In a system with kernel 3.7.9 and udev-171-r10, uncomment this line in /etc/conf.d/udev: udev_debug="YES" , to get debugging output in /run/udev/udev.log. Reboot the system. /run/udev/udev.log contains only ~55 lines looking like this in their entirety: 1361736665.547175 [1761] parse_file: reading '/lib/udev/rules.d/10-dm.rules' as rules file 1361736665.547289 [1761] parse_file: reading '/run/udev/rules.d/10-root-link.rules' as rules file [ .... ] 1361736665.553901 [1761] parse_file: reading '/lib/udev/rules.d/95-upower-wup.rules' as rules file 1361736665.553924 [1761] parse_file: reading '/lib/udev/rules.d/97-bluetooth-hid2hci.rules' as rules file 1361736665.553971 [1761] udev_rules_new: rules use 108624 bytes tokens (9052 * 12 bytes), 31856 bytes buffer 1361736665.553977 [1761] udev_rules_new: temporary index used 48860 bytes (2443 * 20 bytes) 1361736665.554010 [1761] main: error creating epoll fd: Function not implemented It seems udev has decided to abort. As a result, the devices in /dev are left usable only by root. The same udev-171-r10 works fine with kernel 3.6.11.
Please post your `emerge --info sys-fs/udev' output in a comment.
Portage 2.1.11.50 (default/linux/amd64/13.0/desktop/gnome, gcc-4.5.4, glibc-2.15-r3, 3.6.11-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-3.6.11-gentoo-x86_64-AMD_Athlon-tm-_II_X4_620_Processor-with-gentoo-2.1 KiB Mem: 4045916 total, 3264912 free KiB Swap: 20980880 total, 20980880 free Timestamp of tree: Wed, 27 Feb 2013 20:00:01 +0000 ld GNU ld (GNU Binutils) 2.22 app-shells/bash: 4.2_p37 dev-lang/python: 2.7.3-r2, 3.1.4-r3, 3.2.3 dev-util/cmake: 2.8.9 dev-util/pkgconfig: 0.28 sys-apps/baselayout: 2.1-r1 sys-apps/openrc: 0.11.8 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.9.6-r3, 1.10.3, 1.11.6 sys-devel/binutils: 2.22-r1 sys-devel/gcc: 4.4.5, 4.5.4, 4.6.3 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.6 (virtual/os-headers) sys-libs/glibc: 2.15-r3 Repositories: gentoo ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=athlon64" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /var/qmail/alias /var/qmail/control" CONFIG_PROTECT_MASK="${EPREFIX}/etc/gconf /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="-O2 -pipe -march=athlon64" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="ftp://ftp.uni-erlangen.de/pub/mirrors/gentoo " LANG="en_GB.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j5" 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="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 bash-completion berkdb bluetooth branding bzip2 cairo cdda cddb cdr cli colord consolekit cracklib crypt cups cxx dbus device-mapper dri dts dvd dvdr eds emacs emboss encode evo exif fam ffmpeg firefox flac fortran gdbm gdu gif gnome gnome-keyring gnome-online-accounts gpm gstreamer gtk iconv ipv6 jpeg lame lcms ldap libnotify lock lsa mad mmx mng modules mp3 mp4 mpeg mudflap multilib nautilus ncurses nls nptl ogg opengl openmp pam pango pcre pdf perl png policykit ppds pulseaudio python qt3support readline sdl session socialweb spell sqlite sse sse1 sse2 ssl startup-notification svg tcpd thunar tiff truetype udev udisks unicode upower usb vorbis wxwidgets x264 xcb xml xv xvid zlib" 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" 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" 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" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" RUBY_TARGETS="ruby18 ruby19" SANE_BACKENDS="plustek" USERLAND="GNU" VIDEO_CARDS="radeonhd radeon" 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 ================================================================= sys-fs/udev-171-r10 was built with the following: USE="gudev hwdb introspection keymap (multilib) rule_generator -action_modeswitch -build -debug -edd (-extras) -floppy (-selinux) -test"
Current stable is 197-r8, we have no plans on backporting to 171 anymore.
If this is not about too new kernel for too old udev, this could be about missing EPOLL=y in the kernel .config Let us know if there are problems with >=sys-fs/udev-197-r8 And let us know if udev's ebuild need check for EPOLL kernel .config option
Hi, yes, my 3.7.9 kernel .config was indeed lacking CONFIG_EPOLL=y. As soon as I rebuilt the kernel with that option enabled, udev started working properly. That is, udev-197-r8 - I didn't get to test the rebuilt kernel with 171-r10. I think it would be helpful to check for CONFIG_EPOLL=y in udev's ebuild, though that probably wouldn't have helped me much. The kernel's help text for EPOLL isn't actually as helpful as it might be. Sorry for the mistaken bug report, and thanks for helping me fix it.
(In reply to comment #5) > I think it would be helpful to check for CONFIG_EPOLL=y in udev's ebuild, > though that probably wouldn't have helped me much. The kernel's help text > for EPOLL isn't actually as helpful as it might be. It would probably be best to follow the defaults for options behind CONFIG_EXPERT, unless you actually happen to be an expert on kernel options.
i've added same check to dbus a while back. added now to udev too -- checked sources and epoll is used everywhere
