Currently Being ModeratedAug 9, 2012 7:12 AM (in response to JBnDFW)
Reboot into the Apple Hardware Test and run an extended test to see if that pinpoints any memory issues.
Just to cover all bases, the RAM you installed was Mac-specific or just generic? Macs in general, and more so with the newer models, have always been extremely finicky to their RAM. Even the slightest deviation off their timing specs can have nasty surprises like this.
Currently Being ModeratedAug 9, 2012 7:52 AM (in response to Courcoul)
Trying to reboot to the Hardware test I just get a gray screen, let me see if I can get it working and get back to you. I did run a memory test using Rember which turned out OK.
It is Samsung RAM, I live in China and getting the right thing the first time is often not a easy task. I have gone already through several sets of memory, the first ones which I was given to try were completely wrong and the mac wouldnt even boot. Finally I got the correct 1087 which is the Samsung I am using now, but I am not certain its mac specific.
Currently Being ModeratedAug 9, 2012 8:27 AM (in response to Courcoul)
OK, I ran the quick test with results 'No problem found'. Should I run the exteneded test? Says it will take over a hour...
Thanks for your help
Currently Being ModeratedAug 9, 2012 8:30 AM (in response to JBnDFW)
Yes, the extended test focuses on stressing out the RAM to tease out any hidden bugs. Go chat with the secretary or get and enjoy some culinary delicacy while it runs...
Currently Being ModeratedAug 9, 2012 3:37 PM (in response to Courcoul)
OK, Extended test completed 1 hour and 57minutes later. Also 'No Problem found'.
Currently Being ModeratedAug 9, 2012 3:59 PM (in response to JBnDFW)
But still, the sleep issue persists, so it is a more subtle timing issue. I upgraded my MBP with a Corsair 8GB kit ( http://www.corsair.com/us/corsair-mac-memory-8gb-ddr3-sodimm-memory-kit-cmsa8gx3 m2a1333c9.html ) and it indicated it had 9-9-9-24 CAS timing. It has worked flawlessly till now. Note that my Mac is a Late 2011, whose memory runs at 1333 MHz.
As far as I can tell, the 13" Mid 2010 models used 1067 MHz memory with 7-7-7-20 CAS timing: http://www.corsair.com/us/corsair-mac-memory-8gb-dual-channel-ddr3-sodimm-memory -kit-cmsa8gx3m2a106c7.htmlMacBook Pro (15-inch Late 2011), Mac OS X (10.7.4), 2.4GHz, 8GB, Widescreen/Anti-glare
Currently Being ModeratedAug 9, 2012 8:36 PM (in response to Courcoul)
Good info, I am going back to the original 4gb and will see if I can get my hands on the proper spec RAM to see if that clears up the problem.
Currently Being ModeratedAug 16, 2012 12:39 AM (in response to Courcoul)
Well looks like I finally have the problem resolved.
I was able to get the following Micron RAM which works wonderfully.
Again, thanks for your help!
Currently Being ModeratedOct 27, 2012 9:04 AM (in response to JBnDFW)
I had the same problem and after recovery it helped me out