Login screen glitches so bad after updating Kubuntu 22.04

[Vara Martha]

I'm sorry i need to make new report because for some reason i can't add the package on the existing bug report here: https://bugs.launchpad.net/ubuntu/+bug/2038457

This happens hours ago after i got update through Dicover in my Kubuntu. I don't remember what's updated but the total size is 1,6 GB & most of it is for graphic things (i'm sorry i'm not familiar with this things)

It requires me to restart after update & so i did what it told. The booting process is fine & smooth. But once it shows login screen, it immediately glitching so bad i can't even see my mouse pointer. I believe this's the bug because the booting screen & bios looks fine. Please help! I need my laptop for work ;;;

Thank you very much for reading my bug report, i really need some help

-Update-

I did fix it by run into GNU Grub by clicking shift key multiple times during booting before Kubuntu logo shows up & booting using older kernel.

here's my complete laptop specification:

Laptop: Lenovo Ideapad 320
OS: Kubuntu 22.04
KDE Plasma Version: 5.24.7
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
Kernel Version: 5.15.0-84-generic (64-bit)
Graphics Platform: X11
Processors: 2 × AMD A9-9420 RADEON R5, 5 COMPUTE CORES 2C+3G
Memory: 7.1 GiB of RAM
Graphics Processor: STONEY

[Chris Guiver (guiverc)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:

apport-collect 2038496

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

( this issue is likely related to the video card being used, ie. kernel module related, but no details of that were provided due to online filing. the easiest fix is to replace `sddm` with another DM )

Bug reporting is about finding & fixing problems thus preventing future users from hitting the same bug.

I suspect a Support site would be more appropriate, eg. https://answers.launchpad.net/ubuntu. You can also find help with your problem in the support forum of your local Ubuntu community http://loco.ubuntu.com/ or asking at https://askubuntu.com or https://ubuntuforums.org, or for more support options please look at https://discourse.ubuntu.com/t/community-support/709

[Vara Martha (vhayoung)]

Thank you for the answers! I'll try those links once i'm home from work.

I'm sorry i don't know how to replace sddm with another DM. Could you please write step by step how to do that? Because i can't login to my user & the only access i can do is through BIOS

Please help me!