MacFixIt reader "Roger G." reports:
"The 10.5.7 upgrade (both with Combo and Delta from Safe mode) killed the ability of my white MacBook to sleep via clamshell closing. After a reboot, the system would sleep normally, but awakening the system and then sleeping would result in a system freeze. The monitor light on the case would not wax and wane in brightness but would stay on full. A few minutes later the fans would start spinning at full speed until the battery drained or the machine was rebooted."Apple Support Discussions user "smitty 195" writes:
"I am having the identical problem as everyone else (freezes on 2nd sleep attempt). I have a MacBook Pro, and upgraded to 10.5.7 yesterday."Apple Support Discussions user "Herbert Schulz" writes:
"'ve got a Macbook Pro from Autumn 2007 (model 3.1) and under 10.5.7 it all too often won't go to sleep and then won't wake up. The mouse arrow disappears and it will go to a dark screen, but is clearly not off, and seems to be saving memory to the HD but it never goes to sleep. This occurs randomly; sometimes everthing works fine."According to several reports around support forums and from e-mail correspondence from our readers, this issue appears to be related to the Ethernet settings on notebooks.
MacFixIt reader "Andreas S." reports:
"It appears that if the Ethernet is not enabled (airport only network settings) that on the MacBook Pro the sleep only works once and crashes the second time."To re-enable the Ethernet port settings:
1. Open System Preferences > NetworkNote: If you are having this issue and your Ethernet port is already enabled, try disabling it (using the gear wheel icon menu > "Make Service Inactive"). Log out or restart your Mac, then enable it. Be sure to "Apply" your changes.
2-1. If you see your Ethernet port in your list of network ports (on the left-side of the window) and it says "Inactive," activate the port by clicking the gear wheel icon and selecting "Make Service Active." Click "Apply."
2-2. If you do not see your Ethernet port in your list of network ports (on the left-side of the window), click the " " button in the bottom-left corner.
3. In the "Interface" drop-down menu, select "Ethernet."
4. Enter a name and select "Create." You should see your new Ethernet connection appear.
5. Click "Apply."
Test your MacBook or MacBook Pro by closing the clamshell. Be sure to try this twice as most reports point to the second attempt at sleep as being the culprit for the freeze. If it does not work, try resetting your Mac and test again.
Read this Apple Support Discussions forum regarding sleep issues on MacBooks and MacBook Pros caused by the Mac OS X Leopard 10.5.7 update.
Read this MacFixIt article covering different issues related to the Mac OS X Leopard 10.5.7 update.
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