SUMMARY The upgrade from Plasma 5.15.2 to 5.15.3 made starting KDE impossible because of a wrong call to libdouble-conversion.so.3.0.0 which does not exist. Instead the existing symlink to the latest updated library is called /usr/lib/libdouble-conversion.so.3 without any zeros. Changing the name of the symlink to /usr/lib/libdouble-conversion.so.3.0.0 and adjusting the symlink /usr/lib/libdouble-conversion.so would remedy this temporarily. KDE should make the right call to the original symlink though. STEPS TO REPRODUCE 1. Update KDE Plasma desktop from 5.15.2 to 5.15.3 2. Reboot 3. Start X OBSERVED RESULT X will error out stating "Could not start kdeinit5. Check your installation." and return to the console. EXPECTED RESULT X should start normally without errors. SOFTWARE/OS VERSIONS Linux: 5.0.0-arch1-1-ARCH KDE Plasma Version: 5.15.3-1 KDE Frameworks Version: 5.56.1-1 Qt Version: 5.12.1-2 UPDATED PACKAGES: [2019-03-13 17:52] [ALPM] upgraded double-conversion (3.1.1-1 -> 3.1.4-1) [2019-03-13 17:52] [ALPM] upgraded bluedevil (1:5.15.2-1 -> 1:5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kdecoration (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded breeze (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded breeze-gtk (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded protobuf (3.6.1.3-1 -> 3.7.0-1) [2019-03-13 17:52] [ALPM] upgraded clementine (1.3.1-20 -> 1.3.1-21) [2019-03-13 17:52] [ALPM] upgraded kirigami2 (5.56.0-2 -> 5.56.1-1) [2019-03-13 17:52] [ALPM] upgraded discover (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded drkonqi (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded gtk-update-icon-cache (3.24.5-1 -> 3.24.7-1) [2019-03-13 17:52] [ALPM] upgraded gtk3 (3.24.5-1 -> 3.24.7-1) [2019-03-13 17:52] [ALPM] upgraded kactivitymanagerd (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kde-cli-tools (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded libksysguard (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded plasma-framework (5.56.0-3 -> 5.56.1-1) [2019-03-13 17:52] [ALPM] upgraded milou (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kwin (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded plasma-integration (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded plasma-workspace (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kdeplasma-addons (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kgamma5 (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded khotkeys (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kinfocenter (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kmenuedit (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded knetattach (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded libkscreen (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kscreen (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded ksshaskpass (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded ksysguard (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kwallet-pam (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kwayland-integration (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded kwrited (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded oxygen (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded plasma-browser-integration (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded polkit-kde-agent (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded systemsettings (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded plasma-desktop (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded plasma-nm (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded plasma-pa (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded plasma-sdk (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded plasma-vault (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded plasma-workspace-wallpapers (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded powerdevil (5.15.2-2 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded python-psutil (5.5.0-1 -> 5.6.0-1) [2019-03-13 17:52] [ALPM] upgraded sddm-kcm (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded user-manager (5.15.2-1 -> 5.15.3-1) [2019-03-13 17:52] [ALPM] upgraded xdg-desktop-portal-kde (5.15.2-1 -> 5.15.3-1)
Please report upgrade issues to the bug tracker of your distribution.
(In reply to Christoph Feck from comment #1) > Please report upgrade issues to the bug tracker of your distribution. Do this only it you are using some Arch derivative. If you are actually using real Arch, then you've either done a partial upgrade or you are using some sort of unsupported packages.