Hi,
I have talked with Apple Support about this and they elevated it to the engineers, but I haven't heard back for 3 weeks now so thought I would come here with it.
I am getting crashes. What happens is the system will suddenly flicker and show the login screen. When I log in, any unsaved changes are lost. Thankfully I am good about saving (or use programs where saving is obsolete), so this isn't a major deal, but it is annoying.
It seems like a similar problem is happening in Macbook Pros she the graphics card is switching and that got me to thinking. Could my two video cards be causing this? Has anyone on a Mac Pro had something similar happen to them> I know I can always pull one of the video cards and see if the problem goes away, but it is very intermittent and sometimes doesn't happen for a week or so, and I can't see a pattern to try and trigger it.
Also I was wondering if there is any performance gain in OS x 10.7.2 with having two video cards (to drive two monitors). I just put in two because I had the second one already when I bought the computer.
Thanks for any thoughts. System and crash info below.
I have talked with Apple Support about this and they elevated it to the engineers, but I haven't heard back for 3 weeks now so thought I would come here with it.
I am getting crashes. What happens is the system will suddenly flicker and show the login screen. When I log in, any unsaved changes are lost. Thankfully I am good about saving (or use programs where saving is obsolete), so this isn't a major deal, but it is annoying.
It seems like a similar problem is happening in Macbook Pros she the graphics card is switching and that got me to thinking. Could my two video cards be causing this? Has anyone on a Mac Pro had something similar happen to them> I know I can always pull one of the video cards and see if the problem goes away, but it is very intermittent and sometimes doesn't happen for a week or so, and I can't see a pattern to try and trigger it.
Also I was wondering if there is any performance gain in OS x 10.7.2 with having two video cards (to drive two monitors). I just put in two because I had the second one already when I bought the computer.
Thanks for any thoughts. System and crash info below.
Code:
Process: WindowServer [176]
Path: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/WindowServer
Identifier: WindowServer
Version: ??? (???)
Code Type: X86-64 (Native)
Parent Process: launchd [1]
Date/Time: 2011-12-20 17:33:14.434 -0700
OS Version: Mac OS X 10.7.2 (11C74)
Report Version: 9
Anonymous UUID: E662F37F-81A4-4B57-B862-97855A29D57C
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00007fe7bb107498
VM Regions Near 0x7fe7bb107498:
MALLOC_TINY 00007fd7be800000-00007fd7bed00000 [ 5120K] rw-/rwx SM=PRV
-->
STACK GUARD 00007fff5e251000-00007fff61a51000 [ 56.0M] ---/rwx SM=NUL stack guard for thread 0
Application Specific Information:
objc[176]: garbage collection is OFF
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.CoreGraphics 0x00007fff8906848d magazine_dealloc + 30
1 com.apple.CoreGraphics 0x00007fff890683ab regionFinalize + 23
2 com.apple.CoreFoundation 0x00007fff88788256 CFRelease + 502
3 com.apple.CoreGraphics 0x00007fff89067226 CGSReleaseRegion + 77
4 com.apple.CoreGraphics 0x00007fff89080a4d opaqueShapeAboveForWindow + 397
5 com.apple.CoreGraphics 0x00007fff89094963 CGXGetScreenVisibleContentShapeForWindow + 59
6 com.apple.CoreGraphics 0x00007fff891214e3 _CGXInvalidateWindowRegion + 53
7 com.apple.CoreGraphics 0x00007fff8911b741 CGXFlushWindowList + 599
8 com.apple.CoreGraphics 0x00007fff8911b4e3 CGXFlushWindow + 33
9 com.apple.CoreGraphics 0x00007fff8911b467 _CGXFlushRegionInline + 188
10 com.apple.CoreGraphics 0x00007fff8911b35a _XFlushRegionInline + 190
11 com.apple.CoreGraphics 0x00007fff8909a9e9 CGXServices_server + 148
12 com.apple.CoreGraphics 0x00007fff8909a944 __connectionHandler_block_invoke_1 + 20
13 com.apple.CoreGraphics 0x00007fff89097374 CGSHandleMessage + 149
14 com.apple.CoreGraphics 0x00007fff8909a8ed connectionHandler + 137
15 com.apple.CoreGraphics 0x00007fff8908fed1 CGXPostPortData + 162
16 com.apple.CoreGraphics 0x00007fff8908fd02 CGXRunOneServerPass + 498
17 com.apple.CoreGraphics 0x00007fff8908d757 CGXRunOneServicesPass + 423
18 com.apple.CoreGraphics 0x00007fff89096f4f CGXServerLoop + 165
19 com.apple.CoreGraphics 0x00007fff8944174e CGXServer + 1069
20 WindowServer 0x0000000102651f31 main + 9
21 WindowServer 0x0000000102651f20 start + 52
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