I have a Macbook Pro 2.3GHz Intel Core i5 running OSX 10.9.5. After my mac went to sleep the built-in keyboard didn't seem to be working properly. It was printing characters like: åß∂ƒ©˙∆˚¬œ∑´®†¥¨ˆøπΩ≈ç√∫˜µ≤≥, which after I checked later look like the normal keyboard characters when holding the options button. I had the options button disabled in the first place.
Things I tried:
- Keyboard viewer works the exact same way with the built-in keyboard, which makes me think that it may not be a HW issue. I pressing for example button a on the virtual keyboard and I get å.
- I activated sticky keys to make sure that the option button wasn't stuck or something. It was fine.
- I plugged a USB keyboard which works fine (phew!).
I was thinking to upgrade to Mavericks and hopefully this will solve the problem but any other ideas or suggestions will be much appreciated.