r/Kubuntu

I'm running Kubuntu 26.40 can I upgrade the kernel to 7.2 without blowing up my system? If so what will happen?

Thanks in advance!

Hello,

Trying to install Kubuntu 26.04 from a live session on a PC which has an nvidia rtx3080 (ampere) GPU.

No matter what I try, I can not get the KDE DE to load. Most success i've got so far is getting to login manager screen.

Safe Graphics mode craps out with a blank screen.

I've tried various combinations of boot aguments: nomodeset, blacklisting nouveau, etc. I've tried to drop to console and install nvidia-drivers (apt install ubuntu-drivers). I've tried to install x11 and have SDDM login to a plasma-session-x11, all to no avail.

Is there any trick that I'm not aware of, that would get to a live KDE working session?

Thanks!

There is something strange about firefox (snap version 153.0.4) and torrent programs. I have a number of different ones installed in my /usr/bin/ and I keep thinking that the firefox dialog should be able to select one ... but it will not let me open /usr or any other directory in / other than /home/myhome

Now, this makes no sense to me since the stuff in /usr/bin is accessible. The command ls -ld /usr returns drwxr-xr-x 17 root root 4096 Apr 8 2018 /usr

which should be okay?

Maybe it's time to say good bye to snap firefox???

I will be upgrading my laptop to 16 gigs in a month or two , for the time being i want to know if kubuntu is lightweight and stable for my specs . Thank you

First, I'm happy to have finally ditched windows. So far, Kubuntu is able to do everything I was worried about losing, but I am curious about cloning.

I used to use a program called "driveclone" and I loved it. I would make incremental scheduled cloning and also help my friends by cloning their drives if they needed to replace their ssd for some reason. However, it looks like the only cloning software for Linux is in the form of bootable usb drives.

I will admit, I would like to have a cloning software that I could run from linux. If there really isn't, I'm sure I can live with it when compared to all the other things I was fighting windows over, but I figured I would ask, just in case there was something

Hello all,

I don't have any bug report or the likes, just my experience and wanted to see if this is normal behaviour or a bug.

I started using Kubuntu on 24.04 and upgrade to every major release while being on 26.04 today.

Every single major upgrade all of my or most of my APT repos got removed. I manually added them all, or so I thought.

Opened Element (matrix) app today which gave me a error saying my version was too old, thinking I always keep everything up to date with Discover and sudo apt update I checked and it was 1 year old software.. my APT repo was missing, I added it and updated and it works now but man.. is this is a major security issue if peoples APT repo disappear?

Are .deb packages not the best way to install using a .deb system? I always pick .deb over snap or flatpak but man is it a headache to keep track of and update.

I’ve been an Ubuntu (GNOME) user for years. I briefly flirted with Pop!_OS when COSMIC came along, but I felt it still wasn’t quite ready. I also tried Zorin OS, and while I found it a bit bland, it does exactly what it promises, so no criticism there.
Then I saw how far KDE Plasma had come and decided to give it a shot with Fedora. Unfortunately, I ran into a lot of problems right from the installation: GPU detection issues, problems recognizing my partitions, and GRUB issues.
After a lot of troubleshooting, research, and tweaking, I finally managed to get Fedora running stable in a dual-boot setup with Windows 11, while keeping Zorin OS around as a backup.
Still, I missed the stability and simplicity of Ubuntu. When the new LTS came out, I decided to take another look. The problem was that, by then, I was completely convinced that when it comes to the interface and overall user experience, KDE Plasma was the answer.
So I went with Kubuntu, and my experience has been pretty much perfect.
Zero issues with installation, partitioning, dual boot, GPU drivers, or third-party plugins. It just works.
I think I’ve finally found what I was looking for.

السلام عليكم، أول مرة احمل لينكس علي جهازي الشخصي وبعد تدوير ركزت علي توزيعة kubuntu بس مشكلتي انها بتستخدم snap وبعد ما سمعت كتير عنه وعن مشاكله فا حبيت انزل flatpack بس كنت عاوز اعرف هل حد عنده تجربة في حاجة زي كده وحصلتله مشاكل بعدين مثلاً زي ان snap يرجع تاني أو ان بعض البرامج متشتغلش.
لما سألت جيمناي قالي سيب سناب وخلي فلات باك هو الأساسي عشان ممكن بعض برامج اوبنتو بتكون شغالة عن طريق سناب فقط.
وياريت لو حد عمل كده ومحلصتش ليه مشاكل يكتبلي سكربت او كود معين اكتبه في الكونسول.
(🥲 انا مش متخصص انا كل الي بعمله بنسخ الكود واحطه ولو لمحت خطأ بقوم مصوره ل gemini وهو يقولي الحل ايه)

After installing the 64 bit zip file and extracting, attempting to run the executable file leads to a service crash saying it has "encountered a fatal error and was closed"

The 32 bit appimage can not be executed, even after installing libfuse

Using a command prompt to install the package results in an unsupported file or not being able to locate the package

I did verify files were executable, but im now at the end of what I know how and what to do.

So I'm running Kubuntu 26.04 and recently updated my motherboard's BIOS. I'm using the Gigabyte B850i Aorus pro Rev 1.0 motherboard. Before the update everything worked fine but after installing the latest BIOS available from the website my game controller no longer works when connected via Bluetooth. It works when connected using a cable so I know the controller is not the problem.

I tried everything. From unisntalling and resintalling xpadneo, to running sudo rfkill unblock bluetooth and even doing a full power down by disconnecting my PC PSU. Can anybody help me fix this?

