Latest Ubuntu related questions

Score: 0
Password protect pdf with terminal and bulk protect
ng flag

There are a lot of questions similar to what I am looking for, but I believe my use case is different.

I have learned of two ways to protect a PDF via the command line:

qpdf --encrypt test123 test123 40 -- input.pdf doc_with_pass.pdf

And:

pdftk [mydoc].pdf output [mydoc.128].pdf owner_pw [foopass]

However, I need a way to protect files without the password showing, similar to the way we type a password ...

Score: 2
Can't get sound on my Macbook Pro 2016
gb flag

new to Ubuntu here and am running into an issue. I installed Ubuntu 20.04 on my 2016 Macbook Pro (Dual boot with OSX via rEFIt) and I get no sound. I have tried looking at alsamixer to make sure I'm not muted, I've tried pavucontrol which shows a bar in the "Output devices" tab, which moves up and down as if it's detecting sound, but there isn't anything in the speakers.

I tried this guide as wel ...

Score: 0
TrueHerobrine avatar
Unable to connect to a single WiFi network. Can connect to others
kr flag

currently using Ubuntu and just started today. I would like help on finding out how to make my computer connect to my home WiFi. Tried searching for NetworkManager.conf, but that returned no results. Any help would be appreciated. Thanks!

Score: 0
nightwatch avatar
Import TB Profile from Apt TB78 to FlatpakTB91
tr flag

I want to change from apt installed Thunderbird 78 to flatpak install Thunderbird 91. What is the most efficient way to get my Thunderbird 78 profile to become my default flatpak Thunderbird 91 profile?

Using: Ubuntu 20.04

Profile Locations:

  • TB78 /home/user/.thunderbird
  • TB91 /home/user/.var/app/org.mozilla.Thunderbird

After trying the solution below, I get:

screenshot

This is the correct profile directory,  ...

Score: 0
SRY avatar
Why does the ubuntu 20.04 update fail me?
in flag
SRY
ubuntu# sudo apt update
Obj:1 http://dl.google.com/linux/earth/deb stable InRelease                  
Obj:2 http://security.ubuntu.com/ubuntu focal-security InRelease             
Obj:3 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu focal InRelease         
Obj:4 http://sv.archive.ubuntu.com/ubuntu focal InRelease                    
Obj:5 http://sv.archive.ubuntu.com/ubuntu focal-updates InRelease        ...
Score: 0
Minimize button of Firefox closes the window
in flag

Why does the minimize button on Ubuntu 20.04 close Firefox window? Similar questions didn't solve my problem. The favorites bar just reopens Firefox with a new session.

Score: 2
pserra avatar
Where can I find /lib/ld-lsb.so.3 for Ubuntu 21.04?
cn flag

I need to get a 32 bit ELF interpreter for an old binary.

file ./actlmgrd 
./actlmgrd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, interpreter /lib/ld-lsb.so.3, for GNU/Linux 2.6.18, BuildID[sha1]=74d9c7780145f113e746c1c1bccfb4d9264022bf, stripped

I was able to get the 64 bit variant in the lsb-core package, but I cannot find i386 equivalent.

Score: 0
216ann avatar
Unable to use the scanner on my HP 4520 All-In-One
in flag

I previously had issues with printing with my printer on Ubuntu 20.04.3 LTS Unable to use my HP 4520 All-In-One

After solving that problem with @Waltinator 's & other's help, I still am unable to scan using the scanner. I tried to understand the group permissions instructions on the above link but wasn't able to figure them out. For example, when I checked ls -l, it didn't show anything that appeared ...

Score: 0
ubuntu 21.04 goes into emergency mode because it cannot mount /boot
ng flag
Uri

The full history is:

Ubuntu did not boot, I suspect due to full hard disk I booted from usb mounted zfs hard disk and deleted some files

to mount the hard disk i had to set a mountpoint (couldn't get it to work otherwise), and after that worked i restored it

then I booted again regularly, but it went into emergency mode.

I typed journalctl -xb to look at the logs, and there is one red line which says t ...

Score: 0
WINXP with Ubuntu 20.04 dual boot problems
ch flag

upgraded my WINXP/Ubuntu computer to Ubuntu 20.04. Both WINXP and UBUNTU 20.04 are on separate hard drives. The grub display after installation of 20.04 showed both OSs but I could not get to WINXP from the grub display. Anyone know what I need to do to get WINXP to boot from the grub display. BTW, when I get to WINXP manually it runs fine. Also there is no trouble with running Ubuntu 20.04.

Tha ...

Score: 0
Vahid Alimohamadi avatar
shrink ext4 boot partition inside qemu image
nl flag

I need to reduce my bootable qemu image (which downloaded from glance) virtual size from 12G to 2G:

$ qemu-img info w.img
image: w.img
file format: raw
virtual size: 12 GiB (12884901888 bytes)
disk size: 1.67 GiB
$ sudo virt-df -h w.img
Filesystem                                Size       Used  Available  Use%
w.img:/dev/sda1                           11G        1.4G        10G   13%
w.img:/dev/sd ...
Score: 0
NFS client fails to mount with timeout on kernel 5.4.0-1057-aws
bo flag

On an Ubuntu 18.04.1 server, I am able mount AWS EFS filesystems with nfsv4.1 successfully.

Mounts work on kernel version 5.4.0-1056-aws but if i upgrade the kernel to 5.4.0-1057-aws the mounts stop working with a network timeout, due to port 111 being blocked (as its not needed for nfsv4.1)

Issue started to happen when apt daily automatically upgraded the kernel version.

I reproduced by rolling back k ...

Score: 1
Anthony Matarazzo avatar
Audio Distortion Ubuntu Studio using Jack Audio
ht flag

I just installed Ubuntu Studio on a newly purchased laptop. A Lenovo flex 5 14. There is an issue when using programs like hydrogen or ardour. The audio coming from the mixdown is very distorted. I have had this problem in the past several years ago. It was a mixer setting too high. However here I cannot find the problem. Using alsamixer, or qasmixer on multiple sliders does not seem to affect the quali ...

Score: 0
Ubuntu WiFi hotspot with LAN access but no internet
in flag

Is it possible to create an Ubuntu 20.04 hotspot where the connected devices do not have access to the internet, but those devices can be accessed on specific ports from the Ubuntu machine?

For example, if I have a smart device such as a camera connected to the hotspot I might want to access it's settings page on port 80 or rtsp on port 554, but I don't want it to be able to access the internet ( ...

Score: 2
Ubuntu Virtual Machine on a Apple Silicon (M1) macOS Host?
cn flag

There seems to be conflicting information online about this, and as it is new, I cannot ascertain yet the right information. I've opening this question to be a resource for us to vote on the best approach to running a Ubuntu Virtual Machine on a Apple Silicon (M1) macOS host machine.

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Much of an executive’s workday is spent asking others for information—requesting status updates from a team leader, for example, or questioning a counterpart in a tense negotiation. Yet unlike professionals such as litigators, journalists, and doctors, who are taught how to ask questions as an essential part of their training, few executives think of questioning as a skill that can be honed—or consider how their own answers to questions could make conversations more productive.

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