linux 显卡驱动

Which drivers did you install nvidia, nv or nouveau ? Which packages ... run pacman -Q and confirm which xf86-video-??? and ??nvidia??
Run lspci -vk and confirm which module has claimed the graphics card.

Generally you should avoid having nvidia nv and nouveau drivers on the same system as they conflict.

卸载驱动：

pacman -Rn xf86-video-ati

参考：http://blog.csdn.net/u011152627/article/details/18925121