I have a trouble, and maybe someone can help.

Yesterday, i try to build libosmscout with cmake and have install a lot of qt libs, such as libqt5multimedia, libqt5svg, etc. and then I wanted to press the system restart button, but nothing happened, then I turned off the laptop with the physical button. The next morning I found that I had a lock screen(I installed it for a long time ago, but it did not appear) where button "sing in" does not respond and pressing enter too, although before that day the login was always automatically, and the lock screen changed from a standard to a sweet theme, I uploaded the live image of kde neon to the USB flash drive, went through it to root partition of my main system, and deleted the sweet theme, hoping that the standard boot screen would return, but this did not happen and this lock screen appeared (pic 2), and this lockscreen does not respond to pressing enter too, and now I'm read all sddm conf files hoping to find the line where the lock screen is set, to set default or breeze lockscreen.

Sorry for bad English, hope you're understand this text

first lockscreen - https://ibb.co/hRpKCnh
Second lockscreen, when i deleted first - https://ibb.co/9bPWwzt

Try this:

You can load Plasma without using SDDM.
At the login screen hit ctrl-alt-f2 to switch to a TTY
Log in to the terminal here
Enter the command

Code: Select all

startplasma-x11

Your desktop will load, and you should be able to use System Settings to change things.

Alternatively, you can use a commandline text editor such as nano to edit the conf file found in /etc/sddm.conf.d, or simply rename or move it.

claydoh wrote:Try this:

You can load Plasma without using SDDM.
At the login screen hit ctrl-alt-f2 to switch to a TTY
Log in to the terminal here
Enter the command

Code: Select all

startplasma-x11

Your desktop will load, and you should be able to use System Settings to change things.

Alternatively, you can use a commandline text editor such as nano to edit the conf file found in /etc/sddm.conf.d, or simply rename or move it.

command startplasma not find, sec, trying alternative way

claydoh wrote:Try this:

You can load Plasma without using SDDM.
At the login screen hit ctrl-alt-f2 to switch to a TTY
Log in to the terminal here
Enter the command

Code: Select all

startplasma-x11

Your desktop will load, and you should be able to use System Settings to change things.

Alternatively, you can use a commandline text editor such as nano to edit the conf file found in /etc/sddm.conf.d, or simply rename or move it.

after deleting i see this https://ibb.co/SnBkML6

it is startplasma-x11, all one word not just startplasma

Or, try using startx instead

claydoh wrote:it is startplasma-x11, all one word not just startplasma

Or, try using startx instead

Oh, thanks, after startplasma-x11 terminal wrote $DISPLAY is not set or cannot connect to x server, i google it and find command systemctl enable sddm.service, maybe it will be helpfull for someone