My PC has a R7 9700x, 48G of DDR5 and as mentioned the motherboard is the Gigabyte B850i Aorus Pro Rev 1.0.

Please help

Edit: Fixed the problem. Turns out that after the BIOS update secure boot was turned on in the BIOS without me noticing. I turned it off and the controller works perfectly.

I Was about to completely reinstall Kubuntu until I decided to give a try to get xpadneo working. When I tried to manually get it started I got an error. After googling, it turned out that the error comes from having secure boot on and it was preventing the xpadneo driver from recognizing the controller input even though it was properly connected via Bluetooth.

Introducing BootPrep 2.0.0, a Snapper, Btrfs, and GRUB utility for Kubuntu.

 

https://github.com/mcsgeek/bootprep

 

As many know, when you install Kubuntu with the default / Btrfs layout, perform a snapper rollback, and reboot, nothing happens. Installing BootPrep solves this without requiring you to learn how to change the default subvolume layout installed by Kubuntu.
 
 Tested on Kubuntu 26.04 using the default Btrfs installation layout.

 

Select Btrfs

• Choose how you want to install Kubuntu, and choose the Btrfs file system.
• Add a swap file, don’t add a swap file, your choice.

 

https://preview.redd.it/xgrskr9nurjh1.png?width=1684&format=png&auto=webp&s=7fb9d0ee8f99642b8e8bb57b3b75df764f9799da

 

That’s it. Click next, fill out user information, and let Kubuntu’s installer do its thing and finish the install.

 

• Make sure btrfs-progs is installed before installing BootPrep
  • sudo apt install btrfs-progs
• Install BootPrep
  • git clone https://github.com/mcsgeek/bootprep.git 
  • cd bootprep
  • chmod +x bootprep bootprep-btrfs bootprep-install.sh 99_bootprep
  • sudo ./bootprep-install.sh
• If already installed, you can upgrade BootPrep
  • chmod +x bootprep bootprep-btrfs bootprep-upgrade.sh 99_bootprep
  • sudo ./bootprep-upgrade.sh

 

Note: Your system can continue to boot the original @ root volume. BootPrep remains dormant until a snapshot is presented as default for the next boot by either a snapper rollback or bootprep-btrfs activate command.

 

• Install and configure Snapper
• Set up your preferred additional subvolumes or use the add_subvolumes tool listed below, which includes suggested defaults for bulk adds.
• Optionally, install btrfs-assistant, btrfsmaintenance, and/or snapper-gui
• Optionally, clone and install grub-btrfs from GitHub, if you want snapshots available in the GRUB menu at boot.

99_bootprep

The Snapper plugin that detects rollback and sends the command ‘bootprep prepare <snapshot-number>’

 

sudo bootprep prepare <snapshot-number>

Prepares the system to boot the next snapshot selected as default and made writable by Snapper, Btrfs, and/or bootprep-btrfs operations. This is invoked automatically when a ‘snapper rollback’ or a ‘bootprep-btrfs activate <snapshot-number>’ action is performed, but could also be run manually from a command line when using a Btrfs command to select the next default subvolume and another to make the subvolume writable.

 

sudo bootprep-btrfs activate <snapshot-number>

bootprep-btrfs is a Btrfs wrapper that looks out for ‘activate <snapshot-number>’ then selects the given snapshot number as the next default Btrfs subvolume, makes it writable, and sends the ‘bootprep prepare <snapshot-number>’ command to prepare the system for the next boot.  All other command arguments go directly to Btrfs for processing.  Example: ‘sudo bootprep-btrfs subvolume list /’ sends to Btrfs and becomes ‘sudo btrfs subvolume list /’

 

There are also separate scripts in my other repositories, listed below, that are BootPrep’s companion utilities.

 

https://github.com/mcsgeek

 

add_subvolumes – bulk add new subvolumes based on lists. If directories in the list do not exist, they will be created. There are two lists, one for root subvolumes and one for home subvolumes.

 

cleanup-bootstrap-root – Safely cleans the original bootstrap root while preserving Btrfs subvolumes and protected directories like /boot, /.snapshots, etc. Once booting in a snapshot has been established, this can be run to clean the original root.  Because data contained in the original bootstrap root will become stale over time, there is no reliable way of going back without causing instability, and this cleanup allows a path for existing directories to be converted to subvolumes without Btrfs commands failing because they already exist in the original root, where converted directories would be relocated.

 

dpkg-pre-post-snapper – Creates descriptive Snapper pre and post snapshots. It lists the first package, truncates additional packages, and replaces with a count.  Example: “install w3m +3 pkg”.

 

snapshot-chroot – Creates a recovery chroot from a snapshot, automatically detects the last successfully booted snapshot by default, then asks before applying and allows user to select a different snapshot.

 

add_updategrub-service – Installs a systemd service that runs update-grub during system shutdown.  Helpful for auto-updating the GRUB menu.  

I hate snaps and I wanna install apps, but Discover shows only the snap ones. Is there a site, where I could see the list of apps and just copy the commands and paste to terminal?

Title

Hello everyone,
I like kde so far, but i can't help to notice, the kde launcher is slower than gnome launcher, To give you insight, if i put my kubuntu on performance mode, and my ubuntu on battery saver mode, the gnome launcher is hilariously faster than kde launcher.
I wonder why? if anyone knows the answer,
And is there any solution.
I'm talking about both launchers of kde, who are triggered by alt+space and meta .
EDIT:

One solution made it better, disabling some plugins for launcher.

You can down vote me as you want. but there is a better experienced person who gave me a good solution. i thank him.