Safe sleep / hibernate problem with 13" MBP (non-retina)
Hi All,
I just purchased a new 13" MBP and I'm having an issue with resuming from safe sleep / hibernation. Here's the sequence of events that I'm seeing:
- Shut lid of computer at night. The computer is plugged in.
- The unit remains in sleep mode until sometime the next day (plugged in the entire time)
- Lift lid to wakeup (still plugged in)
- Instead of waking up, I get the greyed-out screen with the white status bar dots at the bottom. This takes ~10-15 seconds.
- After the status bar goes away, the trackpad and keyboard remain unresponsive for another 10-15 seconds.
- Finally, the machine is responsive.
So, this is really annoying. On my old MBP, the status bar would only show up if I left the machine in sleep mode on battery power for several days.
As far as I can tell, this machine uses "safe sleep" mode. Meaning that when it goes to sleep, it writes the contents of the RAM to the hard drive. If power is lost during sleep and the battery is drained, it can power down the RAM and resume from the hard drive, which takes a long time, but preserves whatever information was in the RAM. However, my machine is doing this after any long sleep period even when plugged in. It wakes up normally if it is only shut for a few seconds or minutes.
Any ideas? I called apple support, and the tech said this was normal for it to take ~30 seconds to be responsive after opening the lid (he was also extremely rude and didn't seem to understand safe sleep mode at all). My 8 year old MBP takes about 4 seconds, so I know he's wrong, or I'm taking this thing back.
I've found instructions to disable safe sleep, but that seems possibly risky. And I shouldn't need to do that. Any ideas?
Also, I looked in Console, here's a line at the time I opening my machine:
11/29/12 9:05:57.000 PM kernel[0]: hibernate_machine_init pagesDone 1020470 sum2 1455f1eb, time: 13864 ms, comp bytes: 2451988480 time: 2228 ms 1049 Mb/s, crypt bytes: 1412289024 time: 535 ms 2516 Mb/s
As I'm reading this, it took ~14 seconds to read the hibernate file.....? That sounds about right.
MacBook Pro, OS X Mountain Lion (10.8.2)
