yosemite will not "discover" my apple wireless keyboard. i haven't seen an answer yet. is it simply a yosemite bug and we have to wait for an updated version? or is there a solution?
I have just encountered the same problem with an original version (a1255) Apple bluetooth keyboard. After changing the batteries, the keyboard started going nuts (keys repeating, some keys not working) so I removed it from the bluetooth preferences. Now I can't re-add it. It is discovered but you can't connect. Why? If you look at the console, you will see the following logged:
Code:
10/20/14 10:05:24.130 AM System Preferences[955]: Failed to connect (mPasskeyDisplay) outlet from (IOBluetoothDevicePairViewController) to (IOBluetoothPasskeyDisplay): missing setter or instance variable
OSX is failing to display the passkey field where you have to enter a code on the keyboard to get it to authenticate with the Mac. Nice one Apple!
Who knows if/when this will get fixed. Not sure if this is just the a1255 revision that is a problem or if its a problem with the later revision too. I was just about to leave to get a new keyboard at the Apple Store.
After spending like another 30m checking to see if there is a broad Bluetooth discovery and connectivity issue with 10.10 (appears that there is), I tried to pair my keyboard yet again while also displaying the console. This time I was presented with the prompt to enter a pass key. Console reports each key entered when this happens. Finally, I'm connected again and don't need to spend $70 on a new keyboard (that will likely have the same problem).
Unfortunately, I can't report a consistent fix. I seriously just spend about 2hrs looking into this. Toggling bluetooth, rebooting, taking the batteries out of the keyboard and waiting for 5-10m to pass, then trying again. WTF, right?