I don't exactly know where this comes from, as i didn't update xfce-session recently. This is an error message i found in .xsession-errors which may be related: xfce4-session: Querying suspend failed: The name org.freedesktop.UPower was not provided by any .service files emerge --info xfce4-session Portage 2.1.11.9 (default/linux/amd64/10.0/desktop, gcc-4.6.3, glibc-2.15-r3, 3.5.7-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-3.5.7-gentoo-x86_64-Intel-R-_Core-TM-_i7_CPU_Q_820_@_1.73GHz-with-gentoo-2.1 Timestamp of tree: Sat, 03 Nov 2012 17:30:01 +0000 app-shells/bash: 4.2_p37 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.7.3-r2, 3.2.3 dev-util/cmake: 2.8.9 dev-util/pkgconfig: 0.27.1 sys-apps/baselayout: 2.1-r1 sys-apps/openrc: 0.9.8.4 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.68 sys-devel/automake: 1.9.6-r3, 1.11.6 sys-devel/binutils: 2.22-r1 sys-devel/gcc: 4.5.3-r2, 4.6.3 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r3 sys-kernel/linux-headers: 3.1 (virtual/os-headers) sys-libs/glibc: 2.15-r3 Repositories: gentoo ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA Oracle-BCLA-JavaSE IBM-J1.6 PUEL" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O3 -fno-strict-aliasing -march=corei7 -mcx16 -mpopcnt -msahf -msse4 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/init.d /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O3 -fno-strict-aliasing -march=corei7 -mcx16 -mpopcnt -msahf -msse4 -pipe" DISTDIR="/scratch/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles news parallel-fetch parse-eapi-ebuild-head protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror ftp://ftp.join.uni-muenster.de/pub/linux/distributions/gentoo http://ftp.uni-erlangen.de/pub/mirrors/gentoo ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo http://mirrors.sec.informatik.tu-darmstadt.de/gentoo http://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo" LANG="de_DE.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="de de_DE en en_US en_GB" MAKEOPTS="-j8" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X a52 aac acpi alsa amd64 berkdb bluetooth bluray branding bzip2 cairo cdda cddb cdr cli consolekit cracklib crypt cups curl cxx dbus dri dts dvd dvdr egl emacs emboss encode exif expat faac faad fam ffmpeg firefox flac fontconfig gd gdbm gif gimp gmp gnome gnome-keyring gnutls graphviz gs gstreamer gtk iconv icu ithreads jbig jpeg jpeg2k lcms libgcrypt libnotify libproxy log4j mad mmx mmxext mng modules mp3 mp4 mpeg mudflap multilib mysql ncurses netpbm nls nptl nsplugin ntp ogg opengl openmp pam pango pcre pdf png policykit ppds pppd qt4 raw readline sdl session smp spell sqlite sse sse2 sse3 sse4 ssl ssse3 startup-notification svg system-sqlite tcpd threads tiff truetype udev udisks unicode upower usb vaapi vdpau vim-syntax vorbis wifi wxwidgets x264 xcb xcomposite xml xpm xv xvid zlib" 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" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" 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="kexi words flow plan sheets stage tables krita karbon braindump" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" FFTOOLS="aviocat ffeval" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev keyboard mouse synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="de de_DE en en_US en_GB" PHP_TARGETS="php5-3" PYTHON_TARGETS="python3_2 python2_7" RUBY_TARGETS="ruby19" USERLAND="GNU" VIDEO_CARDS="nvidia" XFCE_PLUGINS="brightness logout menu trash" 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: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON ================================================================= Package Settings ================================================================= xfce-base/xfce4-session-4.10.0 was built with the following: USE="consolekit gnome-keyring (multilib) policykit xscreensaver -debug -udev" CFLAGS="-O3 -fno-strict-aliasing -march=core2 -mcx16 -mpopcnt -msahf -msse4 -pipe" CXXFLAGS="-O3 -fno-strict-aliasing -march=core2 -mcx16 -mpopcnt -msahf -msse4 -pipe"
You don't need sys-power/upower for 'reboot' or 'power off'. A simple active ConsoleKit session will do. As in, ck-list-sessions ran as normal user within X11 Terminal should print 'active = TRUE' if you are a local user on the machine. Seems you are looking for the forums instead of bugzilla to be capable of filing a bug report: http://forums.gentoo.org/viewtopic-t-858965-start-0.html (and there is a lot more in forums, wiki's, etc.)
