Score: 1
JPTh avatar
How to use the OBS-ndi plugin (4.9.1) with OBS (25.0.3) ; Ubuntu studio (20.04.2)
cn flag

OBS (Open Broadcasting Sofware) seems to work well as natively installed in Ubuntu Studio. I like !

I now try to use the OBS-ndi plugin, in order to team up two computers for streaming. For that to work, the said plugin has to be present in both Ubuntus, both computers.

One of these computer used to be a MAC desktop and now using Ubuntu studio, version 20.04.2. ; graphic interface Xfce 4.14

The other  ...

Score: 1
dickfitzwell avatar
ubiquity installer fails to install grub to correct path
us flag

am I missing something or why can't grub always be installed where it is directed to with manual partitioning + preseed?

I use a preseed file for xubuntu 20.04.2 desktop that is devoid of partitioning directives. when "automatic-ubiquity" is booted, after manually partitioning sda selecting /dev/sda1 is ignored and grub is installed into /dev/sda.

added d-i grub-installer/only_debian boolean false

Score: 0
The laptop deadlocked after logging out from startx
in flag

I tried to first run Enlightenment Window Manager on tty2 after using the Ctrl+Alt+F2 keystrokes. It ran normally but, afterwards, I opened a terminal in Enlightenment and typed startx. X11 also launched successfully. Then I logged out from startx. After showing that it logged out successfully, the notebook died.

I unplugged the machine anyway and tried to login again but was dead cycled at login  ...

Score: 1
Daniel avatar
How do you set a keyboard shortcut to add specified text?
bd flag

i would like to set a shortcut so that when i type super + p, a set of numbers i use frequently are written wherever i'm writing, could someone help me with that?

(for example i'm using the search bar or the terminal, i type super+p and the numbers "1234" are written as if i just typed them)

Score: 1
Peter Addison avatar
Mounting shares from Synology NAS persistent on boot up
us flag

Mounting shares from Synology NAS persistent on boot up

I'm using Ubuntu 20.4 with a Synology NAS that is accessible easily from Windows and Mac

I can mount the shares using the following command in terminal:

sudo mount -o uid=linuxusername,username=shareuser,pass=sharepass // /home/profile/Music/musicone

However, that's labourious since I have several sharepoints to mount, therefore ...

Score: 1
housemd avatar
Ansible print debug message result variable
hk flag

I have a simple task that I cannot overcome.

I have a playbook that returns AWS EC2 instance configuration. I need to only print (display) private_ip_address.

Here my playbook

- hosts: local
  connection: local
  gather_facts: false
  become: yes
  become_method: enable


  - name: gather-info-ec2
        - i-XXXXXAAAAAA

    re ...
Score: 1
Mina Michael avatar
Benchmarking a GPU on a headless node (one without a display or monitor)
in flag

How can I benchmark a GPU on a machine that has no display connected to it?

I am provisioning VMs with different types of GPUs. I want to benchmark the GPUs in order to compare them. But they're (remote) VMs. There's no display.

I tried for example running glxgears in tty, but it says there's no display.

Note that these are the currently available GPUs that I can provision. They're Nvidia.

Score: 0
Praveen avatar
Expecting a password in the middle of script in RHEL
cn flag

I want to copy files from another server it's expecting a password to copy... Where as sshpass is working in Ubuntu, but in RHEL is there a way to pass the password in the script.

Score: 1
NewGuy avatar
VirtualBox giving Secure Boot error - Despite the fact it's not installed?
pk flag

My /var/log/syslog file kept getting tremendously big, I checked the last few lines with tail and I found this

Jun 16 19:21:18 Freedom-MAX-G0101[7974]: The Secure Boot key you've entered is not valid. The password used must be
Jun 16 19:21:18 Freedom-MAX-G0101[7974]: between 8 and 16 characters.
Jun 16 19:21:18 Freedom-MAX-G0101[7974]: Enter a password for Secure Bo ...
Score: 0
ubuntu upgrade went wrong: SSH connection closes after login - no access to terminal
vn flag

After an upgrade from Ubuntu 14.04 to 16.04 on my VPS done through SSH, SSH broke. do-release-upgrade always ended up with some package error, so I left it as it was. Client was left open, after ~12 hours later when I closed the connection, and wanted to reopen it, I realized that its broken: after a successful login the server terminates the connection with message Exit status 254

I did a ssh -vvv USERN ...

