erratic wakeup from sleep after 10.9.2 - 2012 Mac Pro

Do both a pram and SMC reset

Same here, nothing else to do than rebooting by keeping power button for 5 seconds.

From www.xlr8yourmac.com with this reader feedback reports on 10.9.2 - might be something in here.

I'm running 10.9.2 Mac Pro connecting a Sharp PN-K321at 60 Hz and an old 19 inch Cinema display on the HDMI port. I'm having similar issues when waking from sleep and "erratic" is definitely the right word. My understanding is that Apple divides the PN-K321 (3840 x 2160) into two segements of 1920 x 2160. I can see this when I wake from sleep as each half of the screen seems to "wake up" maybe 50 milliseconds apart.

Waking from sleep worked almost always prior the last Mavericks update. Now, >50% of the time I get:

- blank main display, reboot required

- one half of the display blank, reboot required

- display comes up but there is a black vertical line down the middle of the screen, reboot required

The Cinema on HDMI always comes up fine.

make sure you do not have 'put hard disks to sleep when possible ' checked in Energy Saver. I have a new Mac Pro and have noticed same trouble. Apparently all SSD drives from all manufacturers can be very unpredictable and can freeze if you put them to sleep .

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If you have the Mac Pro (late 2013), Check for these INSTALLED versions:

EFI (Boot ROM) firmware update, an SMC firmware Update, and a 10.9.2 Update:

Mac OS X Mavericks 10.9.2 Update (combo)

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My 2010 Hexacore has the same issue. It not longer reliably awakes from sleep like it use to.

I have to hold down the power button.

holding power button is basically a hard restart and can be unsafe to the catalogue directory of where files are stored.

Tried cloning and erasing a new drive?

2010 21" iMac, right after installing 10.9.2 ocasionally won't wake up after sleep. It's on (you can notice heat, and mouse light is on) but the screen remains black adn it won't answer to mouse or keyboard. Needs a long power button press to restart.

I have the same issue. I have an early 2009 MAC Pro 4,1 2.66 with the same exact issues since 10.9.0 came out. I have sleep shut off and still the Mail app reports errant connections via the internet. Sometime Safari can't connect. I replaced my old time capsule I am now using the new 3GB Time Capsule and there is no change in the errant network connections. Has anyone had Safari report the network is offline and then check the internet with another browser and the newtwork is just, but Safari and Mail are reporting it offline?

I found that if I click on the network icon in system preferences this seems to repairs the condition with Safari and Mail for an hour or so. Then it is back to the same trouble with the apps reporting no network connection.

I have an SSD and sleep fails every time. I wonder how many of us have SSDs and maybe this is affecting network issues too?

We are seeing this issue as well after update to 10.9.2 on MacBook Pro. Allows user to type in their password, but then seems not to be able to log in. Pressing any key on the keyboard results in "bonk". Briefly pressing power button clears the hang and allows user to re-enter password, but then same thing happens all over again. As noted, this doesn't happen every time, but only one time is enough to be really annoying, especially if you have open files or unsaved work.

Very frustrating!!!