My wired mac keyboard is acting weird. Some keys perform weird extra insertions. The problem introduced itself when I relogged in after sleep mode and persists since then. The internal MacBook keyboard is not affected. I suspect some corrupted driver settings/files.
I tried the following already, without change:
- login with a different user
- restarting the mac
- dis-/reconnecting the keyboard
Some of the extra insertions happening:
- u => u[
- 7 => 7-
- return => creates a new line and an *
- m => m and a space character
- j => j'
- right arrow => performs a return
I am on OS X 10.9.5
Edit: I plugged the keyboard into a Windows machine, same problem. So it's a hardware issue … or is it? Is it possible that the keyboard firmware is somehow corrupt? Since many keys are acting strange and not ONE key that's broken.
Can I reset the keyboard firmware?
Best Answer
I ended up carefully removing all the key caps (like shown here http://www.youtube.com/watch?v=G_Cue2IlXIg) and cleaning up the dust/dirt that accumulated over the past two years. I guess it messed with the electronic contacts.