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.
13,008
questions
0
votes
0
answers
10
views
My Lenovo Ideapad gaming 3 refresh rate can not be set to 60hz from 120z
I recently installed ubuntu in my Lenovo Ideapad Gaming 3 and I wanted to set the refresh rate to 60hz so that I can save more battery. The refresh rate changing option was not there for my device in ...
- 1
0
votes
0
answers
33
views
Very poor NVMe software raid1 write performance on Ubuntu 22.04
I'm experiencing very slow writes with raid1 ext4 (2x Samsung SSD 980 1TB).
The average write speed is something around 80MB/s.
I detached one NVMe from raid1, reformated it as a single ext4 partition,...
- 1
0
votes
0
answers
13
views
"The program 'cefclient' received an X Window System error" when selecting "Show DevTools" and crashes
I built CEF in Ubuntu 22.04 Desktop following the steps here: https://bitbucket.org/chromiumembedded/cef/wiki/MasterBuildQuickStart.md
And the building process looked fine, as you can see from the ...
- 101
0
votes
1
answer
22
views
How do I increase /proc/sys/fs/mqueue/msgsize_max to more than 8192?
Is it possible to change the default value to be larger? when i try to use it in a C program it fails on values larger than 8192.
printf("create queue size: %lu\n", attr->mq_msgsize);
...
0
votes
0
answers
6
views
Unable to run Julia "BinaryBuilder" as part of a CI process in Ubuntu 22.04 environment
We have a GitLab CI runner set up on an on-prem computer. The runner is using the "shell" executor," so the jobs are running directly in the host environment.
We have an analysis tool ...
- 101
1
vote
1
answer
24
views
Problems adding rules.d rule for unit with multiple tty devices
I want to add a rule under /etc/udev/rules.d for a Texas Instruments CC1352P-2 development board. On my Ubuntu server it creates two ttyACM devices:
crw-rw-rw- 1 root dialout 166, 1 Sep 28 10:37 /dev/...
- 113
0
votes
1
answer
41
views
Realteck ALC274 with a microphone array not working in Mint 21.2, with Intel HDA
I got a new windows based laptop and decided to install Mint (Mint 21.2 Cinnamon) on it. This laptop comes with a microphone array around its camera.
I got most of the hardware to work including built-...
- 101
0
votes
1
answer
61
views
freeipa client installation in ubuntu
I am installing freeipa client in ubuntu VM, but getting the following error.
failed to obtain host tgt: major (458752): no credentials were supplied, or the credentials were unavailable or ...
0
votes
0
answers
23
views
Can't add secondary gateway for secondary interface in Ubuntu 22.04
I have two interfaces and both of them have a public IP address. One of them (eth0) is primary and the other one (eth1) is secondary. I'm trying to setup it through netplan + iproute2. When I was on ...
- 101
0
votes
2
answers
46
views
Anyone know what these all these user sessions (see post) might be?
Any time I login to my laptop, including after freshly booting my laptop there are four user sessions already. Only the "who" command can see all four, the "w" command can only ...
- 3
0
votes
1
answer
32
views
Reject SMTP login connections except ips on a white list
How to reject SMTP login connections on postfix from any IP except those on whitelist, (not rejecting the mail reception).
Tried adding to main.cf under
smtpd_recipient_restrictions =
...
...
- 1
0
votes
0
answers
62
views
Account unlock is not happening even after unlock_time
I want to lock user account after 3 failed attempts, I am following this guide. I am using Ubuntu 14.04 (for jumphost purposes only). However, the automatic unlock is not happening after 10 minutes. ...
- 11
0
votes
1
answer
35
views
Ubuntu Immediate client_loop: send disconnect: Broken pipe
I could ssh into other machines fine, but a broken pipe msg shows up immediately when trying into ssh into machine A, including ssh into itself.
ssh machine_A@localhost
client_loop: send disconnect: ...
- 161
0
votes
0
answers
35
views
My Ubuntu kernel config file does not recognizes all memory available to the system,but only half
The project that I've been working on since 2 years is to enable KVM (with the support of libvirt and virt-manager) on a recent version of Linux and of its kernel on the old but still nice ARM ...
- 495
0
votes
1
answer
21
views
Mirror download fails with error: Failed getting release file while running debootstrap with sudo
I run the command
$ sudo debootstrap --variant=buildd --arch i386 lucid /var/chroot/ https://mirror.internet.asn.au/pub/ubuntu/archive/
and the error is:
I: Retrieving InRelease
I: Retrieving ...
0
votes
2
answers
63
views
How do I get rid of this leading space highlighting in Nano (Ubuntu)?
Here's an image:
Every time I type something with a leading tab, I get this obnoxious green/teal background until I type a value in for that line.
Also, for some reason on line 27, the color I ...
- 63
0
votes
0
answers
12
views
Why is a resolution missing from Xorg session, but not in Wayland?
I run Ubuntu 22.10 on Dell XPS 13 2-in-1 2020. Its graphic card is Mesa Intel® Xe (TGL GT2). I noticed the following:
When I log in to the Ubuntu desktop environment (which is default), I can choose ...
