Since I upgraded to Yosemite I have to power off my iMac before I can put my password in and logon. When I try to log into my iMac after it's been asleep, I have no mouse or trackpad control and the box to put my password in is not displayed. I have tried keyboard combinations and get no response from the keyboard as well. I now have to reach around, power it off and then power it back on to get logged in.
I have a late 2012 iMac
3.4 ghz i7 24gb RAM
NVIDIA GeForce GTX 680MX 2048 MB
3 TB Fusion drive
I have a late 2012 iMac
3.4 ghz i7 24gb RAM
NVIDIA GeForce GTX 680MX 2048 MB
3 TB Fusion drive