Latest Ubuntu related questions

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Vishal Parmar avatar
program/flash tool for PSoc controllers in Ubuntu
in flag

Does Linux have any cypress PSoc creator IDE alternative package or IDE to flash code on PSoc5 series controllers

Score: 0
s.k avatar
Unable to limit CPU speed on Ubuntu 22.04 with cpufrequtils
cn flag
s.k

Based on this: How can I easily control CPU speed on Ubuntu? I try to manually force some of my CPU cores on Ubuntu 22.04.1 5.15.0-56-generic x86_64 GNU/Linux to be limited to 800 MHz using cpufreq (from: cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009) but it doesn't seem to work:

$ for i in 1 2 3 4 5 6 7; do sudo cpufreq-set -c $i -d 800 MHz; done

$ watch -n2 'cpufreq-info | grep  ...
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nightraven avatar
How do i disable system sound in Kubuntu 22.04.1?
pk flag

When i empty the trash in Kubuntu it comes a system sound, how can i disable that? In the sound settings i didnt find how to disable that.

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Thiyagarajan V avatar
/dev/nvmeon1p2: clean, 226877/15237120 files, 4073338/60918272 blocks
sc flag

enter image description here

Problem : /dev/nvmeon1p2: clean, 226877/15237120 files, 4073338/60918272 blocks

Note : this problem on "kubuntu 22.04.1 lts"

Laptop model : hp 255 g8

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Fred Nerk avatar
Canon TS6300 auto on
br flag

I want my printer, Canon TS6300 on WiFi, to switch on when data is sent to it. Windows has the ij printer utility which allows what they call "auto on" but not so with Linux.

Can this be done at the printer or is there a program to do it that I haven't found?

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Yogesh kumar G N avatar
ubuntu_22 : ROS2_humble :/usr/include/pcl_conversions/pcl_conversions.h:fatal error: pcl/conversions.h: No such file or directory
cn flag

Recently I started working in ROS2, while using some of pcl function I face below error.

For #include <pcl_conversions/pcl_conversions.h> I am getting the fatal error

/usr/include/pcl_conversions/pcl_conversions.h:44:10: fatal error: pcl/conversions.h: No such file or directory
   44 | #include <pcl/conversions.h>

Platform : Ubuntu 22

ros-humble-pcl-conversions 2.4.0-4jammy.2022 ...

Score: 1
tyroc avatar
How to mount a USB disk after partitioning with the fdisk command, as if the USB disk was just inserted and automatically mounted?
cn flag

I have a USB drive disk, whose label is 'DATA'. When I plug in the USB disk, Ubuntu will automatically mount it to /media/cjl/DATA.

I partition it with fdisk command, and I don't want to mount it with 'mount' command. So I unplug the USB drive and plug it in again. Then Ubuntu will automatically mount it to /media/cjl/DATA.

Is there anyway to mount it after fdisk which needn't unplug it?

In other words, h ...

Score: 1
Andrew Arnott avatar
Ubuntu 22.10 GNOME never starts: boot screen ends with "[ OK ] Started GNOME Display Manager."
cn flag

GNOME was starting fine on this relatively new PC.

  • Lenovo ThinkCenter M910Q tiny desktop computer
  • Intel Core i7-6700T Up to 3.6GHz
  • 32GB RAM
  • 1TB NVMe SSD

Rebooting was fine too, although it hadn't had to do so for a few days. Today, I installed a few apps from the Ubuntu Software app, including GIMP and a couple other paint programs. I also let it install updates (only a few were offered today). When I r ...

Score: 1
King'ori avatar
Copying Ubuntu installation
al flag

I have been running Ubuntu 22.10 on a 500gb hdd. I recently purchased a 256gb ssd. Is there a way I can copy the previous Linux installation together with my files and documents so I don't have to start all iver again?

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PANNAG KUMAAR  avatar
What is the size of /home and /root partition that i should allocate on my ubuntu machine
gs flag

I have 280 Gb of storage on my laptop and i am installing ubuntu on my laptop and i plan on utilising the full space and i wanted to know that the partitioning should be like with the exact space that should be alloted? please help me figure out what the partitioning should look like .

i was planning on going with 60 Gb for /root and 10 Gb for swap and the rest for home and i'm kind-of confused r ...

