imac freezes after sleep

[macusera80]

I recently had a hard drive failure in my imac which i replaced with the the samsung drive listed below and a fresh install of snow leopard. Now i am experiencing a problem when waking my mac from sleep. about 50% of the time when it wakes it will immediately freeze which can only be resolved by a reboot. Could this be caused by this new drive being a "green" drive that conserves more energy when asleep by going into a slower state than a typical drive or is this a software issue?

imac
2 ghz
4 g ram

Hard Drive
SAMSUNG HD154UI
1.5 t

 

[stridemat]

I have heard of this problem before, try resetting PRAM and it seems to sort out the problems.

 

[cmcbridejr]

I had this exact same problem that lasted a few weeks.

As mentioned in the previous post, try resetting the pram.

It worked for me. My iMac has not "frozen" after sleep since doing this a few months ago.

Let us know if this works for you.

 

[macusera80]

Thanks for the help guys. Ill let you know if this works.

 

[iLog.Genius]

While you're at it, try doing an SMC reset as well.