Hi all!
 
	 
 
	Yesterday my e6530's mobo died... So then I got a e6420, installed successfully.
 
	Now my problem is after I leave it alone for about 10 minutes, the screen freezes. Mouse pointer works, caps lock light switches when pushing its button, hdd led shows activity.
 
	 
 
	System specs: Lat E6420, i5 2520m Intel HD3000 VGA only, 12 GB ram, bios a23, OS 10.13.6 with latest security update.
 
	 
 
	Attached my debug log.
 
debug_5415.zip