I am running sddm and on shutdown (no splash screen) sddm restarts sddm-helper and the logon screen reappears. Sometimes it disappears about 5 sec later and the shutdown completes, while in other cases it stays up forever (minutes) and I have have to shutdown while pushing the power switch. When it displays the logon screen, I can enter the username and password (but nothing happens, or push the various buttons (shutdown, login,...) but nothing happens. Note I have no idea if this is the right place to report this (it is not really a systemsettings problem) , but while there is a kdm product in the list, there is no sddm product.
Created attachment 105247 [details] journalctl from shutdown on system which eventually did shut down This is the journalctl output from a time when the system did finally shut down Note that The X server on :0 is shut down, but then sddm restarts the X server on vt1 and restarts the sddm-greeter Why is it doing this on a shutdown?
Created attachment 105248 [details] journalctl from a case where I had to hit the power switch on the laptop This was a case where the greeter came up and never went down for at least a minute. I had to shutdown by hitting the power switch. Not good.
This disastrous Plasma5 5.10 stable update has totally messed up my computer; 5.10 Release Candidate worked perfectly. As well as for many other users, at the end of the update this message has appeared: https://forums.opensuse.org/showthread.php/525168-It-blocks-the-PC After restarting the computer, sddm (or sddm-greeter) has crashed (SIGINT). Here I have posted some backtrace: https://forums.opensuse.org/showthread.php/525135-Black-screen-after-a-huge-update-to-Plasma-5-10-and-libQt-5-9 For example: /var/log/sddm.log .. [04:31:52.688] (II) DAEMON: Removing display ":0" ... [04:31:52.688] (II) DAEMON: Adding new display on vt 7 ... [04:31:52.688] (II) DAEMON: Display server starting... [04:31:52.689] (II) DAEMON: Running: /usr/bin/X -nolisten tcp -auth /run/sddm/{36398a0e-9966-44e9-b254-89d1913fda75} -background none -noreset -displayfd 19 vt7 [04:31:53.611] (II) DAEMON: Setting default cursor [04:31:53.631] (II) DAEMON: Running display setup script "/etc/X11/xdm/Xsetup" [04:31:53.748] (II) DAEMON: Display server started. [04:31:53.749] (II) DAEMON: Socket server starting... [04:31:53.749] (II) DAEMON: Socket server started. [04:31:53.749] (II) DAEMON: Greeter starting... [04:31:53.750] (II) DAEMON: Adding cookie to "/run/sddm/{36398a0e-9966-44e9-b254-89d1913fda75}" [04:31:53.815] (II) DAEMON: Greeter session started successfully [04:31:54.036] (II) DAEMON: Message received from greeter: Connect [04:31:56.363] (WW) DAEMON: Auth: sddm-helper exited with 11 [04:31:56.363] (II) DAEMON: Greeter stopped. [04:32:02.588] (WW) DAEMON: Signal received: SIGINT [04:32:02.589] (II) DAEMON: Socket server stopping... [04:32:02.589] (II) DAEMON: Socket server stopped. [04:32:02.589] (II) DAEMON: Display server stopping... [04:32:02.631] (II) DAEMON: Display server stopped. [04:32:02.631] (II) DAEMON: Running display stop script "/usr/share/sddm/scripts/Xstop" sddm-greeter --test-mode [21:44:36.633] (WW) GREETER: QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-ralph' [21:44:36.661] (II) GREETER: Reading from "/usr/share/xsessions/default.desktop" [21:44:36.661] (II) GREETER: Reading from "/usr/share/xsessions/gnome-classic.desktop" [21:44:36.662] (II) GREETER: Reading from "/usr/share/xsessions/gnome.desktop" [21:44:36.662] (II) GREETER: Reading from "/usr/share/xsessions/icewm-session.desktop" [21:44:36.662] (II) GREETER: Reading from "/usr/share/xsessions/icewm.desktop" [21:44:36.663] (II) GREETER: Reading from "/usr/share/xsessions/kde-plasma.desktop" [21:44:36.663] (II) GREETER: Reading from "/usr/share/xsessions/plasma5.desktop" [21:44:36.663] (II) GREETER: Reading from "/usr/share/xsessions/sle-classic.desktop" [21:44:36.663] (II) GREETER: Reading from "/usr/share/xsessions/xsession.desktop" [21:44:36.670] (EE) GREETER: Socket error: "QLocalSocket::connectToServer: Invalid name" [21:44:36.731] (WW) GREETER: file:///Main.qml: No such file or directory Segmentation fault (core dumped) gdb sddm-greeter Starting program: /usr/bin/sddm-greeter [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". [22:59:50.370] (WW) GREETER: QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-ralph' [New Thread 0x7fffe8f7f700 (LWP 5293)] [22:59:50.420] (II) GREETER: Reading from "/usr/share/xsessions/default.desktop" [22:59:50.435] (II) GREETER: Reading from "/usr/share/xsessions/gnome-classic.desktop" [22:59:50.444] (II) GREETER: Reading from "/usr/share/xsessions/gnome.desktop" [22:59:50.451] (II) GREETER: Reading from "/usr/share/xsessions/icewm-session.desktop" [22:59:50.461] (II) GREETER: Reading from "/usr/share/xsessions/icewm.desktop" [22:59:50.462] (II) GREETER: Reading from "/usr/share/xsessions/kde-plasma.desktop" [22:59:50.467] (II) GREETER: Reading from "/usr/share/xsessions/plasma5.desktop" [22:59:50.467] (II) GREETER: Reading from "/usr/share/xsessions/sle-classic.desktop" [22:59:50.471] (II) GREETER: Reading from "/usr/share/xsessions/xsession.desktop" [22:59:50.524] (EE) GREETER: Socket error: "QLocalSocket::connectToServer: Invalid name" [22:59:50.525] (EE) GREETER: Cannot connect to the daemon - is it running? [New Thread 0x7fffe318d700 (LWP 5294)] [22:59:50.608] (WW) GREETER: file:///Main.qml: No such file or directory Thread 1 "sddm-greeter" received signal SIGSEGV, Segmentation fault. 0x00007ffff7539ab5 in QQuickItem::setCursor(QCursor const&) () from /usr/lib64/libQt5Quick.so.5 backtrace: #0 0x00007ffff7539ab5 in QQuickItem::setCursor(QCursor const&) () from /usr/lib64/libQt5Quick.so.5 #1 0x00000000004283ca in SDDM::GreeterApp::addViewForScreen(QScreen*) () #2 0x00000000004294e3 in SDDM::GreeterApp::GreeterApp(int&, char**) () #3 0x000000000041630d in main () I can run whatever Plasma5 application from IceWM and Gnome (through kdm or lightdm); sddm and gdm do not work.
OK, there are important news about this bug; the culprit is "subpixel-hinting"! I have disabled "subpixel-hinting" running systemsettings5 from IceWM and now Plasma 5.10 works properly!
If the bug is still present I suggest reporting it upstream to SDDM (https://github.com/sddm/sddm/issues)