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Harlee Votra avatar
Upgrade to firefox snap
cl flag

During the update it continues to pop up a little thing saying "'Frontend' is not responding" as well as saying I can wait for it or force stop, I have been waiting on this to update for over an hour and I continue to hit the wait option yet it still is not updating. What do I do to get it to update

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Vikram Ayaluri avatar
When executing a compiled C/C++ file using seccomp and execve in the below code, it is exiting with status 159 and signal 31
mx flag

I'm trying to execute C/C++ code in a secure environment using Seccomp and Ececve. But, C/C++ code is not being executed while trying with this setup. Please look at the files.

seccomp_rules.c

#include <stdio.h>
#include <seccomp.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdbool.h>

#include "seccomp_rules.h"


int c_cpp_seccom ...
Score: 3
How to place a small image as a watermark on the desktop in KDE?
us flag

In Cinnamon, it is possible to add an image as a watermark, with this extension.

enter image description here

This is a screenshot of my computer (Linux Mint 19) from April 2019. The cat is added as a watermark.

When an image is placed as a watermark, it remains there even when the wallpaper is changed. Also, the size and the transparency of the image can be modified.

Is something similar available on KDE Plasma? I am using K ...

Score: 0
BlackCorps avatar
Postscript (.ps) support failed in Ubuntu 20.04.5
cn flag

Usually, I could open postscript .ps file using evince and convert them to pdf using ps2pdf. But suddenly after updating the Ubuntu it stopped working and both evince and ps2pdf shows this:

Segmentation fault (core dumped)

I have tried installed evince, gs, gv and even libgs9 to no avail.

Because one of my data-processing software only outputs ps files and it inconvenience me to not be able open ...

Score: 0
dln949 avatar
Unable to change the primary display in Ubuntu 22.04 (using Wayland)
ng flag

Ubuntu 22.04 (wayland).

This is a fresh installation of Ubuntu. In Settings >> Displays, I have the display landscape as shown in the attached screenshot here:

enter image description here

As you can see, I have display #1 (third from the left) set as the primary display, and that is the display on which the top bar/panel should appear. However, Ubuntu simply will not obey this setting. It treats display #4 (leftmost ...

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DiogenesOfMiami avatar
Can't write to brand new drive?
lt flag

I've decided to make the plunge into Kubuntu in lieu of "upgrading" to Windows 10/11 with very little experience with Linux, and I've run into trouble quite early.

In short, I want to use this as my main PC from which I stream Steam games, among other things.

Everything was going swimmingly with my install until it came time to make a new Steam Library folder on my secondary NVMe drive. I tried crea ...

Score: 4
Uresh Kuruhuri avatar
Ubuntu 22.04 + nvidia drivers not working
in flag

I have a Lenovo Z70-80 and upgraded the Ubuntu from v20.04 to v22.04.

While upgrading, it showed downloading the latest nvidia-drivers-525 but it could not install. To note, I have

product: GM108M [GeForce 840M] vendor: NVIDIA Corporation

Whenever I try to install the drivers using the following command:

sudo apt install nvidia-driver-525 nvidia-dkms-525

it is throwing the following error:

user@Len ...
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gpTQA3eM avatar
"Unable to install GRUB in /dev/sda"
mf flag

I am a beginner and not an expert on tech. I tried to get Ubuntu on USB key using this video I found: https://youtu.be/g1tZ7X0U-8c

When it was almost done installing on the target usb I got this error message: "Unable to install GRUB in dev/sda Executing 'grub-install/dev/sda' failed. This is a fatal error."

Then after I closed the message and it kinda glitched out and then I got the installation complet ...

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Bo-Yin Yang avatar
ibus does not work on chrome
pn flag

I am using Xubuntu 22.04 and using ibus-cangjie.

It works just fine on every X app except for chrome, and it seems only inside applications such as google chat or slack. In chrome apps, often cangjie keys seem to disappear, and there is this error message:

(google-chrome:1257322): Gdk-WARNING **: hh:mm:ss.sss: gdk_window_set_user_time called on non-toplevel

So if I type a period, I can often proceed to c ...

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dupclik avatar
how can i fix this update problem?
rw flag

E: Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/lib/command-not-found/ -a -e /usr/lib/cnf-update-db; then /usr/lib/cnf-update-db > /dev/null; fi'

Score: 1
Eaten by a Grue avatar
Using x11vnc when the screen is off
in flag

I have a small server hooked up to a projector and recently upgraded from Ubuntu 18 to Ubuntu 22. There were some issues at first with screensharing via x11vnc but after some tinkering and disabling wayland I was able to get it working.