- 101
0
votes
0
answers
19
views
key type ecdsa-sha2-nistp521 not in PubkeyAcceptedAlgorithms [preauth]
I have trouble setting passwordless authentication on a host:
Sep 21 09:57:36 pvestorage2 sshd[1688625]: userauth_pubkey: key type ecdsa-sha2-nistp521 not in PubkeyAcceptedAlgorithms [preauth]
OS: ...
0
votes
0
answers
34
views
How was my postgres docker container hacked / infected
My VPS have been infected by the kdevtmpfsi malware, twice. That's the problem, because I've taken every possible precaution after being infected for the first time, and I have no idea how I'm being ...
- 1,232
1
vote
1
answer
19
views
With what shared objects are the debug symbols in a debug deb package assocciated with?
I am trying to find debug symbols that are associated with various shared objects shipped under the Ubuntu 22.04 distro.
For example, let's consider the amd64 deb package: libssl3 (version 3.0.2-...
- 121
1
vote
0
answers
29
views
Shutdown after X failed login attempts
I have a laptop with Xubuntu 22.10, whose SSD is encrypted with LUKS, so if it's stolen when shut down, my data should be safe. But it's more likely to be stolen while it's switched on, and then only ...
- 11
0
votes
0
answers
19
views
Stuck in GRUB on Mac mini booted with ubuntu ONLY. corrupt partitions
To start, I am NOT familiar at all with Linux. I needed it for school, and it was having issues booting onto an older intel Mac mini (2018). The Mac was 100% excellent and running Ventura perfectly. ...
- 1
1
vote
0
answers
36
views
How to log into a Linux virtual machine when its root user is expired and reason being failed to change password
I created a Ubuntu 18.04.6 LTS VM on vSphere. Created a user, test. VM is a 1-year-old machine. Now when I am trying to log in ( through PuTTY), I can't. I checked the logs it says that the "...
0
votes
1
answer
15
views
IPTables - allow connection from only one random IP simultaneously
Please tell me how to limit the connection to the server's listening port to only one random IP address, if a TCP-Syn comes from any other second one, then it is reset, if there are no connections to ...
- 11
0
votes
1
answer
19
views
Installing Ant is overriding Java Installation
I am trying to install ANT after installing java. My java in Sun Java.
pc19@pc19-H110:~$ java -version
java version "20.0.2" 2023-07-18
Java(TM) SE Runtime Environment (build 20.0.2+9-78)
...
- 705
-1
votes
1
answer
37
views
How do I use multiple interfaces, with some of them on the same subnets in kea?
I'm currently building a homebrew router, with some changes from my previous builds for more flexibility. I'm running an ubuntu server minimal base, network interfaces managed by netplan ,firewalld ...
- 457
-2
votes
1
answer
35
views
Firefox has no installation candidate
Using ubuntu 22.04 cant use Firefox. Package missing, has been obsolete or is only available from another source.
-1
votes
0
answers
46
views
How To Decrypt Encrypted System Partition?
I recently switched to Ubuntu from Windows, and while installing Ubuntu, there was an option to encrypt the system files partition. It felt like a good idea... but it WASN'T. Every time I start my ...
0
votes
1
answer
123
views
Unable to upgrade from Ubuntu 22.10 - packages have been kept back: libgd-dev libgd3 libgd3:i386
I'm a layman when it comes to using Linux/Ubuntu. I'm on Ubuntu 22.10 unable to uprade. I tried all that I could find on internet:
apt update
apt upgrade
apt full-upgrade
Here is the log:
hp@hp-...
- 103
1
vote
0
answers
25
views
GPG key could not be added by apt-key on Ubuntu 20.04
I can not add the gpg key for apt repository into keychain. But I can add it through the gpg --import
When I try to add it with apt-key add, it just doesn't appear there, and I get no obvious error:
...
0
votes
0
answers
13
views
Dependency wierdness - Can't install printer driver
I'm trying to install the driver for my Canon-MX390 printer but when I run the file from Canon it complains about dependencies I already have;
Ubuntu 20.0.4LTS
$ sudo ./install.sh
Canon Inkjet ...
- 101
1
vote
0
answers
25
views
Performance problems when running Wireguard between virtual machines
I’m running into performance problems with Wireguard tunnels running between two virtual machines on the same hypervisor (running under Qemu/KVM) and I would greatly appreciate any insights/advice ...
- 53
0
votes
0
answers
27
views
VFS: cannot open root device "nvme1n1p4" or unknown-block & Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
I was in the process of upgrading my Ubuntu 20.04 to 22.04. Unfortunately, I made an error during the upgrade process. I decided to restart the computer hoping it would fix the problem. Now I'm unable ...
- 111
0
votes
2
answers
66
views
Reorder of launching Systemd services
OS: Debian 11 Bullseye
Context:
The Zerotier application adds the zerotier-one.service system service and creates a virtual network interface (when it works).
