper nor giving user permissions. It was just like whenever a ...
Avinash Raj's user avatar
  • 78.5k
4 votes
1 answer
7k views

Unable to create lock file when starting mongod via upstart

I'm trying to set up my mongodb upstart script to work as an arbiter, but I'm having permission problems when trying to create the lock file in the data directory: Tue Apr 1 17:11:01 [initandlisten] ...
m90's user avatar
  • 143
4 votes
2 answers
977 views

How does apt-get use /var/cache/apt/archives/lock?

I am curious of how /var/cache/apt/archives/lock used in apt-get. I found out that it is a regular file and I think it is used by calling flock on it every time apt-get needs to make some changes to /...
JiaHao Xu's user avatar
  • 152
4 votes
1 answer
4k views

Update: Failed to lock /var/cache/apt/archives/lock

I am running the upgrade(12.10 to 13.04) through terminal and it keeps getting stuck at this: Failed to lock /var/cache/apt/archives/lock What do I do? I have root access. I have no idea what else ...
user161940's user avatar
4 votes
1 answer
4k views

Lock Terminal and Suspend from Terminal

I am trying to lock and suspend from the terminal. I tried: pmi action suspend | at now + 1 min And then typed exit But both that and vlock kill the running command. Is there a way to lock the ...
JGreen's user avatar
  • 261
4 votes
1 answer
2k views

Is it possible to permanently lock launcher icons?

I have installed Ubuntu onto my parents laptop. They are around their 80s. They manage to remove icons from the launcher accidentally again and again. I have to put them back manually, only to find ...
Aleve Sicofante's user avatar
4 votes
1 answer
1k views

What is the gksudo "lock taken...exiting" warning and how do I resolve it?

I recently run into problems when using gksudo. For example, the Truecrypt installation fails because of following error: ** (gksudo:3262): WARNING **: Lock taken by pid: -1. Exiting. PID must be a ...
f4lco's user avatar
  • 477
4 votes
1 answer
871 views

Why does apt not display an error message even if flock is used?

Running script #!/bin/bash ( flock 9 # ... commands executed under lock ... fuser -v /var/lib/dpkg/lock apt-get -f --assume-no install ) 9>/var/lib/dpkg/lock as superuser does not display ...
jarno's user avatar
  • 5,600
3 votes
2 answers
2k views

How can I run a command when a usb device is (dis-) connected?

I am new to linux, and this is probably a noob question, so, sorry for that. I am using a linux PC in my workshop, and I would like to automate the workshop. That's why I have installed a power strip ...
LenDuck24's user avatar
3 votes
2 answers
2k views

Ubuntu 12.04 forgetting XModmap settings often

I have the following contents in my ~/.Xmodmap file. It seems a couple times a day (without rebooting or logging out) I need to rerun the command "xmodmap ~/.Xmodmap" to reset my settings. The only ...
PKKid's user avatar
  • 266
3 votes
1 answer
1k views

Apache startup script keeps lock file open

I am writing a bash script for a backup task. Among other things (file system freeze, database lock, snapshots,...) it involves shutting down Apache and restarting it after the Backup. Since that ...
mastov's user avatar
  • 193
3 votes
1 answer
2k views

Lock file and release it

I have multiple threads running from different terminal windows in ubuntu trying to write to the same file. I would like to lock the file via terminal while writing so that the other thread(s) has ...
Vignesh T.V.'s user avatar
3 votes
1 answer
1k views

Explanation of visudo lock file

When I edit /etc/sudoers using visudo, I think it saves to sudoers.tmp, checks it for errors, then copies it to the real /etc/sudoers. However, I can't confirm my theory (how the lock file is used) ...
Tosh's user avatar
  • 409
3 votes
1 answer
5k views

how to unlock /var/cache/apt/archives/lock

I was trying to install firefox from deb instead of firefox snap because the firefox extensions will not work in the snap version, but the system tried to re-install snap version instead. The dialog ...
CrashedAgain's user avatar
3 votes
1 answer
714 views

How to launch program on lock and close it on unlock [duplicate]

Have siblings who like to "play" with my laptop by waking it from suspension and then typing random keys on the keyboard into the password field. Afterwards, they always deny it. I plan to install ...
KI4JGT's user avatar
  • 1,820

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