如何将整个系统从~x86 downgrade 到 x86？

kingway

我将 ACCEPT_KEYWORDS="x86 ~x86" 改成 ACCEPT_KEYWORDS="x86"，接着 emerge -auDv world， 提示
[PHP]These are the packages that would be merged, in order:

Calculating dependencies... done!

Total: 0 packages, Size of downloads: 0 kB

Nothing to merge; would you like to auto-clean packages? [Yes/No]
>>> Auto-cleaning packages...

>>> No outdated packages were found on your system.[/PHP]

但是我单独 emerge 某个包时会是将这个包 downgrade 到 x86 版本。

emerge --info 输出如下
[PHP]kingway-gentoo ~ # emerge --info
Portage 2.1.5_rc3 (default/linux/x86/2008.0, gcc-4.2.3, glibc-2.7-r2, 2.6.24-gentoo-r3 i686)
=================================================================
System uname: 2.6.24-gentoo-r3 i686 Intel(R) Pentium(R) 4 CPU 3.00GHz
Timestamp of tree: Mon, 14 Apr 2008 01:45:01 +0000
distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled]
ccache version 2.4 [enabled]
app-shells/bash:     3.2_p33
dev-java/java-config: 1.3.7, 2.1.5
dev-lang/python:     2.5.1-r5
dev-util/ccache:     2.4-r7
sys-apps/baselayout: 1.12.12
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.13, 2.62
sys-devel/automake:  1.4_p6, 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1
sys-devel/binutils:  2.18-r1
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool:   1.5.26
virtual/os-headers:  2.6.24
ACCEPT_KEYWORDS="x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/splash /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer"
DISTDIR="/home/portage/distfiles"
FEATURES="ccache collision-protect distlocks metadata-transfer parallel-fetch sandbox sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo"
LANG="zh_CN.UTF-8"
LDFLAGS="-Wl,-O1"
LINGUAS="zh_CN"
MAKEOPTS="-j3"
PKGDIR="/home/portage/packages"
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="/home/portage"
PORTDIR_OVERLAY="/home/layman/xeffects /home/layman/gentoo-china /home/overlay"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X aac acl acpi aiglx alsa automount bash-completion berkdb bzip2 cairo chardet cjk cli compress cracklib crypt cscope cups dbus directfb dri effects fam fbcon ffmpeg firefox flac foomaticdb fortran gdbm gif gpm gtk gtk2 i8x0 iconv imagemagick imlib isdnlog java javascript jpeg ldap libnotify mad midi mime mmap mmx mozsvg mp3 mpeg mplayer mudflap ncurses nls nptlonly oci8-instant-client ogg openal opengl openmp oracle pam pcre perl png pppd python qq quicktime rar readline real reflection rplay samba session snmp spl sse sse2 ssl stroke svg svga swat symlink tcpd toolkit-scroll-bars truetype unicode vorbis win32codecs wma x86 xcomposite xft xml xorg xv zip zlib" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter 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" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="zh_CN" USERLAND="GNU" VIDEO_CARDS="i810 vesa fbdev"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS[/PHP]

我如何才能一次过将所有 ~x86 的包emerge 成 x86 的？

BTW: 最近用firefox浏览网页经常会出现花屏，导致 x 死掉的现象。我就想着将系统降级到 x86，希望不会再出现这种情况。。。。。。。

zhllg

先试试降X相关组件
xorg-server，mesa，显卡驱动等等。。

kingway

先试试看，谢了。。。。。。。