Questions tagged [ubuntu]

Please don't use this tag just because your system is running Ubuntu. Use it _only_ if your question is somehow specific to Ubuntu only. Note that https://askubuntu.com is specifically dedicated to Ubuntu questions.

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7 views

UFW Drop inbound ICMP requests from outside the local network

How do I use ufw to drop inbound icmp traffic from outside my local network? Local network/mask is 10.0.2.0/24.
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4 views

Login Loop Black Screen when opening terminal

I'm having a huge problem that is made of different small problems. I'm Caught in a login loop but when I call a terminal to fix the problem I end with a black screen asuming there is something wrong ...
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0answers
13 views

Access Ubuntu desktop remotely from Mac OS

I would like to be able to access my Ubuntu 18.04 desktop (not just terminal) from Mac OS (Mojave), and have tried a couple solutions, with less-then-desirable results: Installing google chrome ...
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0answers
27 views

Docker service not starting on new WSL2

Im trying to start docker in the brand new WSL2 with the following command : sudo service docker start then: sudo service docker status result : * Docker is running BUT on running the test ...
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1answer
6 views

I broke my Alt-drag windows feature on Ubuntu MATE 18.04 [on hold]

I just installed Ubuntu 18.04 MATE, and while fiddling with it and installing a ton of apps and configuration that I need for work, somehow I managed to make it so Alt-click-and-drag no longer moves a ...
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0answers
11 views

Ubuntu Server Installation media boots to weird installation menu

When I boot the Ubuntu Server installation disk, It boots to a weird screen with a ton of green OKs and text instead of the typical installation screen. I did manage to get to the installation screen ...
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0answers
35 views

hiDPI scaling fix for Davinci Resolve 16 in Gnome

I asked a similar question about hiDPI scaling here. This question regards fixing scaling on a specific application, the other question is about a universal hiDPI mode. I am running ubuntu derivative ...
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2answers
30 views

How to force hiDPI scaling mode on boot in Pop!_OS/Gnome

I asked a similar question about hiDPI scaling here. This question regards a universal hiDPI mode, the other question is about fixing scaling on a specific application. I am using a 4k monitor in ...
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0answers
13 views

Debian on Lenovo Flex 5?

Im planning to buy this laptop off ebay: https://www.ebay.com/itm/Lenovo-Flex-5-2-IN-1-14-FHD-Touch-8th-Gen-i7-8550U-8GB-512GB-SSD-Webcam-Win10/113737155372?hash=item1a7b43432c:g:MW8AAOSwpmhbu0vQ ...
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0answers
15 views

Ubuntu 16.04 LTS - Freezes on login startpage

I am facing the same problem like this guy: Ubuntu 16.04 - GUI freezes on login start page But it happened after installation Bumblebee. Nvidia geforce 940m
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0answers
14 views

Linux log file error saving to admin system [on hold]

How to save whole errors in the terminal to desktop file
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0answers
14 views

use Tor to redirect terminal command using HTTPTunnelPort

I am trying to redirect terminal commands through Tor. However i get the following error when I want to check my public IP address. $ curl https://ipinfo.io/ip curl: (35) OpenSSL SSL_connect: ...
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1answer
14 views

EACCES: permission denied when using sudo

I'm trying to install a node package using NPM, but it just gives a permission error. I could install packages without any issues yesterday, but for some reason it has stopped working. asgeir@...
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1answer
38 views

Disable *** stack smashing detected ***: <unknown> terminated

I'm running Ubuntu 18.04 and a simple program such as: #include <stdio.h> int main(int ac, char *av[ac+1], char **env) { char arr[8]; printf("0x%x\n", av); scanf("%s", arr); ...
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1answer
30 views

Persistent disk name /dev/sd'x', changing with almost every reboot

I'm dealing with an issue for a few days now which start pulling my hair. Hopefully someone here has some ideas to get my issue fixed :-). I have a big storage server with 24x 3,5" drives. These ...
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0answers
8 views

Verify repository integrity - reprepro

I have a local repository that I made using reprepro. However, a back up utility recently messed with this repo without me realizing it. Is there a way I can check this repository with reprepro or ...
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0answers
7 views

XFCE4 notifications over SSH on ubuntu

Task is simple: Send desktop notifications over SSH. I know for this I have to specify not only DISPLAY=:0 but also the dbus address for the user that is running the GUI. In my case, the uid is 1000. ...
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0answers
17 views

How to reset the terminal cache in the same session properly?

