Do you still get the oops if you remove /lib/modules/3.5.0-20-generic/kernel/ubuntu/i915/i915_hsw.ko (or move it outside of /lib/modules/...)?
Do you still get the oops if you remove /lib/modules/ 3.5.0-20- generic/ kernel/ ubuntu/ i915/i915_ hsw.ko (or move it outside of /lib/modules/...)?