Q: Mountain Lion keeps logging user out...

Can everyone follow this article

http://support.apple.com/kb/TS4348

Very same issue here. Early 2008 Mac Pro, 2 graphic cards: ATI Radeon HD 2600 XT and NVIDIA GeForce GT 120.

It happened several times to me today, once when dragging an image from a browser to the desktop, 3 or 4 times when changes spaces using the control-key or by trackpad gesture. And most recently it happened when waking the monitors from sleep mode.

The console logs all seem to indicate crashes in one graphics driver or another.

Here is one example of a log after a crash:

Process:         WindowServer [11869]

Path:            /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/Resources/WindowServer

Identifier:      WindowServer

Version:         322

Code Type:       X86-64 (Native)

Parent Process:  launchd [1]

User ID:         88

Date/Time:       2012-07-26 17:48:26.359 -0700

OS Version:      Mac OS X 10.8 (12A269)

Report Version:  10

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)

Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000

VM Regions Near 0:

-->

    __TEXT                 000000010caee000-000000010caef000 [    4K] r-x/rwx SM=COW  /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/Resources/WindowServer

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread

0   libGPUSupport.dylib                     0x000000010d01d503 gldUnbindTexture + 20

1   GLEngine                                0x000000010cde655f gleUnbindTextureObject + 59

2   GLEngine                                0x000000010cdb8838 gleUnbindDeleteHashNamesAndObjects + 134

3   GLEngine                                0x000000010cc98844 glDeleteTextures_Exec + 732

4   com.apple.CoreGraphics                  0x00007fff96ab4f00 CGXGLDestroyTexture + 335

5   com.apple.CoreGraphics                  0x00007fff96c9e108 CGXBackingStoreTextureRelease + 28

6   com.apple.CoreGraphics                  0x00007fff96c9df9d CGXBackingStoreRelease + 34

7   com.apple.CoreGraphics                  0x00007fff96941144 CGXUpdateMagicMenuBar + 652

8   com.apple.CoreGraphics                  0x00007fff969de5a8 CGXUpdateDisplay + 1609

9   com.apple.CoreGraphics                  0x00007fff96942fd1 run_timer_pass + 381

10  com.apple.CoreGraphics                  0x00007fff96a6309e CGXRunOneServicesPass + 198

11  com.apple.CoreGraphics                  0x00007fff96a6385e CGXServer + 1000

12  WindowServer                            0x000000010caeef41 main + 9

13  libdyld.dylib                           0x00007fff94e617e1 start + 1

Only thing I see here is MagicMenu. Can you do without it? It is not yet listed as compatible (It is not in Lion).

Uninstal it and see what happens

Umm...Don't know what MagicMenu is. Never heard of it. Don't believe I've ever added anything like that.

BTW, here is an excerpt from another log:

Process:         WindowServer [10449]

Path:            /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/Resources/WindowServer

Identifier:      WindowServer

Version:         322

Code Type:       X86-64 (Native)

Parent Process:  launchd [1]

User ID:         88

Date/Time:       2012-07-26 17:37:13.865 -0700

OS Version:      Mac OS X 10.8 (12A269)

Report Version:  10

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_CRASH (SIGABRT)

Exception Codes: 0x0000000000000000, 0x0000000000000000

Application Specific Information:

*** error for object 0x7f9d2238b208: incorrect checksum for freed object - object was probably modified after being freed.

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread

0   libsystem_kernel.dylib                  0x00007fff949e8212 __pthread_kill + 10

1   libsystem_c.dylib                       0x00007fff8f0c2b34 pthread_kill + 90

2   libsystem_c.dylib                       0x00007fff8f106dfa abort + 143

3   libsystem_c.dylib                       0x00007fff8f0e28d5 szone_error + 580

4   libsystem_c.dylib                       0x00007fff8f0e72c2 tiny_malloc_from_free_list + 378

5   libsystem_c.dylib                       0x00007fff8f0e7b08 szone_malloc_should_clear + 971

6   libsystem_c.dylib                       0x00007fff8f0da47e malloc_zone_calloc + 79

7   libsystem_c.dylib                       0x00007fff8f0dac24 calloc + 48

8   com.apple.GeForceGLDriver               0x00000002000ddb88 0x200000000 + 908168

9   com.apple.GeForceGLDriver               0x000000020039acf0 0x200000000 + 3779824

10  com.apple.GeForceGLDriver               0x00000002000d930f 0x200000000 + 889615

11  com.apple.GeForceGLDriver               0x000000020005d20c 0x200000000 + 381452

12  com.apple.GeForceGLDriver               0x00000002000c609b 0x200000000 + 811163

13  GLEngine                                0x000000010d38dd52 gleBeginPrimitiveTCLFunc + 78

14  GLEngine                                0x000000010d2f62d2 gleDrawArraysOrElements_ExecCore + 788

15  GLEngine                                0x000000010d2ef07c glDrawRangeElements_IMM_Exec + 346

16  com.apple.QuartzCore                    0x00007fff959dcba1 CA::OGL::GLContext::draw_elements(CA::OGL::PrimitiveMode, unsigned int, unsigned short const*, CA::OGL::Vertex const*, unsigned int, unsigned int, CA::OGL::ClipPlane const*) + 379

