System hangs out/freezes on external monitor after last update

[brahma]

i would no longer bother with installing the 470 version, but try downgrading kscreen and libkscreen, as described here:

Second screen makes all task bar icons disappear and window font is changed [KDE Plasma]

Extend right is an option from the screen menu opened with Win+P (or Fn+F10 on my laptop) I have better diagnostic now : when I reboot my computer in that mode, it triggers the issues I presented above; when I go to sleep and resume, I have other errors. I didn’t edit any of those files manually, the worst I did was run a command/program. Both /etc/X11/mhwd.d/nvidia.conf and /etc/X11/xorg.conf.d/90-mhwd.conf are empty (they only have a “generated by mhwd” comment). I don’t know where to look…

install the downgrade package, run the command, and downgrade to the previous version, not the version mentioned in the link, reboot