Latest Ubuntu related questions

Score: 0
Opening Qt applications on remote server using xming
vn flag

I am using proprietary software (Maxwell 4, a rendering program) on a headless server that I do not have physical access to. I do have SSH access (and can use RDP).

When running the software it tries to open some GUIs, but it being a headless server this of course fails. I have tried two things: to forward the GUIs to my local (windows) machine and to run it in RDP, but neither work.

System Info: Ub ...

Score: 1
Eugene09 avatar
I can't capture my screen
za flag

I have installed obs-studio in ubuntu 21.04 version. I have faced following problems:

  1. Not screen capture, just black window
  2. Terrible voice after finishing the record
  3. Not able to uninstall after 2nd installing

I have used these codes:

  $ sudo apt-get remove obs-studio

  $ sudo apt-get remove --auto-remove obs-studio 

  $ sudo apt-get purge obs-studio 

  $ sudo apt-get purge --auto-remove obs-studio 
 ...
Score: 1
Emile_O_ avatar
Headless Ubuntu into VirtualBox virtual machine
br flag

I want to run just any regular image set up in VirtualBox. Is it possible to run a virtual image/desktop with VirtualBox before the Ubuntu desktop environment loads?

Score: 1
Can you guess which DE's theme does my windows use? And how to recover my Ubuntu to fully use the GNOME theme?
ke flag

I've recently uninstalled the Deepin Desktop Evironment (DDE) from my Ubuntu 20.04 LTS system, and now I'm using a strange theme that looks more like Arch/Kali Linux:

Screenshot

How can I restore the stock Ubuntu 20.04 theme?

Score: 1
Unable to correct problems, you have held broken packages while installing gcc
jp flag

i can't install this on my Ubuntu 20.04 LTS

:~$ sudo apt install gcc
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The f ...
Score: 0
cassiopeia3 avatar
XprintIdle for x2go sessions
kr flag

I am using xprintidle to get the idle time (no user input) of an x2go session of an ubuntu vm. And I am monitoring the idle time of any x2go session in the terminal by export DISPLAY=xx && xprintidle, which workes well if I do nothing on my laptop, i.e leaving the laptop.

However, the idle time will sometimes be reset to 0 when I minimize the session and x2go client but doing something el ...

Score: 0
Keerthi avatar
Laptop woke up from sleep. Now lost keyboard and mouse
us flag

I have Ubuntu 21.04 installed. The laptop was on battery power. It went to sleep. When I open the lid it wakes up but can't use keyboard (tried in-built/external keyboard) or mouse. Unable to force reboot.

I opened the base cover in an attempt to disconnect the battery but the connector (red arrow in pic) is so small and flimsy and do not want to risk breaking it. Its a brand new Dell 7610 laptop.

 ...
Score: 0
Nightshade X avatar
sudo apt update error: "E: Type 'sudo' is not known on line 1 in source list /etc/apt/sources.list.d/spotify.list"
us flag
$ sudo apt-get update                      
N: Ignoring file 'some-ppa.list.save.2' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'some-ppa.list.save.1' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
E: Type 'sudo' is not known on line 1 in source list /etc/apt/sources.list.d/spotify.list
E: The list of sources could not b ...
Score: 1
SRA Toolkit Error while using prefetch
cn flag

I installed the SRA toolkit using these commands:

cd ~/Downloads

wget http://old-releases.ubuntu.com/ubuntu/pool/universe/n/ncbi-vdb/libncbi-vdb2_2.9.3+dfsg-2_amd64.deb 
wget http://old-releases.ubuntu.com/ubuntu/pool/universe/n/ncbi-vdb/libncbi-wvdb2_2.9.3+dfsg-2_amd64.deb 
wget http://old-releases.ubuntu.com/ubuntu/pool/universe/s/sra-sdk/sra-toolkit_2.9.3+dfsg-1build2_amd64.deb

sudo apt-get in ...
Score: 1
Looking for diagnosing RDP access to my Ubuntu 20.04 LTS
kz flag

I have an ubuntu 20.04 LTS VM. It is a default installation and its networking seems properly up and running.

I am able to remote SSH to the machine, no problem.

I ran the following commands to enable RDP:

sudo apt install xrdp
sudo systemctl enable --now xrdp
sudo ufw allow from any to any port 3389 proto tcp 

In addition, I have screen sharing enabled like this:

enter image description here

Still I am not able to connect to  ...

Score: 0
18.04 LTS -> 20.04 LTS leaves mysql broken. Unsupported upgrade path
in flag

https://dev.mysql.com/doc/refman/8.0/en/upgrade-paths.html I had v18 LTS, just upgraded to v20 LTS, and the version jumps for MySQL are not supported. I'm now stuck with mysql shutting down, because INNODB tables can't be upgraded.

[ERROR] [MY-013168] [InnoDB] Cannot upgrade server earlier than 5.7 to 8.0

What are my options?

Score: 6
alex avatar
When compiling a project, Maven throws an error
in flag

OS Linux - Ubuntu 20.04.2 LTS When compiling a project, Maven throws an error

[ERROR] Error executing Maven.
[ERROR] java.lang.IllegalStateException: Unable to load cache item
[ERROR] Caused by: Unable to load cache item
[ERROR] Caused by: Could not initialize class com.google.inject.internal.cglib.core.$MethodWrapper

java -version

openjdk version "17" 2021-09-14 LTS
OpenJDK Runtime Environment ( ...
Score: 0
Tejas Malpani avatar
How to solve ACPI error Emergency mode loop?
cv flag

When I boot my computer I am presented with the following errors:

Error List

How can I fix this issue?

Score: 0
No Such File or directory using I/O redirection
mx flag

I am using I/O redirection in Linux to take input from a file named input.txt and output the results to outpu.txt for a compiled c++ program. The command goes like this:

/home/gajeet/Documents/OpenSource/Test < input.txt > output.txt

but this gives me a warning and an error:

warning: An error occurred while redirecting file 'input.txt'

open: No such file or directory

Note: input.txt and output ...

Score: 0
Xubuntu 20.04: cursor spins indefinitely after startup
in flag

After upgrading to Xubuntu 20.04, once I log in the cursor shows the busy (spinning) cursor indefinitely.

Is there any way to figure out why it's showing the spinning cursor, like what application it's waiting on?

The Stunning Power of Questions

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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