Kubuntu Forums - Kubuntu Forums .Net

[Post-Install]does anyone have the discover widget in their system tray set to Always Shown?

skyfishgoo — Fri, 11 Sep 2026 21:07:20 GMT

it seems that in the latest LTS release of kubuntu, the discover icon only appears in the system tray when there are updates pending... the rest of the time it is not shown and not even listed in the configure dialog for the system tray.

does anyone have the discover icon in their system tray full time, even when updates are not pending?

here is the bug report

https://bugs.kde.org/show_bug.cgi?id=511499

Trouble with Nvidia Driver update

LuisSeyfer — Tue, 08 Sep 2026 15:10:18 GMT

Trouble with Nvidia Driver update

LuisSeyfer — Tue, 08 Sep 2026 15:10:18 GMT

Operating System: Kubuntu 26.04 LTS
KDE Plasma Version: 6.6.6
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
Kernel Version: 7.0.0-2016-nvidia-bos (64-bit)
Graphics Platform: X11
Processors: 32 × AMD Ryzen 9 9950X3D 16-Core Processor
Memory: 96 GiB of RAM (93,8 GiB usable)
Graphics Processor: llvmpipe
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7E59
System Version: 2.0
Nvidia RTX 4090

I do mainly 2D/3D graphics. Because Lichtfeldstudio doesn't run under Wayland yet, I switched back to X11.
I had Nvidia 595 installed vie GUI driver manager, but wanted to update to 610 because of "Segmentation fault (core dumped)" crashes with Blender.
My first stupid mistake was that I forgot to setup Timeshift since upgrade to 26.04.
Since the Nvidia update attempt, the system is running the Nouveau driver and ignores my 2nd screen.

Code:

[I]NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.[/I]

I tried to purge with aptitude:

Code:

[I]sudo aptitude purge '~nnvidia'
sudo aptitude autoremove[/I]

I tried to install manually:

Code:

sudo aptitude install nvidia-driver-610-open nvidia-utils-610 nvidia-settings

Code:

sudo apt purge 'nvidia-*' 'libnvidia-*'
sudo apt autoremove

I tried blacklisting Nouveau and
sudo update-initramfs -u

In the meantime, I read 26.04 would use Dracut instead, but it seems not being installed.
Also, I found there are kernel modules left installed, which supposedly are kernelmodules replacing the older dkms method:

Code:

sudo aptitude search '~i nvidia'
i A linux-firmware-nvidia-graphics - Firmware for Nvidia graphics
i A linux-image-7.0.0-1016-nvidia - Signed kernel image nvidia
i A linux-image-7.0.0-2016-nvidia-bos - Signed kernel image nvidia-bos
i A linux-modules-7.0.0-1016-nvidia - Linux kernel modules for version 7.0.0
i A linux-modules-7.0.0-2016-nvidia-bos - Linux kernel modules for version 7.0.0
i A linux-objects-nvidia-595-7.0.0-1016-nvidia - Linux kernel nvidia modules for version 7.0.0-1016 (obj
i A linux-objects-nvidia-595-7.0.0-2016-nvidia-b - Linux kernel nvidia modules for version 7.0.0-2016 (obj
i A linux-signatures-nvidia-7.0.0-1016-nvidia - Linux kernel signatures for nvidia modules for version
i A linux-signatures-nvidia-7.0.0-2016-nvidia-bo - Linux kernel signatures for nvidia modules for version

Is there a way out of this mess? How?

Microsoft UEFI dbx?

Qqmike — Tue, 08 Sep 2026 14:18:33 GMT

Using K 24.04 now. In Discover updates, I see this: Microsoft UEFI dbx, 20241101 -> 20260402, and base files.
What does it mean?
That is to be ignored, right? (There is no MS Windows here.)