The issue I'm having is that when the projector is turned off, the screen sharing no longer works. I seem to connect and I can see application windows, but the d ...

Score: 2
Gabriel Staples avatar
Trying to install gcc-8 and g++-8 on Ubuntu 22.04
cn flag

Before you say it's a duplicate, the wget links in this answer are dead, and I need g++-8 too, not just gcc-8: How to resolve the error : 'Package gcc-8 has no installation candidate' ? I'm trying to install it by sudo-apt install gcc-8.

This page seems to indicate gcc-8 is a valid package in Ubuntu 22.04: https://linux-packages.com/ubuntu-jammy-jellyfish/package/gcc-8 <-- what does this page me ...

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TIZ012 avatar
Clevo laptop with 12th gen Intel cpu and nvidia rtx 3060 - nvidia GPU stopped working suddenly
us flag

Editing this question in the hope that someone could find it useful.

After automatically updating drivers and kernel on Ubuntu 22.04 the laptop GPU stopped working. There was no apparent reason and the problem happened suddenly, after rebooting from suspend.

Symptoms to look out for -

  • The laptop would boot to a black screen or a black screen with a thin line at the bottom of the screen, showing t ...
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Aravindh P avatar
Why has my 32 GB bootable USB stick shrunk to 3.88 MB
is flag

I wanted to install Ubuntu 20.04.5 LTS and created a bootable USB stick using balenaEtcher. I used a 32 GB SanDisk USB stick for this. After doing this I found that the size was reduced to 3.88 MB and the contents of the USB drive was just a folder named efi, which in turn had a folder named 'boot' with the following files: bootx64.efi, grubx64.efi, mmx64.efi.

I found out that the USB drive had  ...

Score: 0
Usermaxn avatar
on startup login screen has default wallpaper
jp flag

I am on kubuntu 22.04 and when I start up my device, login screen shows the default login background not the one I set in settings.

waking from sleep or locking screen shows correct login screen background

problem is only with first login screen that shows on startup

ps. I do not mean different sddm I mean the background wallpaper shown in the login screen

Score: 1
Ralle Mc Black avatar
Addon nfs was not found in any repository microk8s
in flag

I have a microk8s cluster with 3 nodes, running in multipass on Ubuntu 22.04. All running on my old Macbookpro mid2012. (with ubuntu, 22.04 i removed Macos)

I m getting this message when i execute the command:

microk8s enable nfs

Addon nfs was not found in any repository

I installed nfs on all 3 multipass intances.

sudo apt install -y nfs-common

dns enabled dashbord enabled I can access the cluster f ...

Score: 0
DreadFog avatar
How to see free space of permanently mounted drive (Ubuntu 22.04)
sx flag

I'm building from scratch a NAS with one 240 Gb NVME, to which I already added an other internal SSD of 250 Gb. Thing is, as I mounted it to /ssd as specified in the /etc/fstab, I can't seem to find the free space of that SSD anymore. In fact, even though I can create files in /ssd and it seems to work properly, Ubuntu only says that I have 240 Gbs of total space. What did I do wrong? Thanks :)

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gentijo avatar
22.04 / HP Omen 17 / RGB Keyboard
dj flag

Help,sometime in the recent past, my RGB keyboard sort of stopped working, it only works in breathing mode which I am assuming is the default mode when not connected. The keyboard used to work fine, you could only turn it off / on and not control the color but that was better than this on-off breathing mode.

I installed OpenRGB which fails to detect the keyboard and complains that i2c-dev is not  ...

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Kieran avatar
Bluetooth pairing problem
in flag

I have purchased this device to connect my Stereo system via Bluetooth to my PC. I want to play from and record to the PC.

https://www.etrond.com/collections/audio-gadgets/products/bluetooth-v5-0-transmitter-receiver-bt-duo

When in receive mode the device pairs and receives audio from the PC correctly.

When in transmit mode it will not pair with the PC so I can't record on the PC. It will pair with my Blu ...

Score: 1
Richard Okwuchukwu Jude avatar
Install WinSCP on Ubuntu 20.04
pm flag

I tried to install WinSCP, I got this error, sudo dpkg -i WinSCP-5.17.7-Ubuntu-20.04.deb

dpkg: error: cannot access archive 'WinSCP-5.17.7-Ubuntu-20.04.deb': No such file or directory

What do I do please?

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