我在配备 8GB RAM 的 Dell LAtitude E4310 上使用最新内核
2.6.38-10-generic #44-Ubuntu SMP Thu Jun 2 21:32:22 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
在启动时，我收到以下消息
[drm] MTRR allocation failed. Graphics performance may suffer.
确实我/proc/mtrr看起来很奇怪
reg00: base=0x000000000 ( 0MB), size= 8192MB, count=1: write-back
reg01: base=0x200000000 ( 8192MB), size= 512MB, count=1: write-back
reg02: base=0x0e0000000 ( 3584MB), size= 512MB, count=1: uncachable
reg03: base=0x0dc000000 ( 3520MB), size= 64MB, count=1: uncachable
reg04: base=0x0db400000 ( 3508MB), size= 4MB, count=1: uncachable
reg05: base=0x21c000000 ( 8640MB), size= 64MB, count=1: …