I need to restart my machine which I do not have physical access due to COVID. I enabled disk encryption on my Ubuntu when I installed it back when things were normal. Every-time I needed to restart the machine I was in the office to enter the password to decrypt the disk. I now work from home and I do not have the luxury to go the office any time soon. Because of Nvidia driver mismatch, I need to restart my machine for that problem to go away. As you might know, I will lose my machine due to the disk password prompt which holds the machine from completing the booting process. Is there a way to disable the disk encryption password prompt remotely? I have full access from my SSH and I also have root permissions. Thanks in advance
1966
I recently installed Ubuntu 12.10 and it requires a passphrase to boot up (I installed it with an encrypted file system).  Do I have to reinstall to change to a standard unencrypted file system?
123416
I have a .vhd image of a BitLocker encrypted drive.   When I mount and double click the drive, BitLocker wants me to enter a 48-digit recovery key and doesn't ask for a password.  Why is that so and how can I enter a password instead?    Note: I don't have either the key or the password of this drive. I'm trying to brute force the password using forensic software.
29083
I'm running 13.10 Saucy. If I didn't enable disk encryption during installation, is there any way to enable it post facto?    I found , which says that encryption has to happen at install time, but it's also referring to Fedora. I can easily boot into a live disk if there's any way to do it from there.
97588
i am stuck with a big problem.  I have encrypted my linux drive with LUKS and now I can't remember it. During boot, it prompts me for the passphrase, but I went into troubleshooting mode and deleted the entry from /etc/crypttab so at least I can boot now into my account but that doesn't solve the problem. I can't access my drive /dev/sda5.  Can someone please show me a way to crack the passphrase or is there no way around it.
30912
While turning on my laptop, I wanted to disable a possibility to use "F10" boot menu (maybe it's F12 on other models). I want that no-one should be able to enter my DESKTOP (Even though I'm also using user-account password at Windows login screen). So, if BOOT is available, someone might use LIVE-CD to access my pc.  How to do that?
61428
I have a HD protected by Bitlocker. Login, password and restorekey are unknown and all I want to do is wipe the whole drive. When I try to boot from a windows installation cd I have no access to the drive since it asks for the restore key I don't have.  Is there a way to format the whole drive to make it usable again?
47631
I have a Lenovo T480s that I connect to my dock at work every day. Today all of a sudden my monitors remain black after I'm prompted for the encryption key for my disk. Usually, the login prompt should turn up.   Booting my machine without the dock works fine. Any ideas to how I can fix this? Any help is appreciated.
21241
I use a remote desktop program (usually ) to connect to a Windows machine everyday. The remote computer has a fixed IP address, and if the computer is on and responsive, I can access it and even reboot the computer remotely if necessary.  Unfortunately, if the remote computer freezes (for example, if it gets a blue screen), as far as I know, I can't use a remote desktop solution to restart it. Similarly, if my computer is off, I can't use remote desktop to boot it.   I know that one solution is to ask somebody who is physically near the computer to press the reboot or power on button, but I am opening this thread because I am interested in solutions that do not require the physical presence of people to turn on or reboot a remote frozen computer.  Is this possible? If so, what are my options?
89358
What am I missing?  I change the root password on a unix machine, then try to log in with that password.  PasswordAuthentication is set to yes in sshd_config and the sshd daemon has been restarted.  This behavior happens whether I log in remotely or locally:  root@ip-10-0-0-155:~# passwd Enter new UNIX password:  Retype new UNIX password:  passwd: password updated successfully root@ip-10-0-0-155:~# ssh root@127.0.0.1 root@127.0.0.1's password:  Permission denied, please try again. root@127.0.0.1's password:
107410
Since the last update of Ubuntu 14.04, when I press the sleep button in my laptop, a pop-up window appears with "Authentication is required for suspending the system".  Password is not requested when closing the lid. However, this doesn't work when another monitor is plugged in.  Is there anything that can be set up (in sudoers or somewhere else) to avoid this password prompt?
