startx (EE) :AIGLX error: dlopen of /usr/lib64/dri/i965_dri.so failed.....

mels

[    47.608] (EE) AIGLX error: dlopen of /usr/lib64/dri/i965_dri.so failed (/usr/lib64/dri/i965_dri.so: cannot open shared object file: No such file or directory)
[    47.608] (EE) AIGLX: reverting to software rendering
[    47.608] (EE) AIGLX error: dlopen of /usr/lib64/dri/swrast_dri.so failed (/usr/lib64/dri/swrast_dri.so: cannot open shared object file: No such file or directory)
[    47.608] (EE) GLX: could not load software renderer

查了下，/usr/lib64/里根本就没有 dri 的目录，网上有类似的解决方法是重编译 mesa，我试了，还是不行，哪位兄弟帮忙解决下，thx。

附件为 Xorg.log、make.conf、emerge --info、lspci

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