[ABANDONED]netflix vs browser wars

die.boer — Mon, 07 Sep 2026 16:59:27 GMT

ok guys i'm looking for some recommendations regarding browsers specifically netflix friendly...
some history with my battles
been on A LOT of distros and a lot of browsers , and all eventually starts giving me grief with netflix not playing properly , quality wise / stuttering.
now i've been on kubuntu couple months and using zen browser and all this time netflix worked perfectly.
until yesterday i decided to use wireless/bluetooth earpods rather than the wired earplugs i've been using all along when on netflix or wherever (i know that shouldn't caused a problem, but here we are)
since then netflix plays crap , even after switching bluetooth off.
i've then tried chrome browser (don't judge lol) which i have installed for a specific site , and 1st off it played netflix with bluetooth earpods fine, for like 10 min. then it started stuttering ...
i then cleared zen's history,cache /pages , about 1GB , but netflix still crap.
now like i said i've been through this before , and i've changed distros cause of it (probably not distros fault) , but i like to experiment anyway lol.
i'm super happy with kubuntu and really don't want to start distro hopping again , just to try goddamn netflix to work , every time all the time ...
so yea , if any1 uses netflix with no problem , i'd like to know which browser ?
cause i think i tried them all

flatpak update fails (bottles) in discover

skyfishgoo — Sun, 06 Sep 2026 16:17:36 GMT

discover today offered an update to my flatpak of bottles, but after starting to download the file i get this error

Code:

Aborted due to failure (While pulling runtime/org.freedesktop.Platform.GL32.default/x86_64/26.08 from remote flathub: While fetching https://dl.flathub.org/repo/objects/94/6c2b5c57340e5c6b6a8e13f881976167d28161e42c45d5d6876cbeba64fb66.filez: [92] Stream error in the HTTP/2 framing layer)

.

i've tried running sudo flatpak repair and breezes thru the bottles runtime without issue, this was the output at completion.

Code:

[159/159] Verifying flathub:runtime/org.kde.Platform/x86_64/6.10…
Checking remotes...
Pruning objects
Erasing .removed

the rest of my network seems to be working fine and apt updates from the console work as expected, every thing is up to date and freshly rebooted.

is this a wait and see situation or is there something more i can try?

SOLVED: Can't make a donation

Qqmike — Sat, 05 Sep 2026 21:51:11 GMT

Edit:
This problem is solved.
See my post below, Post # 9.

OP:

I usually make my (small) yearly donation at my profile/settings page using my credit card.
I don't use Paypal.
But this time, I do not see a way to bypass setting up a Paypal account with password.
Usually, Paypal has handled the payment for "Guests," taking care of your the card payment,
but not forcing you to set up a Paypal account.

Restart in Kubuntu won't work

Qqmike — Sat, 05 Sep 2026 15:43:35 GMT

Suddenly, past couple days, on my PC, with K 22.04, K > Restart won't work:
The screen freezes at the K screen with Kubuntu pulsing, but doesn't go any further.
Pressing the Restart button on the PC fixes it, and the PC reboots correctly back into Kubuntu.

Ideas on what's going on / how to fix it?

[Post-Install]sudo prompt

trvatrva — Fri, 04 Sep 2026 13:09:53 GMT

Can you explain to me what i did wrong. I type:

sudo -p welcome

but bash output:

expected one of these actions: --help, --version, --remove-timestamp, --validate, --list, --edit, --
login, --shell, a command as a positional argument, --reset-timestamp
usage: sudo -h | -K | -k | -V
usage: sudo [-ABbknS] [-p prompt] [-D directory] [-g group] [-u user] [-i | -s] [command [arg ...]]
usage: sudo -v [-ABknS] [-p prompt] [-g group] [-u user]
usage: sudo -l [-ABknS] [-p prompt] [-U user] [-g group] [-u user] [command [arg ...]]
usage: sudo -e [-ABknS] [-p prompt] [-D directory] [-g group] [-u user] file ...

How can I see my prompt?