Currently, I am benchmarking the running time of a package from the terminal. When I use a command with the same file repeatedly, running time was much less than the first one, and this made me think ...
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0answers
9 views

How to Setup the Network Interface from Ubuntu / KVM to Connect to Windows 7 VM

i want to create a Gameserver in a Windows VM on my Ubuntu 16.04 Server with KVM. I have already installed the vm and it is running properly. I deactivated the Windows Firewall directly in the VM. ...
1
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1answer
31 views

Handling null (empty array) while converting json to csv with jq?

When trying to convert json to csv, I get an error about null with the following jq query: printf "[]" | jq -r '(map(keys) | add | unique) as $cols | map(. as $row | $cols | map($row[.])) as $rows | $...
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0answers
22 views

Permissions Not preperly set Ubuntu Samba 4

I am in the middle of permissions chaos setting up my samba server and shares. This is not a complicated setup but I cannot get the permissions to work: Scenario: Samba 4 on Ubuntu 19.04 5 users in ...
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1answer
20 views

Ubuntu machine time issue

New to ubuntu. I see that my machine has wrong time set in the system. Can some one help how to correct the system time. timedatectl shows Local time: Tue 2019-07-16 03:53:00 IST Universal ...
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0answers
12 views

Why target id 0 cannot be created

I'm trying to set up iSCSI network, I can't create target with id 0. Host OS is Ubuntu 18.04.2 LTS .
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0answers
36 views

chmod equal sign isn't working appropriately or I misunderstand it? [on hold]

Does the equal sign in chmod command revokes unmentioned permissions? for example, the command chmod u=r file1.txt does it yield a permission -r-------- ? or it keeps the u and g permissions as they ...
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1answer
2k views

Why run a service as a system user?

I have a general question about the UNIX world. I am currently running Ubuntu at home and installed Transmission on a device and it runs as and saves files as the transmission-debian user. I am ...
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0answers
10 views

GPG Error on Private Repo

I am using a private repo on Ubuntu 14.04 and everything works as expected. While trying to build an Image based on Ubuntu 18.04.2 LTS I am getting this error: W: GPG error: s3://my-repo-path stable ...
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0answers
20 views

Can't log in to Ubuntu

I had a c++ program which creates .data files. I accidentally clicked its executable file directly instead of running it through an IDE. It kept on making files without opening any console. The system ...
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0answers
42 views

How to purge python 3 from Ubuntu 18.04? [on hold]

After purging out all pythong 3 related packages the network stopped working after reboot. Surprising is that python 3 has been a part of so called ubuntu-minimal image. The question is, how to ...
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0answers
21 views

Can't Find Installed Software in Ubuntu Search

I have installed some software from downloaded files (not from a repo) but I would like to be able to find them through the Ubuntu search engine in order to have them available in my task bar. For ...
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0answers
15 views

Set a (root) password when copy or delete any file even root user

Is there any way to request a password when remove or copy to another system, even root user? It does not matter to file or directory, but I don't want to change file permission to +700. If this is ...
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0answers
13 views

My systemd is hanging on “systemd start service_name”

I am trying to run a minecraft server like this [Unit] Description=Run Paperclip server After=network.target [Service] Type=forking ProtectHome=true ProtectSystem=full PrivateDevices=true PrivateTmp=...
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0answers
9 views

Setting up connectivity from physical interface to ovs-bridge inside a namespace

I am absolute newbie for the virtualization stuff. Im trying to set up a bridge inside a namespace which should be able to connect to a physical interface. conside I have a ovs bridge name br0 which ...
3
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2answers
129 views

Package, repository and installation process in Linux

I read many articles on the internet about how to install a program on Linux, for example Ubuntu, but I'm still confused! What I understand 'till now is: First, we should add repository that ...
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1answer
20 views

