I use merged framebuffer (mMrgedFB) with the RADEON driver, but it stop working after upgrading from x11-drivers/xf86-video-ati-6.6.3 to x11-drivers/xf86-video-ati-6.12.1-r1. X11 works fine, but it clones the monitors, instead of giving me the big desktop it did before. I also tried with x11-drivers/xf86-video-ati-6.8.0-r1, but withot succes. Reproducible: Always Steps to Reproduce: upgrade x11-drivers/xf86-video-ati-6.6.3 to any newer release. Actual Results: MergedFB does not work, instead it gives a clone display on the 2 monitors. Expected Results: MergedFB should give one big Desktop on the 2 monitors. emerge --info Portage 2.1.6.7 (default/linux/amd64/2008.0/desktop, gcc-4.3.2, glibc-2.8_p20080602-r1, 2.6.27-gentoo-r8 x86_64) ================================================================= System uname: Linux-2.6.27-gentoo-r8-x86_64-AMD_Athlon-tm-_64_Processor_4000+-with-glibc2.2.5 Timestamp of tree: Tue, 07 Apr 2009 11:45:01 +0000 app-shells/bash: 3.2_p39 dev-java/java-config: 1.3.7-r1, 2.1.7 dev-lang/python: 2.5.2-r7 sys-apps/baselayout: 1.12.11.1 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.13, 2.63 sys-devel/automake: 1.5, 1.7.9-r1, 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.18-r3 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.26 virtual/os-headers: 2.6.27-r2 ACCEPT_KEYWORDS="amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O3 -pipe -march=athlon64" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/udev/rules.d" CXXFLAGS="-O3 -pipe -march=athlon64" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch userpriv" GENTOO_MIRRORS="ftp://mirror.icis.pcz.pl/gentoo/ ftp://mirror.ovh.net/gentoo-distfiles/ ftp://ftp.snt.utwente.nl/pub/os/linux/gentoo ftp://ftp.romnet.org/gentoo/ ftp://mirror.bih.net.ba/gentoo/ ftp://ftp.nyx.hu/gentoo ftp://gentoo.virginmedia.com/sites/gentoo ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo ftp://mirror.muntinternet.net/pub/gentoo/ ftp://ftp.join.uni-muenster.de/pub/linux/distributions/gentoo ftp://ftp.uni-erlangen.de/pub/mirrors/gentoo ftp://gentoo.po.opole.pl ftp://mirror.ing.unibo.it/gentoo/ ftp://mirror.bytemark.co.uk/gentoo/ ftp://ftp.join.uni-muenster.de/pub/linux/distributions/gentoo ftp://ftp.linux.ee/pub/gentoo/distfiles/ ftp://ftp.unina.it/pub/linux/distributions/gentoo ftp://ftp.fi.muni.cz/pub/linux/gentoo/ ftp://pandemonium.tiscali.de/pub/gentoo/ ftp://mirror.switch.ch/mirror/gentoo/ ftp://ftp.tu-clausthal.de/pub/linux/gentoo/ ftp://ftp.free.fr/mirrors/ftp.gentoo.org/ ftp://mirrors.evolva.ro/gentoo/" LANG="da_DK.utf8" LC_ALL="da_DK.utf8" LDFLAGS="-Wl,-O1" LINGUAS="da" MAKEOPTS="-j1" 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=" " SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="X acl acpi alsa amd64 berkdb bluetooth branding bzip2 cairo cdr cli cracklib crypt cups custom-optimization dbus dri dvd dvdread eds emboss encode esd evo fam firefox flac fortran gdbm gif gpm hal iconv isdnlog java jpeg kde libnotify mad mikmod mmx mp3 mpeg mudflap multilib mysql ncurses nforce2 nls nptl nptlonly nsplugin ogg opengl openmp pam pcre pdf perl pmu png ppds pppd python qt3 qt3support qt4 quicktime readline reflection sdl session speex spell spl sse sse2 ssl startup-notification svg sysfs tcl tcpd theora tiff truetype unicode usb vorbis xinerama xml xorg xscreensaver xulrunner xv 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="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="da" NETBEANS_MODULES="*" USERLAND="GNU" VIDEO_CARDS="radeon vesa" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Created attachment 187594 [details] My xorg.conf file
IIRC, upstream has dropped it, so not a bug. Now, it uses xrandr.
xf86-video-ati-6.8 and newer no longer have MergedFB support[1]. It was removed in favor of xrandr support which does the same thing, but dynamically. So please update your xorg.conf accordingly. Thanks 1 : http://lists.freedesktop.org/archives/xorg-announce/2007-May/000306.html
