Latest Ubuntu related questions

Score: 0
Felix Xu avatar
How to change Ubuntu network setting by editing/creating config file?
cz flag

In Ubuntu 20.04 desktop, there is a GUI network tool in All Settings -> Network.

If I set a static IP to some network adapter, there will be a config file generated in /etc/NetworkManager/system-connections

But the file is generated by GUI only if it's configured before. If I only have ssh access to a Ubuntu, how to set a static IP to another network adapter?

the config file is like:

[connection ...
Score: 0
tincherm31 avatar
On-screen keyboard shortcut key
gb flag

I was typing and accidentally fat fingered a key that triggered an On-screen keyboard to appear. I tried multiple key combinations and could not find a way to get it to come back. Screen keyboard was not turned on when this happened. I turned screen keyboard in settings and nothing appears. Does anybody know what keys I accidentally pressed to get this to appear on the screen?

Score: 0
psmc avatar
AIDE Crontab cause high memory usage and trigger OOM-killer
us flag

In order to follow the CIS benchmark rule, our ubuntu apply the CIS hardened changes with the following ansible-playbook https://github.com/alivx/CIS-Ubuntu-20.04-Ansible

After apply these security rules, we notice that “AIDE” daily check cronjob will cause high memory usage and trigger OOM-killer

/usr/bin/aide.wrapper --config /etc/aide/aide.conf --check

For instance, we run the FRR as our ne ...

Score: 0
chimeforest avatar
20.04 LTS Turn off adaptive brightness on desktop
ng flag

When I have a brighter window open, the screen gets REALLY bright.

When I have a darker window open, the screen gets REALLY dark.

It has nothing to do with environmental light sources, as this is a desktop computer without a webcam.

The quick and constant changes in brightness are murdering my eyes. What could be causing this and how do I turn it off?

  • OS: Ubuntu 20.04.2 LTS
  • GPU: Intel HD Graphics 550 ...
Score: 0
ezekiel avatar
How to bring up my mdadm RAID-5 array?
hk flag
  1. How can I bring up my mdadm RAID-5 array?
  2. How can I get these changes to persist?

I rebooted our server last night and found the raid array created about 8 months ago didn't come back up and I can't access my data. I've run a bunch of commands:

A couple months ago I added a new disk /dev/sdh to a RAID-5 array that was mounted to /srv/share following this. All seemed to work well, we had the extr ...

Score: 0
Ubuntu 18.04 unable to use apt / dpkg, numerous configuration issues
cn flag

Unable to install anything using apt / pkg. Whenever I try to install something, I get a list of errors around python3 and other packages not being configured. When I run dpkg --configure -a I get Processing was halted because there were too many errors along with a list of packages mostly python3 related but also many system-related packages (gnome-session, gdm3, udev). Removing / reinstalling erro ...

Score: 0
Mine Easter avatar
Why templates are not showing in home screen?
vn flag

I added a .txt file in template folder and it is showing in the nautilus but if i try right clicking in home screen then the "Add New Document" isn't available. I mean like is it supposed to not show in home screen or I have some problem?

Image

Score: 0
ali HOZA avatar
how define custom shortcut in ubuntu to change keyboard layout
ua flag

in windows, shortcut to change keyboard layout is Alt+Shift. in previous versions of Ubuntu it was available to select this shortcut for changing layout. but in recent Ubuntu versions it is not available. in Ubuntu 21.10 when i select Customize Shortcuts in settings it does not accept Alt+Shift as a shortcut. is there any conflict between my preferred shortcut and Ubuntu default shortcuts cause t ...

Score: 1
Connection to some websites fail on fresh installation
us flag

I have recently installed Ubuntu 20.04.3 LTS but now some websites are unreachable. I first noticed the problem during my Android Studio install when the Android SDK add-on list couldn't be reached but later I while researching noticed that while some websites like google.com would load, others like stackoverflow and askubuntu.com wouldn't.

The PC is connected via Ethernet into a Switch into a Wi ...

Score: 2
Unable to switch user since 21.10 upgrade
cn flag

Since upgrading to Ubuntu 21.10 I'm not able to switch users. I can log in as either user fine to begin with, but if I select switch user once logged in I get the user login screen as normal, then when I enter the username and password for the second user I get a black screen with a blinking cursor in the top left corner.

I've tried creating a new user and the same thing happens with that user. I ...

Score: 0
fififi fifi avatar
No sound on Teclast f15 plus
in flag

I am French and cannot find a solution, I use a translator... I bought a TECLAST F15 Plus teclast computer Laptop, 15.6 "Laptop, Intel Celeron N4120, 8GB RAM, 256GB SSD, Full HD IPS 1080P, 4K, Quad-Core, 64 Bits.

The PC is new and I installed in dual boot Ubuntu 20.04, everything works except the sound, I read a lot of posts but did not find a solution It should not be much because in pavucontrol ...

Score: 0
Pikaschu avatar
I was trying to remove password for the root user of mysql permanently. Got stuck with the below mentioned error
az flag

I typed below commands in cmd prompt.

sudo systemctl stop mysql.service
sudo systemctl status mysql.service

Error: Unable to type anything and stuck with lines 1-13/13(END) What to do next?

  1. If I want to create an user account for any services and give them complete permissions for a single database of those services only. Don't want to use root account. How can it be possible to do?
Score: 0
OpenVPN drops the connection to my machine from outside LAN
pf flag

I'm facing this specific issue that I can't reproduce on Windows and Mac, it happens only on Linux.

My network has the following setup. Fiber Router DHCPs 192.168.1.x to WiFi Router 192.168.0.x DHCP's to devices.

I have an OpenVPN server on my WiFi Router through which I'm connecting to my machines from outside LAN. The problem happens when one of my Linux machines establishes a connection to some o ...

Score: 3
k314159 avatar
Set default visible columns for Files
in flag

I've seen this question:

How to set visible columns default for the 'Files' file manager?

and would like to ask how to do it now in Ubuntu 21.10 (Files 40.2) because the Preferences dialog no longer has the tabs that previous versions had; i.e. now that the set of columns to use as default is no longer shown as a tab in Preferences, how can we set the default?

Score: 0
lubuntu hangs on startup
ke flag

After I had to force a shutdown, because lubuntu was not responding anymore it hangs while starting, here is what I found in the boot.log Thanks a lot !

[[0;32m  OK  [0m] Started [0;1;39mShow Plymouth Boot Screen[0m.
[[0;32m  OK  [0m] Started [0;1;39mFlush Journal to Persistent Storage[0m.
         Starting [0;1;39mCreate Volatile Files and Directories[0m...
[[0;32m  OK  [0m] Started [0;1;39mCreate  ...

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