My classic Mac Pro eight core (5,1 flashed) running 10.13.6 and with Apple wireless keyboard and trackpad had been running fine until a few days ago, when it started failing to wake up from sleep. Just prior to my noticing this, it displayed another, possibly related, anomalous behavior upon waking up: when the cursor was moved it would snap back to its starting position as soon as it reached its target and I stopped tracking. This behavior persisted after I swapped on a USB mouse and turned off the trackpad. It seemed to clear up after I used a Wacom pen tablet that was also connected to move the cursor and restarted. After this, the machine seems to be working fine except that when it enters sleep mode it does not respond to keyboard, trackpad nor mouse. Then I need to do a hard shutdown and restart. I usually let the Mac go to sleep on its own so now can expect to go through this routine when returning to a sleeping computer. Thanks in advance for any ideas.
PS- I should mention that when I put the machine to sleep it wakes up in response to bluetooth keyboard and trackpad, as well as USB mouse. If it goes to sleep on its own it does not respond to those devices and is also unresponsive to USB mouse.
PS- I should mention that when I put the machine to sleep it wakes up in response to bluetooth keyboard and trackpad, as well as USB mouse. If it goes to sleep on its own it does not respond to those devices and is also unresponsive to USB mouse.
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