[Pre-Install]Kubuntu on a HP ProBook 360 435 G8

mabra — Thu, 03 Sep 2026 17:27:58 GMT

Hi,
After a few years without Linux, I'm trying to switch away from Windows again.
After a failed attempt on a Fujitsu U9311x (no resume after suspend), I decided to ask the AI.
It recommended an HP ProBook 360 435 G8. Does anyone have this HP model up and running (without any issues)? I don’t need fingerprint recognition, but I definitely need the stylus to write.
The basics—closing the lid to suspend and opening it to resume work—should also work alongside the other features.
Before I order a leased return, I wanted to hear your opinion. Will it work, or should I steer clear?
Best regards and thanks in advance, Matthias

Translated with DeepL.com (free version)

Bluetooth Doesn't work at all :/

McKlane — Thu, 03 Sep 2026 17:14:18 GMT

Hello guys,
I just installed Kubuntu 26.04 on a NUC10i7FNH and everything work like a charm except Bluetooth.
I double checked the specs and the Nuc is supposed to have "Intel AX201 802.11AX dual-band 2.4 and 5.0 Ghz + Bluetooth V5.1"
I tried many things reading different forums like install BlueZ and Blueman ... but nothing seems to work
I'd appreciate some help

[Post-Install]Spectacle Issue (screen blanks)

fstorm08 — Tue, 01 Sep 2026 15:08:33 GMT

Hello Everyone,

I have search this quite a bit and not quite sure when this started.

When I try to run Spectacle (or any screenshot program), my screen blanks until I hit "ESC".

Kinfo output is below:

Operating System: Kubuntu 26.04 LTS
KDE Plasma Version: 6.6.6
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
Kernel Version: 7.0.0-30-generic (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 4600G with Radeon Graphics
Memory: 16 GiB of RAM (15.0 GiB usable)
Graphics Processor: AMD Radeon Graphics

My graphics are embedded on the CPU.

I have checked the "amdgpu" version and seems to be the latest driver and system is up to date with all the latest updates.

I did come across a suggestion to switch to x11 from Wayland but believe this version of Kubuntu I am on does not support x11.

I am not sure where to proceed from here.

Any suggestions would be much appreciated.

Thank you

[Post-Install]Can't enter /root directory

trvatrva — Tue, 01 Sep 2026 12:29:46 GMT

I'm trying to enter /root directory.

user@user-tobefilledbyoem:~$ sudo cd /root
[sudo: authenticate] Password:
sudo: 'cd': command not found
user@user-tobefilledbyoem:~$ sudo cd /root
sudo: 'cd': command not found

Also I am triying to enter this folder by Thunar, but system wrote:

Failed to open directory "root".
Error opening directory "/root": Permission denied.

Can you explain to me how I can get access to folder /root.

Lake Ontario it will always be

Snowhog — Sun, 30 Aug 2026 15:19:51 GMT

https://thehill.com/policy/transport...-lake-america/

If you are on the 'Net in the United States and use Google Maps, Lake Ontario now shows as Lake America! F that!

I use Proton VPN on my Desktop PC, so I just changed the connection to Canada. Google Maps shows me Lake Ontario as it should (and always will) be.

Moving, resizing, and replacing BTRFS file systems and their partitions

oshunluvr — Sat, 29 Aug 2026 23:35:24 GMT

I was checking my 4 NMVE drives for wear and my boot NVME drive showed "Percentage Used: 49%" while the other NVME drives are 0-3%. This number is the manufacturers best guess about the life span of the drive - so half dead.
I decided to move my booting BTRFS file system to a different drive and use the more worn one for backups. I detailed this here thinking someone else might find it useful.

The root file system takes the whole drive - 932G and is 50% full, The target drive also was 932G and had about 550G of backups on it. I wanted to reverse the setup: make the current backup drive the boot drive and vice versa. After reviewing all my file systems, I decided I would move the backup file system somewhere, move the root file system onto that drive, then move the backup file system to the worn drive, but I didn't have enough free space available and contiguous to do it.