The sshd server default listens to all ...
- 37
0
votes
0
answers
11
views
Wifi works only after abrupt shutdown
Its a weird thing but wifi on my Ubuntu only recognised wifi of my home router after I abruptly shutdown using my power button. Before that, It only shows 2 wifi names, not of my home wifi or wifi ...
- 1
0
votes
2
answers
78
views
How can I fix a .tar.gz being downloaded as html?
I'm trying to download this file https://www.apache.org/dyn/closer.cgi/hadoop/common/hadoop-3.3.6/hadoop-3.3.6.tar.gz with wget. When I try to unpack it with tar I get the following error:
gzip: stdin:...
- 17
0
votes
0
answers
15
views
pulseaudio not connected bluetooth device after pulseaudio restart but showing it if bluetooth connects after pulseaudio is running
I have a ubuntu 22.04 computer that works with USB soundcard.
I configure some pulseaudio properties of the sinks/sources in default.pa.
Now, I want to change to work with a bluetooth device.
The ...
-1
votes
2
answers
211
views
Ubuntu only allows FAT32 and not NTFS
I currently find myself in a desperate situation. I'm trying to boot from the pendrive on my computer installed with Ubuntu 22.10, it is not recognizing my pendrive formatted with the NTFS file system,...
- 49
0
votes
1
answer
83
views
It says always I'm not in "sudoers" file!
I migrated from Ubuntu-20 to Debian-12, and I can't excute the command sudo with my username my_name within a fresh installed system.
So, I added my_name into "sudo" group(usermod -aG sudo ...
- 141
-1
votes
3
answers
43
views
Why ubuntu 18 not booting inder vmware?
Image imported from AZURE and converted to VMWARE. Booting stop after few seconds. Can't understanding why...
Very long loading "random:" and no loading more.
0
votes
1
answer
23
views
Ubuntu 23.04 MySQL set root password from non-interactive .sh script in docker
I have a docker ubuntu image used for automated testing that needs several things installed, one of those being a mysql server. I install it using apt.
I can't use the server because I don't have the ...
1
vote
1
answer
42
views
Linux user is added to a group - Group permission for a dir is rwx - Still user is not able to create a dir in that permitted dir, [duplicate]
user@user-ubuntu:/usr/workspace$ whoami
user
user@user-ubuntu:/usr/workspace$ sudo ls -ltrah .
total 8.0K
drwxr-xr-x 15 root root 4.0K Sep 2 20:10 ..
drwxrwx--- 2 root fooo 4.0K Sep 9 13:28 .
user@...
- 111
0
votes
0
answers
22
views
Ubuntu 14 VM Stuck after boot with blinking underscore
Ubuntu 14.04 - Stuck after boot. Screen shows blinking underscore. Even recovery leads to the same screen. Here is the screenshot. Even I cannot access the terminals.
What should I do to safely login?...
- 131
0
votes
1
answer
63
views
Linux Ubuntu Kernel crash: python: Corrupted page table
My system configuration:
Processor: 12th gen Core i7 12700K x 20
16 GB RAM
Not installed external GPU (No Graphics Card). All the GPU is from the processor itself (on chip)
Motherboard: Gigabyte ...
- 101
0
votes
0
answers
52
views
EFI Win10 / Linux dual boot setup - cannot select GRUB as the first boot OS
I am trying to dual-boot Win10 and Linux Mint 21. Both have been installed, but my computer boots straight into Windows without ever giving a prompt. If I press F12 during boot, there is only the ...
- 101
-1
votes
1
answer
29
views
How is my _gateway ARP entry address resetting itself to a "hardcoded" value?
I've got an ubuntu linux PC on a private 192.168.x.y LAN. It's got an IP on the 0 subnet (192.168.0.y) and is able to ping other PC's on the 0 subnet. It looked like the _gateway MAC address had been ...
- 99
0
votes
0
answers
27
views
Looking for the Nvida devices in my WSL2 Ubuntu implementation for SLURM GRES
I am trying something odd. I have a slurm cluster configured that has 4 compute nodes. 2 of which are Windows 11 machines running WSL2 and I have it working.
right now, I am trying to add GPU support ...
-1
votes
0
answers
34
views
How to install Clear Linux in a Surface Go from Xubuntu
I'm running Xubuntu in my Surface Go 3 and now I want to move to Clear Linux. But I'm quite a noob and I'm facing some obstacles.
The facts are these:
-Initially, from Windows 11, I created a bootable ...
- 1
1
vote
0
answers
28
views
Route traffic to different IP addresses while using a single outgoing IP
So I have 3 servers, each with his own public IP address. Now I also have a virtual IP(178.x.x.x) that's publicly accessible and it's mounted to one of those servers.
The virtual IP can be moved ...
- 11
0
votes
0
answers
30
views
ld.so issue after upgrading Ubuntu to release 22.04
I have upgraded Ubuntu from 18.04 to 22.04, but I'm getting the following error:
ERROR: ld.so: object '/usr/lib/x86_64-linux-gnu/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open ...
