Hello, I have a Q6600 proc and flightgear alxwaus uses 100% of ONE core while the three others idle. I tried to edit the /usr/share/games/flightgear/preferences.xml file to enable multithreading-mode with the AutomaticSelection option with no result. Thx Reproducible: Always Actual Results: one core at 100% others at 0% low FPS and the game can become unusable Portage 2.1.10.44 (default/linux/amd64/10.0, gcc-4.5.3, glibc-2.13-r4, 3.2.1-gentoo-r2 x86_64) ================================================================= System uname: Linux-3.2.1-gentoo-r2-x86_64-Intel-R-_Core-TM-2_Quad_CPU_Q6600_@_2.40GHz-with-gentoo-2.0.3 Timestamp of tree: Sun, 29 Jan 2012 08:30:01 +0000 ccache version 3.1.6 [enabled] app-shells/bash: 4.1_p9 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.7.2-r3, 3.1.4-r3 dev-util/ccache: 3.1.6 dev-util/cmake: 2.8.6-r4 dev-util/pkgconfig: 0.26 sys-apps/baselayout: 2.0.3 sys-apps/openrc: 0.9.8.2 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.68 sys-devel/automake: 1.11.1 sys-devel/binutils: 2.21.1-r1 sys-devel/gcc: 4.5.3-r1 sys-devel/gcc-config: 1.4.1-r1 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r1 sys-kernel/linux-headers: 3.1 (virtual/os-headers) sys-libs/glibc: 2.13-r4 Repositories: gentoo ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=core2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /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/php/apache2-php5.3/ext-active/ /etc/php/cgi-php5.3/ext-active/ /etc/php/cli-php5.3/ext-active/ /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 -march=core2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests binpkg-logs ccache distlocks ebuild-locks fixlafiles news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="" GENTOO_MIRRORS="ftp://mirror.ovh.net/gentoo-distfiles/" LANG="fr_FR.UTF-8@euro" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="fr" MAKEOPTS="-j4" 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="" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 apache2 bash-completion berkdb bzip2 cairo cdda cddb cli consolekit cracklib crypt cups cxx dbus dcc_video declarative device-mapper dri dvd dvdr dvdrip extras ffmpefg ffmpeg flac fontconfig gd gdbm gif gpm icdr iconv joystick jpeg kde lm_sensors mad matroska mikmod mmx modules mp3 mudflap multilib musepack mysql ncurses nls nptl nptlonly nsplugin ntp ogg opengl openmp pam pcre pcsc-lite pdf pdfimport phonon php png policykit pppd qt3support qt4 readline scanner sdl semantic-desktop session smartcard sql sqlite sse sse2 sse3 ssl startup-notification svg symlink sysfs tcpd theora thumbnail truetype udev unicode usb v4l videos vim-syntax vlc vorbis webkit x264 xinerama xml xorg xv zlib" ALSA_CARDS="intel8x0" 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 auth_digest authn_anon authn_dbd 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 dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation proxy proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan 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="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="fr" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" SANE_BACKENDS="plustek" USERLAND="GNU" VIDEO_CARDS="nouveau" 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
I discovered something about this : the bug seems to be solved using the proprietary (erk!) nvidia driver and occurs using the "nouveau" reverse engineering module.
The multi-threading support that is is controlled in /usr/share/games/flightgear/preferences.xml are settings for how OSG handles multi-threading not flightgear per say. FG does some multi-threading no matter what is set in /usr/share/games/flightgear/preferences.xml but this is limted to things like background loading of scenery and aircraft. Generally these are things that don't use much CPU and teh main purpuse of this multi-threading is to prevent these things from blocking the main FG simulation loop. Since the OSG settings are dependant on video driver OpenGL support it makes some sense that this does not work with some drivers that may not have a complete OpenGL support.
I agree with you and that confirms that the problem is in the "nouveau" driver :/ This bug can be closed. I'm sad that I have to use a proprietary driver :/
