I've been using KDE (QT) build of Libreoffice and suddenly came across this strange problem which also persist with GTK openoffice and even Libreoffice. It appears Libreoffice takes too much disk I/O when drawing toolbars, it takes 2 minutes to cold start OOo, and in the mean time the whole system is unusable (I can hardly move the mouse) + the kernel hangs when I doing some other I/O intensive tasks while OOo is loading, and sometimes it hangs even if I'm doing nothing. Since Base doesn't have many toolbars by default, it opens OK, but other things are just horrible. Most important fact is that all this happens when composting is enabled with Kwin. Also I've seen, this problem persists only if Kwin render method is OpenGL, if it's XRender, the problem's solved. This appears to be a Gentoo specific problem, it's to be found nowhere. Reproducible: Always Portage 2.2.0_alpha30 (default/linux/amd64/10.0/desktop/kde, gcc-4.5.2, libc-0-r0, 2.6.37.5-zen x86_64) ================================================================= System uname: Linux-2.6.37.5-zen-x86_64-AMD_Athlon-tm-_64_X2_Dual-Core_Processor_TK-55-with-gentoo-2.0.2 Timestamp of tree: Mon, 09 May 2011 15:30:01 +0000 app-shells/bash: 4.1_p9 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.6.6-r2, 2.7.1-r1, 3.1.3-r1 dev-util/cmake: 2.8.4-r1 sys-apps/baselayout: 2.0.2 sys-apps/openrc: 0.8.2-r1 sys-apps/sandbox: 2.4 sys-devel/autoconf: 2.65-r1 sys-devel/automake: 1.9.6-r3, 1.11.1 sys-devel/binutils: 2.20.1-r1 sys-devel/gcc: 4.5.2 sys-devel/gcc-config: 1.4.1-r1 sys-devel/libtool: 2.2.10 sys-devel/make: 3.81-r2 sys-kernel/linux-headers: 2.6.38 sys-libs/glibc: 2.11.3 virtual/os-headers: 0 Repositories: gentoo sunrise proaudio x11 mozilla x-dev-tree Installed sets: ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -fomit-frame-pointer -floop-interchange -floop-strip-mine -floop-block -fgraphite-identity" 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/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=native -O2 -fomit-frame-pointer -floop-interchange -floop-strip-mine -floop-block -fgraphite-identity" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--with-bdeps=n --complete-graph --binpkg-respect-use=y" FEATURES="assume-digests binpkg-logs candy distlocks fail-clean fixlafiles fixpackages news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv" FFLAGS="" GENTOO_MIRRORS="http://distfiles.gentoo.org" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j2" 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="/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/var/lib/layman/sunrise /var/lib/layman/pro-audio /var/lib/layman/x11 /var/lib/layman/mozilla /home/de/dev-tree" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="3dnow X a52 a53 aac aalib acc acpi adns alsa amd64 amr atm audiofile branding bzip2 cdr cli consolekit cracklib css cups custom-cflags custom-optimization dbus dbx dga dirac dri dts dv dvd dvdr emboss encode enscript exif ffmpeg firefox flac fortran gdu gif glut gmp gsm gstreamer gzip iconv icu imlib ipc jpeg jpeg2k kde ladspa lame lcms libedit libnotify libsamplerate libwww lzma lzo mad matroska matrox mikmod mime minimal mmap mmx mng modules mozilla mp3 mp4 mpeg mplayer mudflap multilib musepack networkmanager nntp nocd nptl nptlonly nsplugin offensive ogg openal openexr opengl openmp optimization osc pam pango pch pdf plasma png policykit posix ppds pppd qt3support qt4 quicktime raw readline schroedinger sharedmem shorten smp sndfile sockets socks5 speex spell sse sse2 startup-notification strong-optimization svg symlink sysfs taglib tcpd theora threads tiff toolame truetype twolame udev unicode usb vcd vhosts vorbis wavpack win32codecs wmf x264 xcb xine xinerama xml xorg xpm 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 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" 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 synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="radeon r300 r600" 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, INSTALL_MASK, LANG, LC_ALL, LINGUAS, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
This looks more like a problem with X11... Please attach your xorg.conf, and the Xorg.0.log! Which versions of X, KDE, and LibreOffice are you talking about?
This's a problem with GIT mesa on Radeon r300. You might like to add this warning to the ebuild.
