Hi all,

As this came up in another chat, just wanted to break it out as there does appear to be a reported issue with AMD RDNA4 GPUS and kwin which manifests within things like the SDDM greeter amongst other things.

In both instances, forcing a software mouse cursor instead of using the hardware (GPU enabled) cursor at least allows for normal inputs. There's a few linked bug items in the report here including if you've gotten far enough to see error messages when trying to troubleshoot yourself.

TLDR; for the issue, there's a bit of faff going on with the new versions of tools coming with 26.10 which if you're forcing the update through rather than being prompted to upgrade, you'll possibly see on a AMD system but then hopefully not once some of the fixes are pushed out.

• Input lag at login only

So you create a file:

sudo nano /etc/sddm.conf.d/zz-greeter-gpu.conf

and type in the following:

[Wayland]

CompositorCommand=env KWIN_FORCE_SW_CURSOR=1 kwin_wayland --drm --no-lockscreen --no-global-shortcuts --locale1

Write it and reboot your system. This should force the software mouse cursor at the login screen and allow you to have normal inputs to login to the session normally.

If you ever want to get rid of that, as it's a system wide use, you use:

sudo rm /etc/sddm.conf.d/zz-greeter-gpu.conf

• Input lag once logged in

So this can mess things up like mouse performance in games and such but if you're experiencing the input lag once logged in also, you can run a similar set of commands to just enable the software cursor from the console:

mkdir -p ~/.config/plasma-workspace/env

echo 'export KWIN_FORCE_SW_CURSOR=1' > ~/.config/plasma-workspace/env/swcursor.sh

Then reboot. As we're just making the above for the current logged in user, it's a little easier to work with, but if you wish to remove this from a single command (whenever the bug fix lands) then use:

rm ~/.config/plasma-workspace/env/swcursor.sh

Hope that helps folks 😄

Hey kubuntu folks,

Is there a way to automatically change the screen frequency of a laptop? 60 HRZ on battery and 120 on power?

Thanks ahead

Wolf

I would like to start by saying that I never really thought I would use Linux in my life. However, what pushed me to dual boot Kubuntu and make it my main desktop operating system was that I was sick and tired of Windows. Most of my games would crash out of nowhere, and I was fed up with it.

So, I considered dual booting Linux on my system. Originally, I wanted to go with Linux Mint, but I didn't like the desktop environment. I wanted something similar to Windows, and that's when I discovered KDE Plasma. I decided to try stock Ubuntu to see if I could install KDE on it, and it worked. However, I later found out that having two desktop environments installed on the same system wasn't ideal.

After doing some research, I discovered Kubuntu.

When I first installed it, I was really happy because everything worked. Gaming on this distro surprised me beyond my expectations. Minecraft ran incredibly smoothly, and practically every game I usually play (GTA, RDR2, CK3, Minecraft, etc.) ran without any issues. Some games even performed better than they did on my Windows PC.

Hola, Uso Kubuntu y al actualizar el sistema me aparece siempre para actualizar KEK. Mi portatil tiene ya varios años y ni Dell ni Microsoft van a actualizar las claves KEK. Me gustaria saber como ocultar esta actualización en discover. Gracias.

So I installed Kubuntu on a new machine I just built and I've been having issues with the Wi-Fi, performance, and odd stuff like it not being able to install updates or taskbar icons turning invisible. I kinda want to try and repair the installation to see if these problems go away but if they don't I don't want to have to reinstall everything.

Booted off a Kubuntu 26.04.1 usb. All went okay for the 'try it' option, however a minor dual monitor problem.

When the initial desktop page was displaying on the laptop monitor, the external monitor had no mouse showing, and therefore had to use the laptop screen to go into system settings and adjust the display settings.

The laptop is Lenovo, the external monitor is Lenovo. I do have Ubuntu 26.04.1 installed at present on the same drive/SSD, and at login, no external monitor can be seen at all.

