I have an Asus TF600T (Vivotab RT) that came with the Asus Keyboard Dock.
I also already had the Microsoft Wedge bluetooth keyboard.
I believe the last time I used with the Wedge keyboard or the Asus Kyeboard Dock SUCCESSFULLY was when I had RT 8.0 on this device.
I have not had need to use the keyboard until the last few days. I updated my Vivotab RT to 8.1 about 6 weeks ago. Last week I took out the Asus Keyboard Dock and connected it and all the tablet would do is make clicking noises whenever I pressed any button. It would not recognize any keystrokes. I rebooted the tablet while connected to the dock and same problem. I thought maybe the Keyboard Dock needed to be charged so I did not think anything else about it and plugged it into the charger overnight to let it charge.
I have not messed with that keyboard since that night. Tonight I get to work and I had 2 hours to kill so I decided to get my Wedge Keyboard that I have used with my Android tablet with no issues and on my RT I went into Bluetooth and paired the keyboard successfully. YES, it recognized the number code I was asked to type into the keyboard. Pair was successful and it said it was paired and it installed a driver (which looks good in device manager) but now this keyboard is behaving the same way. All the tablet is doing is clicking anytime I press a key on the keyboard. It will not recognize any keys for typing or anything else. Again, I rebooted the tablet and no help.
I have a bluetooth mouse AND a bluetooth speaker which I HAVE been using successfully with my Vivotab RT for the last month and my bluetooth mouse which I have here at work is working fine on the tablet. I did go ahead and delete all the blueooth devices, turn the bluetooth off and on, reboot the tablet, re-paired the keyboard, successfully paired it.. and now it's back to just making the tablet click.
My USB dongle is at home so I cannot test a standard USB keyboard until I get home in the morning.