111711
When I boot system in to recovery mode from GRUB menu, I can get in to all powerful root without entering any password, thus insecure.  How I can secure this and ensure that a password is asked every time I attempt to access root in recovery mode?
97803
Hi I'm trying to access my home directory on my laptop hard drive through a live usb. I cannot boot into the OS on the hard drive and the home and root directory is encrypted. I have the encryption key but when I try to run the tool to gain access it pops up for a second then disappears and when I run the command in Terminal it says "Encrypted private directory is not setup properly". What are my options on getting into the directory? I really need to get the data off my laptop.
91827
I messed up my system earlier, I was greeted with a black screen, when booting in to Ubuntu. When I started up my laptop, I selected the recovery option from the grub menu, and chose fallback at root terminal. I saw that I was able to use the add user command, with it, I probably could use to create a privileged user on my machine.   Isn't that a security issue?  One could have stolen my laptop and at startup chose recovery and add another user, I'm fudged then. Including my data.  Come to think of it, even if you somehow remove that entry, one could boot from a live-CD, get a chroot up and running and then add another user, with the right privileges that allows it to see all my data.   If I set the BIOS to boot at my HD only, no USB, CD/DVD, Network startup, and set a BIOS password, it still wouldn't matter, because you'd still have that grub recovery startup entry.  I am fairly certain that someone from China, Russia can't hack my Ubuntu Trusty Tahr, from the network, because it's secure like that. But, if one has physical access to my - your - machine, then, well, that's why I'm asking this question. How can I secure my machine so that hacking through physical access is not possible?    Bug Report:
89612
is there a way to disable password authentication completely? The command line is the following:  ssh -o KbdInteractiveAuthentication=no -o PasswordAuthentication=no machine"    it STILL asks for a password.  Of course I would like to do this without touching the server, if possible.
96484
I don't like getting online results when searching in my dashboard, so I went to System Settings &gt; Security &amp; Privacy &gt; Search, and I turned the setting off:    But when I restart my machine, the setting is always reset to:    So how can I permanently disable it without it turning on again after a restart?  Information Update:  I have had a look at the post that this has been marked as a possible duplicate of, and I don't think that my question really is a duplicate of it, as the other question is asking about how to set it globally, and I am not, I am only wanting to set it for one user, so the fact that it is not global is not the problem, the problem is that it is not sticking for that one user, and just resetting to its default state after a restart. In fact, I don't want it to be set globally, and the answers from the other question only really explain how to do that.    OS Information:  Description:    Ubuntu 15.04 Release:    15.04   Package Information:  unity:   Installed: 7.3.2+15.04.20150420-0ubuntu1   Candidate: 7.3.2+15.04.20150420-0ubuntu1   Version table:  *** 7.3.2+15.04.20150420-0ubuntu1 0         500 http://gb.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages         100 /var/lib/dpkg/status
88384
Did a fresh install of Ubuntu 17.10 a few days ago on my Lenovo Thinkpad Edge (using an existing home directory on a different partition).  When I close the lid and put it to sleep, on waking it I can no longer login. Sometimes it spends ages checking the password, then says the password is wrong. Sometimes I can't even enter anything into the password box. To fix this I have to shut down and restart. Login always works fine on a restart.  Any help?
43416
A few months ago I set full disk encryption during installation of Ubuntu 17.10. Now, I've decided to upgrade. The upgrade ran to the end without any problems. However, after reboot I am not able to log into my encrypted disk.  Where can be the problem? I am 100% sure I press the "right keys" on the keyboard, but technically I don't know what I am writing because of "*" characters and maybe after upgrade my keyboard layout changed. I use some characters which might be somewhere else on the keyboard. What language is default after upgrade?   By the way, I've already tried Caps-lock, but still no luck.  Help will be really appreciated. I am not a fan of installing my system and all backups over and over again.