I don’t know how much it is a bug or just an incorrect stuff, but anyway, here’s how I had broken and fixed my system.
I’ve been looking for a way to fix my problem with Telegram Desktop, everywhere mouse scroll was working fine, but out of sudden it’s stoped working specifically in this app.
Also I tried to found a solution how to implement on Linux a scroll on the mouse wheel, and found here solution for kubuntu, that I thought should be working and on my EOS with KDE Plasma.
It’s been said to edit a file at this location - /etc/X11/xorg.conf.
But I had no such file at this direction, so i tried to create it with this content -
Option «VertScrollDelta» “-111”
Option «HorizScrollDelta» “-111”
But after reboot my system started to stuck on mounting of the partitions from my second drive.
From grub - e - “linux” line + 3 - tty, I entirely removed from /etc/fstab everything besides my OS partition.
But it didn’t helped and system started to stuck on boot at this points -
[OK] reached target graphical interface
[OK] started Hostname Service
I looked at logs and found the error - Failed to read display number from pipe.
But drivers and everything else related to graphics was fine, so I stopped to think that perhaps system was broken by the updated and decided to do what I’ve should done first, removed my last action in system - sudo rm -f /etc/X11/xorg.conf
And everything started to work…
Moral - 1) undo your last action first when you encountered a problem 2) check first system changes in the VM. 3) Even the things that you think are harmless can broke your entire system in a unexpected ways.