This is upstream bug https://github.com/systemd/systemd/issues/13769. Fix is ostensibly https://github.com/systemd/systemd-stable/commit/6e3cfe2e58f5dd93f66c05c74cda2879ea8a6888, though the upstream bug refers to a number of other fixing commits: https://github.com/systemd/systemd/issues/13769#issuecomment-543149655 Reproducible: Always Steps to Reproduce: Use lightdm. Suspend the machine and resume. Actual Results: Unable to unlock screen. Portage 2.3.76 (python 3.6.9-final-0, default/linux/amd64/17.1/systemd, gcc-9.2.0, glibc-2.29-r2, 5.3.10-gentoo x86_64) ================================================================= System uname: Linux-5.3.10-gentoo-x86_64-Intel-R-_Core-TM-_i7-8650U_CPU_@_1.90GHz-with-gentoo-2.6 KiB Mem: 16138720 total, 7032568 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Wed, 20 Nov 2019 17:30:01 +0000 Head commit of repository gentoo: e318a1281079060383183647b2d5ba312e89088d sh bash 4.4_p23-r1 ld GNU ld (Gentoo 2.32 p2) 2.32.0 ccache version 3.7.4 [enabled] app-shells/bash: 4.4_p23-r1::gentoo dev-java/java-config: 2.2.0-r4::gentoo dev-lang/perl: 5.28.2-r1::gentoo dev-lang/python: 2.7.16::gentoo, 3.6.9::gentoo dev-util/ccache: 3.7.4::gentoo dev-util/cmake: 3.14.6::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/sandbox: 2.13::gentoo sys-devel/autoconf: 2.13-r1::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.16.1-r1::gentoo sys-devel/binutils: 2.32-r1::gentoo sys-devel/gcc: 9.2.0-r2::gentoo sys-devel/gcc-config: 2.1::gentoo sys-devel/libtool: 2.4.6-r3::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 5.3-r1::gentoo (virtual/os-headers) sys-libs/glibc: 2.29-r2::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 sync-rsync-verify-jobs: 1 sync-rsync-verify-metamanifest: yes sync-rsync-extra-opts: sync-rsync-verify-max-age: 24 localrepo location: /usr/local/portage masters: gentoo chaoslab location: /var/lib/layman/chaoslab sync-type: laymansync sync-uri: https://gitlab.com/chaoslab/chaoslab-overlay.git masters: gentoo priority: 50 go-overlay location: /var/lib/layman/go-overlay sync-type: laymansync sync-uri: https://github.com/Dr-Terrible/go-overlay.git masters: gentoo priority: 50 hamper-overlay location: /var/lib/layman/hamper-overlay sync-type: laymansync sync-uri: https://github.com/Hamper/hamper-overlay.git masters: gentoo priority: 50 haskell location: /var/lib/layman/haskell sync-type: laymansync sync-uri: https://github.com/gentoo-haskell/gentoo-haskell.git masters: gentoo priority: 50 jorgicio location: /var/lib/layman/jorgicio sync-type: laymansync sync-uri: https://github.com/jorgicio/jorgicio-gentoo.git masters: gentoo priority: 50 raiagent location: /var/lib/layman/raiagent sync-type: laymansync sync-uri: https://github.com/leycec/raiagent masters: gentoo priority: 50 ssnb location: /var/lib/layman/ssnb sync-type: laymansync sync-uri: https://anongit.gentoo.org/git/repo/user/ssnb.git masters: gentoo priority: 50 throttled location: /var/lib/layman/throttled sync-type: laymansync sync-uri: git://github.com/erpalma/throttled-overlay.git masters: gentoo priority: 50 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="@FREE" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=native -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" 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" CXXFLAGS="-O2 -march=native -pipe" DISTDIR="/usr/portage/distfiles" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs ccache config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news nostrip parallel-fetch pid-sandbox preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://gentoo.mirrors.tera-byte.com/ ftp://mirrors.tera-byte.com/pub/gentoo http://gentoo.gossamerhost.com" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j10" PKGDIR="/usr/portage/packages" 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="/var/tmp" USE="X acl aio alsa amd64 berkdb bluetooth bzip2 cairo cleartype cli corefonts crypt cryptsetup cscope cups curl cxx dbus dri exif fish-completion fortran gdbm gif glib gnome-keyring gstreamer gtk gtk3 iconv inotify ipv6 jpeg json libtirpc multilib ncurses neovim networkmanager nls nptl nvme opengl openmp pam pcre pdf plymouth png pulseaudio python readline resolvconf ruby seccomp smp split-usr ssl svg systemd tcpd thunderbolt tiff timezone tk tmux truetype type1 udev uefi unicode usb vim vim-syntax wifi xattr xinerama xrandr zlib" ABI_X86="64" ADA_TARGET="gnat_2018" 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="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2 aes avx avx2 f16c fma3 pclmul popcnt sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="libinput keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" NETBEANS_MODULES="apisupport cnd groovy gsf harness ide identity j2ee java mobility nb php profiler soa visualweb webcommon websvccommon xml" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby25" USERLAND="GNU" VIDEO_CARDS="intel" 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, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
I assume this has been fixed in 244.3 or 245-rc1.
Yup, it was fixed in 244.