Score: 0
thatoneguy avatar
my raid configuration is not initializing after system reboot
in flag

My system is not retaining my raid config after reboot. I have checked the fstab and mdadm.conf and everything looks right.

Score: 0
jamieburchell avatar
Why does setfacl turn on the group execute permission on files even when specifying X?
cn flag

I'm seeing strange behaviour with setfacl setting the eXecute bit on the group permission for files in some situations, confirmed on CentOS 7.

As user root with unmask 0002:

mkdir foo
touch foo/bar
setfacl -Rdm u:jburchell:rwX foo
setfacl -Rm u:jburchell:rwX foo
touch foo/baz
ls -l foo

-rw-rw-r--+ bar
-rw-rw-r--+ baz

Now, this is where I'm seeing odd behaviour:

setfacl -Rdm u:user2:rwX foo
setfa ...
Score: 0
user284869 avatar
Banshee can't find my music after changing HD mount options
gf flag

So, after spending a few days setting up my music library just the way I wanted it... I made the dumb decision to play around with the auto-mount settings in the disks utility which has broken all the functionality of the music library I built.

Previously, the HD containing all of my music files was in /media/Cactus/Etc/Music and because of the new auto-mount instructions, the folder is now in /mn ...

Score: 1
Why do floating copies of highlighted text appear (and sometimes get stuck)?
ng flag

Linux novice here. Enjoying learning to use the terminal to get things done. However, as the question says, in almost every application on Ubuntu, I seem unable to select text without a floating version of it appearing and following my mouse around the screen.

Sometimes the floating version won't disappear even after unselecting the text. The only thing that appears to remove it are lots of rand ...

Score: 0
DJR avatar
openstack selfservice network setup
in flag

I'm trying to configure the selfservice network on Openstack Wallaby, running on Ubuntu Server 20.04. I have followed the instructions for everything under the "Minimal deployment for Wallaby" section under "Install OpenStack services" on the site, and all services are running. I followed "Networking Option 2" when setting up Neutron.

For the physical network, I have a dedica ...

Score: 0
Keyboard on my laptop stopped working
in flag

Built-in keyboard doesn't work but external USB keyboard working fine.
Built-in keyboard doesn't work in BIOS as well.
Built-in keyboard does work booting from live USB.
How do I find the reason?

Edit. When booting from USB drive I still have to use external keyboard to choose boot option (standard/safe video mode etc.). But when live OS started I can disconnect external and use built-in.
That is what st ...

Score: 0
gregrwm avatar
How may i get less to do case insensitive filename completion?
ng flag

How may i make filename completion in less case insensitive?

My INPUTRC environment variable specified file contains set completion-ignore-case on and this works as desired in bash, but not in less. For example in bash lower case r<tab> will complete README, but in less i still have to type R<tab>.

(lubuntu 20.04)

Score: 0
headamage avatar
gnocchi-api service
gh flag

When I install gnocchi-api on Ubuntu 20.04, the service is not created. Instead apt reports "Will not register gnocchi endpoint this time (no user request for it)" but I cannot find any way to request the endpoint.

The problem is that openstack guide requests this service to be restart and of course ubuntu says that the service does not exist.

I had the same problem years ago and never managed to ge ...

Score: 0
7Leven avatar
Dual boot issues - same disk Windows and Ubuntu
ru flag

I've been researching for hours on how to fix my problem, and have just decided it is probably best for me to just restart the process using what's recommended to me. I'm well aware that there are other posts that address parts of these issues, although I cannot find one that answers all my questions, particularly my issue of installing Ubuntu and Windows dual-boot on the same disk rather than separate on ...

Score: 1
RogerTheShrubber avatar
Some emails show blank on Squirrelmail
mx flag

For some reason certain messages, only for some users, are showing up either partially or totally blank and are not selectable. The mail server is not self hosted (, only Squirrelmail (v 1.4.22).

I've confirmed the messages themselves seem just fine and are perfectly fine when downloaded via another IMAP client. I'm guessing it's something specific about these messages, but I can't figure o ...

