My /var/log/Xorg.0.log includes the line (II) Initializing built-in extension XINERAMA even though I have USE=-xinerama set in /etc/make.conf. This happened with earlier versions as well, though I didn't think to look for it until now. $ emerge --info Portage 2.1_pre5-r1 (default-linux/amd64/2005.1, gcc-3.4.5, glibc-2.3.6-r3, 2.6.15-gentoo-r5 x86_64) ================================================================= System uname: 2.6.15-gentoo-r5 x86_64 AMD Opteron(tm) Processor 246 Gentoo Base System version 1.12.0_pre16 ccache version 2.4 [enabled] dev-lang/python: 2.3.5-r2, 2.4.2-r1 sys-apps/sandbox: 1.2.17 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1 sys-devel/binutils: 2.16.1-r1 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r3 ACCEPT_KEYWORDS="amd64 ~amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=opteron -mtune=opteron -fomit-frame-pointer -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/kde/3/share/config /usr/share/X11/xkb /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/X11/xdm/Xservers /etc/fonts /etc/gconf /etc/rc.d /etc/rsync /etc/terminfo /etc/wget /etc/env.d" CXXFLAGS="-O2 -march=opteron -mtune=opteron -fomit-frame-pointer -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig ccache distlocks sandbox sfperms strict userpriv usersandbox" GENTOO_MIRRORS="http://gentoo.blueyonder.co.uk http://ftp.easynet.nl/mirror/gentoo http://trumpetti.atm.tut.fi/gentoo/ ftp://sunsite.informatik.rwth-aachen.de/pub/Linux/gentoo http://ftp.uni-erlangen.de/pub/mirrors/gentoo http://distfiles.gentoo.org http://www.ibiblio.org/pub/Linux/distributions/gentoo" LANG="en_GB.ISO-8859-15" LC_ALL="en_GB.ISO-8859-15" LINGUAS="en_GB" MAKEOPTS="-j5" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://gaia.home/gentoo-portage" USE="amd64 X alsa arts avi bash-completion berkdb bitmap-fonts bzip2 cairo cdr crypt cups directfb dri dvd eds emboss encode fbcon foomaticdb fortran gif gimp gimpprint gphoto2 gpm gstreamer gtk gtk2 hal imlib ipv6 ithreads javascript jpeg kde kdeenablefinal libcaca lzw lzw-tiff mp3 mpeg ncurses nls nptl nsplugin nvidia ogg opengl pam pdflib perl png ppds python qt quicktime readline scanner sdl sox spell ssl tcpd tiff truetype truetype-fonts type1-fonts unicode usb userlocales vorbis wmf xpm xv zlib elibc_glibc input_devices_keyboard input_devices_mouse kernel_linux linguas_en_GB userland_GNU video_cards_nv" Unset: ASFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, LDFLAGS
That's because xorg-server doesn't have a xinerama USE flag, and I have no interest in adding one for a couple of reasons. Some core X packages break if built without xinerama, and if someone wants to enable it later, it's not clear that they would need to rebuild xorg-server to get other programs working properly. It's also not well-tested by the upstream developers to avoid building such core options.
Ok, fair enough. It just seemed odd behaviour, that's all. No problem.
*** Bug 152280 has been marked as a duplicate of this bug. ***