I ended up following these steps:

Step 1) I had 2 EXT4 file systems - VM drives and their backups - that were less than half full so I moved the files off of one onto the other.

This left 290G free on that drive. There was also a sacrificial partition of 410G on the same drive, if combined: enough room in total to hold the backup file system, but still not contiguous.
Between these two available partitions was my Steam partition (BTRFS) of 250G and about 85% full.

Step 2) I used the "btrfs add" command to add the Steam file system to the 290G partition. This happens instantly. I then used "btrfs remove" to remove the 250G partition from the combined file system. This took about 50 minutes to complete.

I now had 590G free (290+250) and contiguous which is enough to hold the backup file system. A bonus was the getting-close-to-full Steam partition now has 40G more space.

Next, to move the backup file system to this drive so I can put the root file system in it's place.

Step 3) I again did "btrfs add" followed by "btrfs remove". This time it took about 2 hours to complete.

Note that since the target partition is smaller than the source, the file system will be reduced in size to fit in the smaller space. If there isn't enough room on the target partition for all the data, the command will abort immediately.

Next, to move the root file system to the now empty backup drive.

Step 4) This time, rather than add+remove which is slow, I used the "btrfs replace" command, which is much faster. This took less than 20 minutes.

Note that the "replace" command requires one extra step to run it. You need to know the device ID number which appears as "devid" when you use "btrfs filesystem show".

I now was more than half-way to completing my task. However, up to this point I had not rebooted and was still using the system for other tasks while btrfs did it's thing.

UH-OH!) Then I snafu'd by deciding to run "partprobe" since I had been moving partitions around. This froze the system immediately requiring a hard reset to reboot.

To make it more fun, on reboot I ended up in the GRUB console and had to manually boot from it. No biggie as I had done that before (too many times). Once I was booted, I simply ran "update-grub" and it rebooted successfully. I suspect had I updated grub without running partprobe, I would have been able to proceed without a reboot.

Step 5) Last task to complete my goal was to move the root backup file system from the Steam drive to the old root drive. Here, I used "btrfs replace" again.

However this time the file system was only 590G in size and was "replaced" to a 953G partition. In this scenario you have to "grow" the file system before you can use the additional free space.

Step 6) The command is simple and immediate: "btrfs fi resize max "

My goal was complete. All that was left was to re-create the deleted EXT4 partition for the VM backups and move the files back.

Key Take-aways and more info:

These operations are potentially harmful if you were to lose power. Backups are essential, and if possible, also a battery backup system for a desktop PC.

Notice that at no time did I document editing fstab or updating grub after moving btrfs file systems around. That's because I didn't need to. The add, remove, and replace functions retain and move file system labels and UUIDs. Unless you are mounting using something other than one of these two entries to mount or boot, there's no need to edit anything.

Except for my snafu, all of this happened while continuing to use the system normally. In fact, all the file systems must be mounted to use these commands. The whole operation (minus the grub repair) took about 4 hours.

In Step 2 I could have added the two partitions together without using "add|remove" to relocate the Steam partition. However, then Step 4 would have required two sets of "add|remove" commands instead of the single and much faster "replace" command.

The "btrfs replace" command cannot be cancelled or interrupted. To use "replace" the file system must be equal to or smaller that the target partition. Space permitting, you can shrink the file system in place and then use the command.

The "remove" command can be cancelled and resumed later. The "add" command is quickly reversible with "remove" unless you added files to the combined file system or have run a "balance" command.

Commands used and examples(all require sudo rights):

btrfs device add

btrfs de ad /dev/nvme3n1p3 /mnt/steam

btrfs device remove

btrfs dev remove /dev/nvme3n1p4 /mnt/steam

btrfs filesystem show (to retrieve the "devid" to use the replace command)

btrfs fi sh

btrfs replace start

btrfs rep start 2 /dev/nvme1n1 /mnt/root_backup

btrfs replace status (to see how the command is proceeding)

btrfs rep status

btrfs filesystem resize

btrfs fi re max /mnt/root_backup/