keyboard/trackpad stop working after sleep mode
After a few hours of uptime, certain keys on my keyboard stop working and I have to reboot: both command keys and the zero key. Sometimes, after the computer has been in sleep a long time, the keyboard and mouse don't respond at all. I can get the computer to wake up again by pressing the power key, but the mouse and keyboard don't respond, so I can't do anything except hard boot. This problem first appeared after the update to 10.10.1. (I'm dealing with it right now, so I'm getting the '0' through the keyboard viewer, but there's no way to access that from the password screen.)
MacBook Pro (15-inch Early 2008), OS X Yosemite (10.10.1)