I use Fedora KDE. I installed the Nvidia driver and various other components such as codecs by following excellent guides I found on GitHub, specifically the "Fedora Post Install Guide" and "Fedora Noble Setup." I also enabled Secure Boot, and everything has been running smoothly for months.

However, I sometimes run into situations where only .deb packages are provided instead of .rpm files, which is a bit of a concern. There are certain packages I simply cannot find for Fedora. While alternatives usually exist, I sometimes can't locate the specific software I actually want to use.

Additionally, my laptop fails to wake up from sleep mode; I’m forced to cut the power completely.

What led you to switch from Fedora to a Kubuntu interim (non-LTS) release? Are you highly satisfied with Kubuntu? And if you prefer not to use Snap or `snapd`, how do you manage to avoid them?

System Specs:
Asus Tuf F16
13450HX RTX5050

Hey Folks,

Wanted to give the new non lts a try but to no prevail. The whole installation process was lagging and after finishing the install, the whole system had micro freezes every other second. Tried some configuration but none helped. Had to Go Back to the lts with No Problems. Also tried the newest Fedora Workstation with KDE and Had also No Problems.

Anyone else with this bug?

Only a few weeks ago, I did a fresh install of Kubuntu 26.04.1 ; it was quite an experience, not stable at all for me. See https://www.reddit.com/r/Ubuntu/comments/1ws5ejs/fresh_install_of_ubuntu_26041_any_alternate/

So I did a fresh install of Ubuntu/Gnome 26.04.1, which, although it is very boring compared to Kubuntu, is very stable. No problems at all.

If I wanted to test Kubuntu 26.04.1, in consideration of this laptop of vintage 2019, 8 Gn ram, a 4-quad CPU, and a lot of disk space to spare, what will be the easiest to do ?

Install in a VM or make a partition that I can boot into from grub ?

I have recently updated from the last LTS to 26.04 LTS and now I can't see the exif information in image files in Dolphin or Gwenview anymore.

Baloo is installed but disabled (I never use system search and I never liked how it stressed my SSD in the past).

How can I get the display of the exif information back? Using the terminal to look it quickly up is a bit tedious.

I been off my computer for a couple weeks and im trying to get the updates too well update. Im running into an issue does anyone know a way to fix this? (Sorry bad photo) - update i tried both commands nothing happened and so i decided to re enter the previous command to see and now it’s loading something if anyone is interested in helping that would be nice

Hey guyzz

I have hp pavillion gaming laptop having gpu nvidia gtx 1650 and my laptop is getting crash from about 6 months i tried different OS. I tried different OS but anyone is not consistently working.

I then again switched to windows but after 1 month it also started getting crash, Now I installed the kubuntu, it was also crashing so I disable nvidia driver, it worked for about 3-4 days and now again kubuntu was not booting, I force shutdown 4 times and then i got booted

If someone know the solution what can I do please let me know

Also I have tried different version of display driver but none of them helped. Also I tried disabling nvidia driver but I am blank now

Plz helpp🙏

appreciation post

So I've been thinking about picking up one of those auxiliary screens that plug into your USB c connector to like monitor stuff.

I asked on r/Linux questions if anybody has used any of those auxiliary screens. You know a little 9 in 12 in ones that you can put in your computer or under your screen etc.

Has anybody done it in Ubuntu or Kuuntu?

I saw there is a package that you can install, and I know I'm going to get my ass kicked doing it! I've been getting my ass kicked since 1997 using Linux!

My ask is has anybody else done this and is there a quasi simpler way to do this.

TYIA

yesterday on ubuntu 26.04.1 lts fresh install with secureboot on automatically installed the nvidia 595 open drivers during the setup, it was a hassle-free experience, is it the same for kubuntu 26.04?

Hello, like the title says, every once in a while, seemingly randomly, my screen will go black for a few seconds. It's almost as if the display cable was disconnected for a second and then plugged back in. I'm not really sure how to troubleshoot this and I'm not sure if it's a kubuntu issue or a kde or and nvidia driver issue or something else.

