Disable device wake on SMS

[exi]

Alright, so it's apparently a known issue. I just read a couple of threads from months ago in which it's mentioned that there is a known registry key to disable waking on receipt of a new text message, but the key doesn't actually work.

I am aware that S2U2 can be used to prevent accidental texting or other screen input if I receive a text in my pocket and don't feel/hear it.

Is there any way of which I'm unaware that can be used to keep the damn phone from waking up when someone texts me?