Shared library built on Ubuntu with -ljpeg doesn't work on Debian

I am making a shared library using C language. This lib has a dependencies from libjpeg and X api. I am building it on Ubuntu 18.04 OS and to build it I use the following command: gcc mycode.c -o ...
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0answers
16 views

Linux turns on after several trials

I have Ubuntu 18.04 installed on my Asus Zenbook. Since I have installed it I am having a hard time turning on the system. Sometimes when I turn on my computer I have purple screen coming up, and it ...
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0answers
29 views

Old hostname still seen after fresh install of a completely different distro

Something strange happened when I installed Fedora on an SSD that previously had ubuntu installed on it. Essentially, the hostname was configured to be ubuntupc, so when I opened the terminal, I'd ...
0
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1answer
19 views

Is there any X11 font available both support English and Chinese?

I need to display Chinese and English characters in the same line on an application. Is there any font for this?
2
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1answer
60 views

Why does Ubuntu render fonts better than Debian?

As Ubuntu obtains its packages from Debian repositories, I would like to know if Ubuntu developers do some modification to the original Debian packages to improve font rendering. I ask this because I ...
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3answers
21 views

Unable to switch between 2 OSs

I have 2 in my PC, a Samsung 970 EVO 500GB M.2 NVMe and a Samsung SATA SSD 860 EVO with 250 GB. Windows IS installed on my m.2 drive, and recently I installed Pop! _OS (an Ubuntu fork) on my SATA SSD. ...
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0answers
10 views

Hunk_FreeTempMemory: bad magic

I'm trying to run vkQuake3 but on startup, the game crashes with message Hunk_FreeTempMemory: bad magic I've already installed and updated my Vulkan drivers. What does this error mean? Here is ...
1
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1answer
32 views

Change keyboard layout (Dvorak, Qwerty, etc.) in Ubuntu 18.04.1 LTS

How does one change the keyboard layout from Qwerty to another layout such as Dvorak? I looked in: Settings > Region & Language Settings > Keyboard Help > Ubuntu Desktop Guide > Search But I ...
1
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1answer
48 views

Configuring TigerVNC systemd process on Ubuntu 18.04

I've been trying to get TigerVNC working on a clean install of desktop Ubuntu 18.04 (GNOME and all). Running vncserver :1 -localhost no allows me to connect perfectly fine, but my systemd service does ...
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0answers
71 views

Deleted files on ext4 fs reappear after 2 hours

Files deleted (or moved or overwritten) on ext4 drive (this is backup partition) reappear after about 2 hours. There is no way the data is anyhow stored somewhere else to be restored from, because of ...
1
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1answer
18 views

Pop OS alt + f4 not working for specific applications

I have recently installed Pop OS 18.04 but have a weird problem. I want to close some applications (File manager, Gedit, and Slack) using Alt+f4. However this doesn't seem to work.If I try to close ...
1
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1answer
81 views
+50

System service running python code exit with error code status 1

_note: the original posted question is edited and its faced has changed quite a bit! Summary: A python script using apshceduler fails to load as service with exit code staus1. Important to note that ...
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0answers
14 views

Listing UNREPLIED conntrack entries

Is there a way I can just display only UNREPLIED conntrack entries using conntrack-tools. I tried various options but no luck. conntrack -L --status [ASSURED|SEEN_REPLY|FIXED_TIMEOUT|EXPECTED|UNSET]
1
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0answers
14 views

auto ninja error

I am trying to build Chromium and was following the steps as shown in the website but while executing the cmds below: $ autoninja -C out/Default chrome $ autoninja -C out/Default chrome/test:...
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0answers
5 views

Window minimizing when ROS checking log directory for disk usage

I would like to have a window maximized 24/7 but it is minimizing every time when the ROS log directory is checked for disk usage. Getting message Checking log directory for disk usage. This may ...
1
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1answer
64 views

How to exit from TTY mode

I accidentally changed the video driver on my Kubuntu from NVIDIA to Xorg (if I'm not mistaken), rebooted my PC and now my GUI does not load after GRIB. Instead of GUI, I can see TTY mode. I logged ...
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0answers
21 views

How to create user who will not be using /etc/passwd for authentication?

I want to add a user to my Ubuntu who will be authenticated using SQLite or another database. I don't want to use /etc/passwd file. How can I achieve it?