upgrade to testing version:2.6.32-5-686

1.升级后不能进入桌面：修改/etc/X11/xorg.conf名字（备份），安装gdm3,并选择让gdm3 管理桌面
2.查看/var/log/Xorg.0.log 知道显卡类型
3.如果是ati显卡apt-get fglrx-driver fglrx-glx ;run"aticonfig --initial -f"
4.如果可以装nvidia显卡驱动，可以apt-get nvidia-glx nvidia-xconfig xserver-xorg-dev build-essential linux-headers-$(uname -r) 然后run"dpkg --reconfigure xserver-xorg ;nvidia-xconfig"

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cn99源。到上查询更新源
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deb testing main contrib non-free
deb-src testing main contrib non-free

#deb http://debian.cn99.com/debian-security/ etch/updates main contrib
#deb-src http://debian.cn99.com/debian-security/ etch/updates main contrib

deb http://security.debian.org/ testing/updates main non-free contrib
deb-src http://security.debian.org/ testing/updates main non-free contrib