[arch-general] i915 Module Problem

Dear All, Sorry for the spam. I am new to this list and I'm fairly new to Arch Linux. I encountered a problem when I tried to install and use Arch Linux 2010.05. It seems to be: if modules auto-load is set to yes or I manually set i915 to load in rc.conf, my computer will stop and chang to blank black screen. If I disable i915 the system will start without error, but only with low defination display. My computer is new lenovo Thinkpad X201, with i5-540 processor and integrated Intel HD Graphics. Here I'm wondering whether it is a i915 error, or BIOS or any problem of my computer? And can I have an alternative method to start my Arch Linux system with normal defination display? Thank you very much. Xiaochen