With version 3.5.0-19 everything is fine (however, ACPI conflicts listed above are also present).
With version 3.5.0-20 I get messages related to debugfs for i915:
Could not create debugfs 'i915_reg_rw' directory
Could not create debugfs 'i915_flip_complete' directory
Could not create debugfs 'i915_flip_request' directory
[...]
Error: Driver 'i915' is already registered, aborting...
Then I get the kernel oops.
BUG: unable to handle kernel paging request at ffffffffa026ef08
Same problem here with Thinkpad T410s.
With version 3.5.0-19 everything is fine (however, ACPI conflicts listed above are also present).
With version 3.5.0-20 I get messages related to debugfs for i915: complete' directory
Could not create debugfs 'i915_reg_rw' directory
Could not create debugfs 'i915_flip_
Could not create debugfs 'i915_flip_request' directory
[...]
Error: Driver 'i915' is already registered, aborting...
Then I get the kernel oops.
BUG: unable to handle kernel paging request at ffffffffa026ef08