My system is:

7800x3d

rtx 4070

kubuntu 26.04

It's infrequent which makes it a bit harder, but what can I do to troubleshoot this? Thanks.

After upgrading from 24.04 LTS to 26.04 LTS last week I've run into an issue with the nvidia driver not being installed properly.

• uname -a shows the active kernel as 7.0.0-1015-oem
• kernel 7.0.0-38-generic is also installed

When running ubuntu-driver install it detects that nvidia-driver-580 should be installed and goes ahead with the installation.

However, it builds it for kernel 7.0.0-38-generic (i.e. not the currently running kernel 7.0.0-1015-oem), but then updates the initramfs for 7.0.0-1015-oem:

``` Loading new nvidia/580.178.04 DKMS files... Building for 7.0.0-38-generic Building for architecture x86_64

Building initial module nvidia/580.178.04 for 7.0.0-38-generic ... Signing module /var/lib/dkms/nvidia/580.178.04/build/nvidia.ko ... Installing /lib/modules/7.0.0-38-generic/updates/dkms/nvidia.ko.zst ... update-initramfs: Generating /boot/initrd.img-7.0.0-1015-oem ```

In the end there are no modules in /lib/modules/7.0.0-1015-oem but instead in /lib/modules/7.0.0-38-generic.

Does anyone have an idea to get out of this place?

PS: I don't know why the -oem kernel is installed or used.
PPS: When I boot the -generic kernel, the nvidia driver is loaded.

Hei, I'm wondering if anyone else is experiencing issues with suspend (to ram) or with locked sessions? On my machine, each time a my displays go into stand-by and/or put machine into suspend, I can' t resume from it and I have to do a hard reboot.

I've had claude take a look at the logs and it came up with this:

1. When the screens turn off (30 s after locking, from TurnOffDisplayIdleTimeoutWhenLockedSec=30 in ~/.config/powerdevilrc), your MSI MPG 274URDFW goes into standby. It drops its DisplayPort link and its built-in USB hub. Linux sees that as the monitor being unplugged.

2. KWin then reconfigures the outputs. Inside the NVIDIA driver, that call waits on the GPU's on-board firmware processor (GSP), and the firmware never answers.

3. KWin gets stuck inside the kernel. The nvidia-modeset thread then blocks behind it (INFO: task nvidia-modeset blocked … likely last held by task kwin_wayland).

4. All display output is frozen. Ctrl+Alt+F2 needs the same stuck driver, so it can't work either. The machine itself is still running: the kernel kept logging after each freeze.

It then recommends to downgrade to nvidia-driver-610 version ..

I'm currently on: Kubuntu 26.04.1 LTS / 7.0.0-38-generic / nvidia-driver-615-open

With 26.10 coming this week I was looking at what the update has, it does seem interesting enough to try it. I'm currently in 26.04LTS

Are there any downsides or risks when switching to an interim version? I'm aware you can't go back to LTS so my plan was to keep updating until the next LTS version comes out and so on.

What are the major differences between the interim and LTS? or is it just more of a background thing?

My computer is my normal daily PC where I watch, browse, download and game.

During my experience whit KDE plasma, I always wanted to make a custom task switcher. I have looked through the tutorial on [KDE.org](http://KDE.org), and sailed the web in search of a more in depth explanation for it, or something that is close to what I would want, but at the end it was only time lost.

Are custom task switchers unpopular?

Is there a more in depth tutorial online?

Thank you for your support.

As it states in the title, the firmware that kubuntu ships with won't update past 2021***

sudo apt install firmware-iwlwifi
firmware-iwlwifi is already the newest version (20210315-3).

As you can see, that's quite outdated. That said it was working last night but this isn't the first time this issue showed up.

The temporary fix is to pull the deb from here and install from the directory but it would be nice if there was an official fix for this. (I have yet to figure out how to add the one thing into the sources list but that's a later problem)

Edit: I did notice that the above conflicts with linux-firmware so I have removed that and still am running into issues with it not working or being picked up in lspci though the blutooth works fine.... Onto the network manager I suppose..