As confirmed bug #487558 states there is a problem with younger x11-drivers/nvidia-drivers for which the current workaround is downgrading nvidia-drivers. x11-drivers/nvidia-drivers-331.20 shows this bug while at least x11-drivers/nvidia-drivers-325.15 works for me. Yet this version was removed from the portage tree. Can we please get it back until nvidia fixes their current driver version? Reproducible: Always # emerge --info Portage 2.2.7 (default/linux/amd64/13.0/desktop, gcc-4.7.3, glibc-2.16.0, 3.10.17-gentoo x86_64) ================================================================= System uname: Linux-3.10.17-gentoo-x86_64-Intel-R-_Core-TM-_i7-2620M_CPU_@_2.70GHz-with-gentoo-2.2 KiB Mem: 8132628 total, 845456 free KiB Swap: 8794072 total, 8785052 free Timestamp of tree: Sun, 15 Dec 2013 02:15:01 +0000 ld GNU ld (GNU Binutils) 2.23.1 app-shells/bash: 4.2_p45 dev-java/java-config: 2.1.12-r1 dev-lang/python: 2.7.5-r3, 3.3.2-r2 dev-util/cmake: 2.8.11.2 dev-util/pkgconfig: 0.28 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.12.4 sys-apps/sandbox: 2.6-r1 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.11.6, 1.12.6, 1.13.4 sys-devel/binutils: 2.23.1 sys-devel/gcc: 4.7.3-r1 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.9 (virtual/os-headers) sys-libs/glibc: 2.16.0 Repositories: gentoo kde sunrise java oss-tools x-portage Installed sets: @kdevelop ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA cadsoft AdobeFlash-11.x PUEL Oracle-BCLA-JavaSE" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe -fomit-frame-pointer -fforce-addr -ftracer" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/fax /usr/share/config /usr/share/gnupg/qualified.txt /var/lib/hsqldb /var/spool/fax/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /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=native -O2 -pipe -fomit-frame-pointer -fforce-addr -ftracer" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--quiet-build=n" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch 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://ftp.spline.inf.fu-berlin.de/mirrors/gentoo/ http://mirror.netcologne.de/gentoo/ http://gentoo.tiscali.nl/ http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/" LANG="de_DE.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j3" PKGDIR="/var/tmp/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_EXTRA_OPTS="--ignore-errors" 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" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/var/lib/layman/kde /var/lib/layman/sunrise /var/lib/layman/java /usr/local/svn-portage /usr/local/portage" SYNC="rsync://server/gentoo-portage" USE="X Xaw3d a52 aac aalib acl acpi alsa amd64 bluetooth branding bzip2 c++0x cairo cdda cdr cli consolekit cracklib crypt cups cxx dbus dga dri dts dvd dvdr emboss encode exif fam fbcon ffmpeg firefox flac gif gmp gpm gstreamer htmlhandbook iconv imlib ipv6 jpeg kde latex lcms ldap libnotify mad mikmod mmx mng modules mp3 mp4 mpeg mudflap multilib ncurses nls nptl ogg opengl openmp opus pam pango pcre pdf pgo png policykit ppds qt3support qt4 quicktime readline sdl semantic-desktop session spell sse sse2 sse3 sse4_1 ssl ssse3 startup-notification svg tcpd theora threads tiff truetype udev udisks unicode upower usb v4l vaapi vim-syntax vorbis x264 xattr xcb xcomposite xinerama xml xprint xscreensaver xv xvid zlib" ABI_X86="64" ALSA_CARDS="hda-intel" 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="braindump flow karbon kexi krita plan stage tables sheets words" CAMERAS="canon ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" 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 ublox ubx" INPUT_DEVICES="evdev joystick keyboard mouse synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer nlpsolver pdfimport" LINGUAS="de en en_US" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python3_3" PYTHON_TARGETS="python3_3 python2_7" RUBY_TARGETS="ruby19" SANE_BACKENDS="dell1600n_net net" USERLAND="GNU" VIDEO_CARDS="intel nvidia nouveau nv vesa vga" 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" USE_PYTHON="3.3 2.7" Unset: CPPFLAGS, CTARGET, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS
Seconded. 325.15 is stable and works well here whereas newer ones fail (typically with Folding@Home).
Thirded
*** This bug has been marked as a duplicate of bug 493448 ***
