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Polkit Login Screen issue in Kubuntu 22.04 lts

After yesterdays update, the login screen gets replaced by the dumbest '.. Contact system administrator' message. Ctrl alt F2 etc work fine. There are no issues in the boot messages. Syslog has a few ...
Mani A's user avatar
  • 1
0 votes
0 answers
90 views

(K)Ubuntu 23.10 Login Issue

Yesterday, I tried to install a Windows-based game on Kubuntu 23.10. I attempted installation multiple times using both Wine and Winetricks. Unfortunately, I couldn't succeed in the installation, and ...
Stockfish's user avatar
  • 601
0 votes
0 answers
106 views

kde screenlock wont accept password and have to first press switch user

I am on kubuntu jammy and I have run into a problem. when I lock screen with meta+L I can put in a password but clicking on the button or pressing enter wont work, it will show the animation of being ...
Usermaxn's user avatar
  • 217
0 votes
1 answer
148 views

libvirt-kvm and libvirt shows up as login profiles on Kubuntu 23.04

Last night, I want to install Qemu on my Kubuntu 23.04. I found this article to follow along to install Qemu on my computer: Install and Use Qemu on Ubuntu After reboot my pc, I notice libvirt-kvm ...
krillavilla's user avatar
3 votes
3 answers
2k views

Login screen does not appear after upgrade to 23.04

Upgraded today to Kubuntu 23.04 from 22.10, simply using the prompt that popped up in the bottom right of the screen (warning me that 22.10 would reach EOL in less than 90 days). All seemed to go well,...
meladoro's user avatar
1 vote
2 answers
555 views

Locked out of Kubuntu due to fprintd. I have the password but I still can't get in

I have a Thinkpad x1 Carbon (2nd Gen) with a fingerprint scanner. The machine has Kubuntu 22.04 (Jammy Jellyfish) installed. Since it's Kubuntu, I installed fprintd to scan my fingerprint for login. ...
James Li's user avatar
0 votes
0 answers
1k views

How to REMOVE clock from Login (SDDM) AND Lock Screen KDE Plasma?

I've been rummaging around /usr/share looking for the files to remove the clock from both the Login and Lock screens, but so far nothing has worked, and recently removing the Clock.Qml file from /usr/...
user avatar
0 votes
1 answer
357 views

Kubuntu 20.04 Login Screen scaling

I have recently had to reinstall Kubuntu 20.04. I am using HDMI to a HDTV and I have set the scaling to 112.5%. This works great, but the login screen is super small. I have checked around online, ...
Lost_Ones's user avatar
1 vote
0 answers
912 views

How to logout and login to Ubuntu runing on VirtualBox

I logged out from my Ubuntu VM and then I got the black screen as below. There is no option to log back-in to the machine. The only option I have is to restart the VM which I don't want. Is there a ...
Muhammad Tariq's user avatar
3 votes
2 answers
2k views

Login Screen gets stuck after entering password on Kubuntu

On Kubuntu here. When I enter my password on the login screen and press enter, all the buttons slightly fade and the screen just gets stuck with only the mouse cursor really being able to move. ...
EyeScream's user avatar
  • 121
0 votes
0 answers
108 views

Why does the Kubuntu 21.10 login screen stop responding?

Occasionally, when I try to sign in on Kubuntu 21.10, the login screen will no register keypresses or mouse clicks. I can still move the cursor around the screen, but cannot interact with the password ...
Lou Hannoe's user avatar
3 votes
3 answers
1k views

Kubuntu login screen is frozen when switching users

I have two users sessions running. I can switch between users without error most of the time. But after a while, after I try to switch users, on the login screen for the user I am swtiching to, the ...
Scorb's user avatar
  • 870
2 votes
2 answers
5k views

Can't login, although password is correct (ubuntu 20.04)

Recently my machine started to boot using a login screen featuring a laser-eyed bobcat (possibly a panther.) and the laser-puma doesn't accept my login (failed to start session , not a wrong password ...
jeremy_rutman's user avatar
1 vote
1 answer
192 views

Bash script not running when I boot my laptop

I am new to Linux and I've set it up just how I want it. However, when I am using my laptop at home, login screen appears on both laptop and external screen. I want it to appear just on my external ...
kosingas's user avatar
4 votes
1 answer
6k views

Can not login to SDDM using fingerprint on Kubuntu 20.10

Recently I've bought Lenovo ThinkPad X1 Carbon Gen8. Everything seems fine except one thing - I can't fully configure fingerprint reader. I've followed guide https://askubuntu.com/a/1082465/249099 and ...
Dmitrii Vinokurov's user avatar
7 votes
3 answers
3k views

No more 'switch user' from sddm

I've searched extensively and there are many mentions of this problem but it seems only a few disparate users have had it over the last few months. But the 3 Kubuntu systems I upgraded to 20.10 all ...
dargaud's user avatar
  • 948
0 votes
0 answers
2k views

