CRITICAL: Login Freezes when login with custom username and password

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1

Login Freezes when attempting to login in SDDM Wayland session using custom username and password.

STEPS TO REPRODUCE

  1. install the latest version of KDENEON (stable edition)
  2. set Waylaid as window manager, reboot
  3. when attempting to login press Other, to allow entering custom username and password
  4. enter your username and press tab (or click on password field) and then it freezes
  5. behold

SOFTWARE/OS VERSIONS
KDE Neon User Edition
KDE Plasma Version: 6.2.3
KDE Frameworks Version: 6.8.0
Qt Version: 6.8.0
Nvidia Driver: nvidia-driver-565-open

ADDITIONAL INFORMATION
experienced it on two different machines with different NVIDIA GPU cards (1650 Super and 3090)
sometime it worked and I can login, but most of the time it wont, when using provided user field and just entering password it works fine

2

This looks like a QT 6.8 regression and is similar to the one reported in 494804 – With Qt 6.8 controls to log in or unlock screen are non-functional on some monitors when using the Breeze SDDM or Plasma theme ("TypeError: [thing] is not a function" error)

It was fixed in QT 6.8.1 but as KDE Neon is on 6.8 it is still an issue.

Can you try KDE Neon fails to pass the SDDM when an external screen is connected - #12 by guss77

Then reboot.

1 Like
3

Thanks for your reply and for letting know what this bug could be about. Thanks for the suggestion, unfortunately it does not help. Do you know when KDENOEN User Edition will be updated to QT 6.8.1 ?

4

Just make sure you are fully up to date on your system.
QT 6.8.1 should be available to install on there.

qdbus6 org.kde.KWin /KWin supportInformation | grep version

KWin version: 6.2.4
Qt compile version: 6.8.1
XCB compile version: 1.15
OpenGL version string: 4.5 (Core Profile) Mesa 24.0.9-0ubuntu0.2
OpenGL shading language version string: 4.50
OpenGL version: 4.5
GLSL version: 4.50
Mesa version: 24.0.9
X server version: 1.23.2
Linux kernel version: 6.8
1 Like
5

I have upgraded to 6.8.1 and it solved the problem!

KWin version: 6.2.4
Qt compile version: 6.8.1
XCB compile version: 1.15
OpenGL version string: 3.1.0 NVIDIA 565.57.01
OpenGL shading language version string: 1.40 NVIDIA via Cg compiler
Driver version: 565.57.1
OpenGL version: 3.1
GLSL version: 1.40
X server version: 1.23.2
Linux kernel version: 6.8