The display manager sddm-greeter doesn't manage to start successfully but crashes & dumps core, so that only a black screen with a mouse cursor remains. I'm running sddm-0.15.0 with qt-5.9.3 and kde-frameworks-5.40.0 The core dump & backtrace can be found as attachments, although they may not be that useful due to partly missing debug symbols. I try to provide a better trace the next days. ==== emerge --info ========= $ emerge --info sddm qtcore pam Portage 2.3.13 (python 3.4.5-final-0, default/linux/amd64/17.0/desktop/plasma/systemd, gcc-6.4.0, glibc-2.25-r9, 4.12.12-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-4.12.12-gentoo-x86_64-Intel-R-_Core-TM-_i7-4600U_CPU_@_2.10GHz-with-gentoo-2.4.1 KiB Mem: 12206276 total, 506292 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Mon, 18 Dec 2017 18:06:24 +0000 Head commit of repository gentoo: 286a4ec62ce76516c562fb93a5ab7c6a3b117e32 sh bash 4.3_p48-r1 ld GNU ld (Gentoo 2.29.1 p3) 2.29.1 ccache version 3.2.4 [disabled] app-shells/bash: 4.3_p48-r1::gentoo dev-java/java-config: 2.2.0-r3::gentoo dev-lang/perl: 5.24.3::gentoo dev-lang/python: 2.7.14-r1::gentoo, 3.4.5-r1::gentoo, 3.5.4-r1::gentoo, 3.6.3-r1::gentoo dev-util/ccache: 3.2.4::gentoo dev-util/cmake: 3.8.2::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.4.1-r2::gentoo sys-apps/openrc: 0.34.11::gentoo sys-apps/sandbox: 2.10-r4::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.11.6-r2::gentoo, 1.15.1-r1::gentoo sys-devel/binutils: 2.29.1-r1::gentoo sys-devel/gcc: 6.4.0::gentoo sys-devel/gcc-config: 1.8-r1::gentoo sys-devel/libtool: 2.4.6-r3::gentoo sys-devel/make: 4.2.1::gentoo sys-kernel/linux-headers: 4.4::gentoo (virtual/os-headers) sys-libs/glibc: 2.25-r9::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: git sync-uri: https://github.com/gentoo-mirror/gentoo priority: -1000 haskell location: /var/lib/layman/haskell sync-type: laymansync sync-uri: git://github.com/gentoo-haskell/gentoo-haskell.git masters: gentoo priority: 50 java location: /var/lib/layman/java sync-type: laymansync sync-uri: git://anongit.gentoo.org/proj/java.git masters: gentoo priority: 50 matrix location: /var/lib/layman/matrix sync-type: laymansync sync-uri: https://github.com/puretryout/matrix-overlay.git masters: gentoo priority: 50 seafile-stefaba location: /var/lib/layman/seafile-stefaba sync-type: laymansync sync-uri: https://github.com/StefaBa/seafile-portage-overlay.git masters: gentoo priority: 50 tlp location: /var/lib/layman/tlp sync-type: laymansync sync-uri: git://github.com/dywisor/tlp-portage.git masters: gentoo priority: 50 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=haswell -mavx2 -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/easy-rsa /usr/share/gnupg/qualified.txt /usr/share/maven-bin-3.3/conf /usr/share/themes/oxygen-gtk/gtk-2.0" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=haswell -mavx2 -O2 -pipe" DISTDIR="/var/db/repos/gentoo/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://de-mirror.org/gentoo/ rsync://de-mirror.org/gentoo/ ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo ftp://ftp.spline.inf.fu-berlin.de/mirrors/gentoo/ http://ftp.spline.inf.fu-berlin.de/mirrors/gentoo/" LANG="de_DE.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j5" PKGDIR="/var/db/pkg" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/tmp" USE="X a52 aac acl acpi activities alsa amd64 avahi berkdb bluetooth branding bzip2 cairo cdda cdr cli cracklib crypt cryptsetup cups cxx dbus declarative dri dts dvd dvdr emboss encode exif fam firefox flac fortran gdbm gif glamor gpm iconv icu ipv6 jack jpeg kde kipi kwallet lame lcms ldap libnotify mad mmx mng modules mp3 mp4 mpeg multilib ncurses networkmanager nls nptl ogg opengl openmp opus pam pango pcre pdf phonon plasma plymouth png policykit ppds pulseaudio qml qt3support qt5 readline scanner sdl seccomp semantic-desktop session spell sse sse2 ssl startup-notification svg systemd tcpd tiff truetype udev udisks ufw unicode upower usb vim-syntax vorbis vpx wayland widgets wxwidgets x264 xattr xcb xcomposite xinerama xml xv xvid zlib zsh-completion" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="krita braindump flow karbon plan sheets stage words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 fma3 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="synaptics evdev wacom" KERNEL="linux" L10N="de en" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="de en" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6 php7-0" POSTGRES_TARGETS="postgres9_5" PYTHON_SINGLE_TARGET="python3_5" PYTHON_TARGETS="python3_6 python3_5 python2_7" RUBY_TARGETS="ruby22" SANE_BACKENDS="hp" USERLAND="GNU" VIDEO_CARDS="intel i965 vesa" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS ================================================================= Package Settings ================================================================= x11-misc/sddm-0.15.0::gentoo was built with the following: USE="pam systemd (-consolekit) (-elogind)" ABI_X86="(64)" dev-qt/qtcore-4.8.7-r3::gentoo was built with the following: USE="exceptions glib iconv qt3support ssl (-aqua) -debug (-icu) -libressl -pch" ABI_X86="32 (64) (-x32)" CXXFLAGS="-march=haswell -mavx2 -O2 -pipe -std=gnu++98" dev-qt/qtcore-5.9.3::gentoo was built with the following: USE="debug icu systemd -test" ABI_X86="(64)" CFLAGS="-march=haswell -mavx2 -O2 -pipe -ggdb" CXXFLAGS="-march=haswell -mavx2 -O2 -pipe -ggdb" sys-libs/pam-1.2.1::gentoo was built with the following: USE="berkdb cracklib nls pie vim-syntax -audit -debug -nis (-selinux) -test" ABI_X86="32 (64) (-x32)"
Created attachment 510962 [details] call trace of sddm-greeter coredump the core dump itself was too bug, so here's the call stack
Does this happen also with the other versions in the tree? Did it ever work? Does it fail since your upgrade to gcc-6?
You're running ~arch Qt-5.9.3, so please try with also ~arch x11-misc/sddm-0.16.0-r3 or x11-misc/sddm-0.17.0.
works fine again with sddm-0.17.0 So we just have to remember to also stabilize newer sddm versions once qt-5.9 hits stable.