KDE Plasma login service failed - login loop in SDDM

When I log in to my laptop with Kubuntu 20.10, I enter the password and wait for the desktop window to load but it does not show and it returns me to the initial login window. I ran the test several ...
Diego Aaron's user avatar
0 votes
1 answer
892 views

kubuntu 20.10 won't Start: xsession warning unable to write to /tmp

My Kubuntu 20.10 won't let me log in. It says: xsession: warning: unable to write to /tmp; x session may exit with an error I think the system updated it's kernel before it happened. What can i do to ...
Philipp_D's user avatar
0 votes
0 answers
165 views

Kubuntu Login log in 20.04 not working

Kubuntu Desktop over 20.04 has this nice option. In Settings > Notifications > Application - Configure > Plasma Workspace > Configure Events , we can set Login attempts to " Log to a ...
user227495's user avatar
  • 4,149
0 votes
1 answer
215 views

Ubuntu 18.04 with kubuntu /Plasma enable numlock on login

Hi I went through a lot of solutions and tried a couple of them. But till so far no progress. I went through Activating numlock on bootup - ArchWiki without succes. I installed numlockx sudo apt ...
Jack's user avatar
  • 1
0 votes
1 answer
416 views

stuck on login screen after Kubuntu 19 -> 20 upgrade

I feel a bit sheepish asking such a silly question, but how does one login in the new Kubuntu 20 login screen? Pressing Enter after typing my password does nothing, and I don't see any button to press ...
drkstr101's user avatar
  • 101
7 votes
6 answers
22k views

Kubuntu 20.04 plasma desktop does not start after login

I have a fresh install of Kubuntu 20.04, only 2 days old. I just installed some apps that I use and configured KDE to my liking. The system starts up quickly and I see the login screen, but when I ...
Moha's user avatar
  • 199
0 votes
1 answer
5k views

Kubuntu 20.04 shows only a black screen after login

I would like your help solving this issue. I recently installed Kubuntu 20.04 and sometimes (randomly, but specially after shutting down abruptly) the system gives no GUI after login (I'm not sure how ...
diogoccas's user avatar
0 votes
1 answer
1k views

Kubuntu login screen issue

i am sorry if i in wrong place to ask,and to share my problem and what i found,but i hope you give me the answers what i look. Well the situation - have installed Kubuntu to my client,and he was ...
Toni Vercetti's user avatar
3 votes
1 answer
1k views

So I moved from Ubuntu to Kubuntu and I get the default login screen

So I switched to Kubuntu with this command: sudo apt install kubuntu-desktop and everything works fine except one thing: the login screen. The login screen is the default one and I don't know how to ...
Sam Pan's user avatar
  • 353
1 vote
0 answers
262 views

Login in terminal during installation

I'm attempting to install a custom kubuntu image (made by me using cubic) in VirtualBox but I get an error saying that the installer crashed. Now I wanna see the logs to get some clues about what ...
Sebastian Yonekura Baeza's user avatar
1 vote
1 answer
221 views

How can I recover from faulty 19.10 upgrade?

I recently upgraded my system from 19.04 to 19.10. I spent about a day and a half using the new system (19.10)... I added a few software platforms (e.g., Eclipse, Android Studio, etc.) Now (without ...
TheGeeko61's user avatar
1 vote
1 answer
277 views

How to reduce login time of Kubuntu?

When I start my laptop, a blue screen with Kubuntu logo keeps loading for long time before the login screen appears. Because of that, boot time increased significantly. Is there any way to remove that ...
Navi's user avatar
  • 160
0 votes
1 answer
1k views

Kubuntu 18.04 not login from SDDM but from tty

I have installed Kubuntu 18.04 on my laptop (OMEN HP [17-w033dx ]) and today, just after enabling VT on the BIOS Setup and rebooting, Kubuntu not login from visual (SDDM) as usual. I disabled VT but ...
Yulio Aleman Jimenez's user avatar
3 votes
3 answers
5k views

Desktop fails to start, stuck in a login loop - Kubuntu 18.04

As the title suggests, I'm stuck in a login loop. I've tried the other suggestions askubuntu gave me, to no avail. My system and all software is up to date (as of Tuesday Jan 22). Can't tell if this ...
YMGenesis's user avatar
  • 103
2 votes
1 answer
2k views

What methods are there to restore a deleted theme? file:///usr/share/sddm//themes/breeze/Main.qml:No such file or directory

I'm very new to Linux. I rather like Kubuntu 18.04, but today I managed to break it. Using Discover, I deleted laptop battery controls and hastily agreed to remove a long list of dependencies. ...
dkelley's user avatar
  • 21
0 votes
1 answer
72 views

Unable to reach login page on Kubuntu

I've recently installed the last version of kubuntu, and, after a few days, the login page has seemingly dissappeared. Instead, when the computer boots I get a black screen in which I can type my ...
Pablo's user avatar
  • 1
2 votes
1 answer
13k views

Kubuntu shows error at login (file:///usr/share/sddm//themes/breeze/Main.qml:No such file or directory)

I moved over to the latest Kubuntu release and after successfully installing everything I removed some unwanted packages. However after a reboot I was stuck at the login screen showing an on screen ...
S Martin's user avatar
0 votes
1 answer
1k views