Score: 1
Patoshi パトシ avatar
Replace AuthUserFile with the password itself or reference a relative path to the folder
br flag

I have a PHP script that generates 100s of directories and in these directories contain CSV files. I'm able to protect these CSV files using AuthUserFile if it points to an absolute .htpasswd file, but I want to point to a custom generated .htpasswd in each of these directories.

  • Is there a way to replace: AuthUserFile with the password itself? I have it pregenerated in my PHP script already.
  • OR how can I ...
Score: 1
Requirements to achieve Jumbo Frame (mtu = 9000) with PXE Enabled networks
vn flag

What I should be looking for when trying to enable Jumbo Frames in networks that relies on PXE for server booting?

As far as I know I must have:

  • Network switch capable of MTU >= 9000
  • The ability to enable Jumbo Frames not only on the network interface on the switch but also on the Port Channels and VLANs
  • A compatible SO to deal with the higher MTU after the boot process with network bonding a ...
Score: 0
Marko Kitonjics avatar
Why can't I add t4g instances to my EKS cluster?
in flag

I have an EKS cluster with a nodegroup consisting of a couple of t3.small EC2 instances.

I want to switch to t4g.micro instances (double the amount of instances) because it will be cheaper. My approach was that I'll add a new nodegroup, consisting of t4g.micro instances and once they're up I'll just delete the t3.small nodegroup, but for some reason when I'm creating the new node group it doesn't ...

Score: 0
Razeth avatar
New SSSD Active Directory install does not allow logins
np flag

Just instaled SSSD using this guide to get active directory authentication working on Ubuntu 18.04.5 LTS.

It worked for our first server, but for whatever reason the one i'm trying to install on next will not allow domain users to login.

I'm new to this feature, so apologies if I'm not familiar with the logs that need to be provided. Please let me know what files I can provide if this is not helpful ...

Score: 0
phydeauxman avatar
Installing SSH Server on RHEL 8.4
uz flag

We have a Ubuntu Docker container that runs a SSH server that we are trying to port over to Red Hat 8.4. I am trying to install the openssh-server package using the dnf package manager via my Dockerfile. The package fails to install with the error Unable to find a match: openssh-server. Am I trying to install the wrong package? All of the documentation I have been able to find says that is the name of th ...

Score: 0
client ip behind nginx reverse proxy
in flag

I'm running an nginx reverse proxy to be able to run multiple servers behind my firewall. I noticed on my (Kerio) mail server the error log is filled with "failed login from < local ip of nginx >" and I was wondering how can I set it so I get the remote IP of the person/bot that is trying to login so I might use that information for auto blocking those addresses (for example)?

This is my cu ...

Score: 0
cloudragon avatar
run dvd on vlc version 18.04
de flag

Playback failure: DVDRead could not open the disc "/dev/sr0". Your input can't be opened: VLC is unable to open the MRL 'dvd:///dev/sr0'. Check the log for details.

Score: 0
Luke Wood avatar
Ubuntu Server - Internet connectivity issue, empty /etc/network/interfaces
fr flag

I manage a server which hosts a few applications. It's running on a VM and I access via SSH.

OS: Ubuntu Server 20.04.1 LTS

Everything was working fine until today, my scripts can't access WAN. (Can still SSH in)

I can ping out:

$ ping
PING ( 56(84) bytes of data.
64 bytes from ( icmp_seq=1 ttl=118 time=5.26 ms
64 bytes  ...
Score: 0
screen resolution wrong -> black screen ubuntu 21.04
cn flag

I've installed Ubuntu 21.04 on my laptop IdeaPad gaming. The default resolution was 1920x1080, but after I changed it to different my screen become black. When I try to run xrandr it gives me an error - no display found. What shell I do? How can I fix this?

Score: 0
Aeternal avatar
Linux Networking - How to dynamically filter network packets within short time range
cl flag

I am trying to find a solution to dynamically filter network packets with strict timing constraints and based on a IP list on a Linux Operating System

I cannot install additional software of modify kernel or libraries to add modules to iptables for example

I have an equipment that receive too much network packet and I need to find a way to filter network packets dynamically with a 200ms cycle.

For exam ...

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