At 2011-12-10 10:42:03,"Claudio Roberto França Pereira" <spideybr@gmail.com> wrote:
>Yes, exactly. The first time you were missing
>CONFIG_EXTRA_FIRMWARE_DIR, it should point to /lib/firmware if you've
>emerged radeon-ucode.
>
Yes,that's right, when I checked my .config file I found that CONFIG_EXTRA_FIRMWARE_DIRis /firmware, then I corrected it and emerge xorg-server and twm.Command "X -configure" executed successfully , it did generate /root/xorg.conf.new.After that I used "X -config  /root/xorg.conf.new" , then screen turned black andOS can't response to any input.Then I "cp /root/xorg.conf.new  /etc/X11/xorg.conf" and "startx",but the result didn't change, was OS crashed?