Can’t login to GUI but can on tty

I use Kubuntu. I can’t login to GUI but can on tty mode, I check the log and it show this log: invalid session "/var/lib/sddm/.desktop" The output of journalctl -xe:
Agitsa's user avatar
  • 1
1 vote
1 answer
442 views

lightdm-kde-greeter on multiseat do to let two simultaneous users login

I have two graphics cards, two monitors and some pairs of input devices. Till weeks ago they were working fine. Also with two simultaneous user logins. Now they behave strange: When user1 logins on ...
TadejP's user avatar
  • 428
0 votes
0 answers
520 views

KDE session not start

I have been using KDE in Ubuntu 18.04 since the first week after its release. Since last Friday I am unable to login to my account using KDE. Just the mouse pointer is shown on a black screen. ...
Miguel Rozsas's user avatar
1 vote
1 answer
3k views

How to change the default Username on a KDE Plasma Login screen

Whenever I start-up my desktop, or when it times out, I am presented with the "administrator" username on the login screen (please see example screenshot below). I then have to click on "Different ...
robbie70's user avatar
  • 133
7 votes
0 answers
1k views

X server on Kubuntu 18.04 crashes if NIS/NFS user is logged in

I updated a machine to Kubuntu 18.04 by a complete reinstall. We still have user management using NFS/NIS. Packages are installed, users can log in. I have one local user dhlocal (userid: 1000) with ...
Dirk Hillbrecht's user avatar
2 votes
1 answer
492 views

Graphical displays in .cshrc or .login files

I decided to follow a UNIX tutorial just to understand my Kubuntu a little bit more, in the tutorial's eighth chapter, I am advised to WARNING: NEVER put commands that run graphical displays (e.g. ...
Hans's user avatar
  • 1,301
3 votes
0 answers
4k views

How do I unlock kwallet automatically on login

Running Kubuntu 17.04. I do not have automatic login and have to enter my password to login. On login, I am prompted for the password of my kwallet (It is the same as my login password). How do I ...
deshmukh's user avatar
  • 4,081
2 votes
1 answer
2k views

How to swtich monitor order in the login screen?

I have a dual monitor setup using Kubuntu 17.04. The monitors are connected via DisplayPort to the GTX 1080 of my PC. The dual monitors work fine after the login, and their order is correct. However ...
Bakuriu's user avatar
  • 642
1 vote
1 answer
2k views

Installing i3WM on Kubuntu

I am using Kubuntu 17.04. I tried installing i3wm by executing $sudo apt-get install i3-wm However, once I logged out, I saw there was no place to switch to i3wm like in Unity. Moreover, The mouse ...
Vatsal Kanakiya's user avatar
1 vote
0 answers
297 views

Cannot login to Kubuntu after upgrading to 17.04 from 14.04

I am a Linux beginner, so please forgive mistakes and help me with easy explanations. I just upgraded Kubuntu on my Lenovo T440s Laptop to the current version, using do-release-upgrade. I am 95% sure, ...
Moritz's user avatar
  • 11
0 votes
1 answer
268 views

Keep session on while in virtual terminal

I like to use a virtual console (accessed by CTRL + ALT + F<1;6>) for sys configuration and management on my laptop. After returning to a KDE session (the one with GUI - no idea how do you call it :...
sjiamnocna's user avatar
1 vote
1 answer
882 views

Kubuntu black screen after login

Im using clean install of Kubuntu 16.04 for 2 days, but today after login screen (SDDM) I got black screen, I can only use TTY. So everything looks like normal till login screen, after I click login ...
tomsk's user avatar
  • 1,335
0 votes
1 answer
1k views

Kubuntu 16.10 doesn't let user login automatically

I recently installed Kubuntu 16.10 and decided to use Full Disk Encryption during installation (LVM with Encryption was the option I chose I believe). Now the thing is that the system asks me for ...
syazdani's user avatar
  • 113
1 vote
1 answer
933 views

Multiple config non writable errors after login on fresh install of Kubuntu 16.04

I was running 15.04 on my HP probook 640 G1 and all was running really well. I decided to upgrade this evening due to that version not being supported any more. I've installed 16.04.1 from live ...
GeekyB's user avatar
  • 11
1 vote
1 answer
454 views

No login sound in Kubuntu 16.10

Hi I am new to Kubuntu 16.10 and I have no startup or shutdown sound. I have looked everywhere in system settings and see no setting for either a startup login or shutdown sound. Can someone tell me ...
Saul Goldfarb's user avatar
1 vote
0 answers
359 views

Kubuntu 16.04 login trouble

My system has a Radeon 9250 card for graphics, and an AMD Athlon 3000+ 64-bit CPU. The motherboard is from Asus and it's an K8V SE Deluxe. I upgraded from 14.04 to 16.04.1 and all was well for a week, ...
Herman Kerkhofs's user avatar
1 vote
3 answers
8k views

Kubuntu 16.04 GUI not working, goes straight to terminal login

I recently updated to Kubuntu version 16.04 from version 14.04 after getting the upgrade notification. It successfully downloaded and installed, but after rebooting the system, it went straight to a ...
Tornado118's user avatar