After successful emerging nvidia-drivers, the driver nvidia.ko doesn't load with the error: FATAL: Error inserting nvidia (/lib/modules/2.6.31-gentoo-r2/video/nvidia.ko): Invalid module format My /usr/src/linux is pointing to the correct directory. The problem is found by looking into dmesg which states Module.symvers is missing. Which means one of two things. Either nvidia-drivers shouldn't emerge successfully (and there should be a check there in the kernel sources which was forgotten) or if it emerges successfully, the driver should load successfully, right?
Portage 2.1.7.3 (default/linux/amd64/10.0/desktop, gcc-4.3.2, glibc-2.10.1-r0, 2.6.31-gentoo-r2 x86_64) ================================================================= System uname: Linux-2.6.31-gentoo-r2-x86_64-Intel-R-_Pentium-R-_D_CPU_3.40GHz-with-gentoo-2.0.1 Timestamp of tree: Mon, 02 Nov 2009 13:15:01 +0000 app-shells/bash: 4.0_p35 dev-java/java-config: 2.1.9-r1 dev-lang/python: 2.6.4, 3.1.1-r1 dev-util/cmake: 2.6.4-r3 sys-apps/baselayout: 2.0.1 sys-apps/openrc: 0.5.2-r1 sys-apps/sandbox: 2.2 sys-devel/autoconf: 2.13, 2.63-r1 sys-devel/automake: 1.9.6-r2, 1.10.2, 1.11 sys-devel/binutils: 2.20 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6a virtual/os-headers: 2.6.30-r1 ACCEPT_KEYWORDS="amd64 ~amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/fax /usr/share/X11/xkb /var/lib/hsqldb /var/spool/fax/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /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 /etc/udev/rules.d" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch" GENTOO_MIRRORS="http://mirror.bytemark.co.uk/gentoo/ ftp://mirror.bytemark.co.uk/gentoo/ http://www.mirrorservice.org/sites/www.ibiblio.org/gentoo/ ftp://ftp.mirrorservice.org/sites/www.ibiblio.org/gentoo/ http://mirror.qubenet.net/mirror/gentoo/ ftp://mirror.qubenet.net/mirror/gentoo/ http://gentoo.virginmedia.com/ ftp://gentoo.virginmedia.com/sites/gentoo " LDFLAGS="-Wl,-O1" LINGUAS="en pt de" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="64bit X a52 aac acl acpi addressbook alsa amd64 applet auctex autotrace avahi bash-completion berkdb bluetooth branding bzip2 cairo capi caps cdda cddb cdr cdrom chipcard cleartype cli consolekit context cracklib crypt css csv cups cupsddk curl daap dbus deskbar detex disk-partition djvu dri dts dvb dvd dvdr dvi2tty dvipdfm ebook ecsteve ecsteve2 eds elf elisp emacs emacs22icons emboss encode evo exif expat extra extra-algorithms extras extratools faac faad fam fat fax ffmpeg fftw firefox firefox3 flac flash flickr fltk fontconfig fontforge foomatic foomaticdb fortran fuse games gconf gdbm ggi gif gimp gmp gnome gnutls gpm graphics graphviz gs gsf gstreamer gtk guile h323 hal hbci humanities iconv int64 ipv6 jadetex java java6 javascript jpeg jpeg2k karma kdrive kpathsea lame latex latex3 ldap libffi libnotify libssh2 lua mad md5sum mikmod mmx modules mono mp3 mp4 mpeg mpi mtp mudflap multilib music mysql nautilus ncurses networking nls nptl nptlonly nsplugin ntfs odk ofx ogg omega opengl openmp pam pango pcre pdf perl plotutils png ppds pppd preview-latex pstricks publishers python qt3 qt3support qt4 quicktime quotes readline reflection reiser4 reiserfs scanner science sdl server session sip smp sourceview speex spell spl sqlite sqlite3 srtp sse sse2 ssl startup-notification stats subversion svg swig sysfs taglib tcl tcpd templates tex tex4ht theora thunar tiff tk toolkit-scroll-bars tracker truetype type3 unicode usb vorbis wav webkit wifi wmf wxwidgets x264 xft xml xmp xorg xulrunner 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="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 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" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en pt de" USERLAND="GNU" VIDEO_CARDS="vesa nvidia fbdev" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Please attach the relevant lines from dmesg, something like; dmesg | tail -n 50 > dmesg-nvidia.txt also attach the results after running nvidia-bug-report.sh
Invalid module format from insmod can only happen in a few scenarios. You're kernel magic didn't match (i.e. you changed options between your running kernel and your kernel sources, you used a different compiler). You're kernel sources aren't pointing to your running kernel so the module was built against a different kernel. David summed up exactly what information we need, please attach and re-open the issue.
Rebuilding the kernel to generate Module.symvers and then emerging nvidia-drivers worked.