17  com.apple.QuartzCore                    0x00007fff959dc9f0 CA::OGL::Context::array_flush() + 62

18  com.apple.QuartzCore                    0x00007fff959e75da CA::OGL::Context::ClippedArray::next_rect(CA::Bounds&) + 280

19  com.apple.QuartzCore                    0x00007fff959b35fa CA::OGL::emit_quad_indices(CA::OGL::Context&, CA::OGL::RectState const&, unsigned short const*, unsigned long, unsigned long, unsigned long) + 273

20  com.apple.QuartzCore                    0x00007fff959ba290 CA::OGL::emit_nine_part_rect(CA::OGL::Context&, CA::OGL::RectState const&, double const*, double const*, float const*, float const*, float const*, float const*, unsigned int) + 590

21  com.apple.QuartzCore                    0x00007fff959e6e6c CA::OGL::fill_rect_tex(CA::OGL::Context&, CA::OGL::RectState const&, float const*) + 744

22  com.apple.QuartzCore                    0x00007fff959e6a5a CA::OGL::ContentsGeometry::fill(CA::OGL::Context&, CA::OGL::Image*) const + 132

23  com.apple.QuartzCore                    0x00007fff959e642b CA::OGL::ContentsGeometry::fill(CA::OGL::Context&, CA::OGL::Image*, CA::OGL::TextureFilter, float) const + 101

24  com.apple.QuartzCore                    0x00007fff959e38db CA::OGL::render_contents_background(CA::OGL::Renderer&, CA::OGL::Layer const*) + 1846

25  com.apple.QuartzCore                    0x00007fff959e3025 CA::OGL::LayerNode::apply(CA::OGL::Surface**) + 57

26  com.apple.QuartzCore                    0x00007fff959e23f1 CA::OGL::ImagingNode::render(CA::OGL::ImagingNode::RenderClosure*) + 231

27  com.apple.QuartzCore                    0x00007fff959e22cf CA::OGL::render_layers(CA::OGL::Renderer&, CA::OGL::Layer*) + 117

28  com.apple.QuartzCore                    0x00007fff959e30f1 CA::OGL::LayerNode::apply(CA::OGL::Surface**) + 261

29  com.apple.QuartzCore                    0x00007fff959e23f1 CA::OGL::ImagingNode::render(CA::OGL::ImagingNode::RenderClosure*) + 231

30  com.apple.QuartzCore                    0x00007fff959e22cf CA::OGL::render_layers(CA::OGL::Renderer&, CA::OGL::Layer*) + 117

31  com.apple.QuartzCore                    0x00007fff959e30f1 CA::OGL::LayerNode::apply(CA::OGL::Surface**) + 261

32  com.apple.QuartzCore                    0x00007fff959e23f1 CA::OGL::ImagingNode::render(CA::OGL::ImagingNode::RenderClosure*) + 231

33  com.apple.QuartzCore                    0x00007fff959e22cf CA::OGL::render_layers(CA::OGL::Renderer&, CA::OGL::Layer*) + 117

34  com.apple.QuartzCore                    0x00007fff959e30f1 CA::OGL::LayerNode::apply(CA::OGL::Surface**) + 261

35  com.apple.QuartzCore                    0x00007fff959e23f1 CA::OGL::ImagingNode::render(CA::OGL::ImagingNode::RenderClosure*) + 231

36  com.apple.QuartzCore                    0x00007fff959e22cf CA::OGL::render_layers(CA::OGL::Renderer&, CA::OGL::Layer*) + 117

37  com.apple.QuartzCore                    0x00007fff959d9487 CA::OGL::Renderer::render(CA::Render::Update const*) + 875

38  com.apple.QuartzCore                    0x00007fff959d9096 CA::OGL::render(CA::OGL::Renderer&, CA::Render::Update*) + 227

39  com.apple.QuartzCore                    0x00007fff95a54d8f CARenderOGLRender + 24

40  com.apple.CoreGraphics                  0x00007fff96ac0813 _CGXGLCompositeLayer_ + 2188

41  com.apple.CoreGraphics                  0x00007fff96abff60 _CGXGLCompositeLayer + 16966

42  com.apple.CoreGraphics                  0x00007fff96abb2d1 _CGXGLCompositeLayers + 26

43  com.apple.CoreGraphics                  0x00007fff96aba975 CGXGLAccelComposite + 1499

44  com.apple.CoreGraphics                  0x00007fff968dc53d CGLayerComposite + 137

45  com.apple.CoreGraphics                  0x00007fff969dfa32 CGXUpdateDisplay + 6867

46  com.apple.CoreGraphics                  0x00007fff96942fd1 run_timer_pass + 381

47  com.apple.CoreGraphics                  0x00007fff96a6309e CGXRunOneServicesPass + 198

48  com.apple.CoreGraphics                  0x00007fff96a6385e CGXServer + 1000

49  WindowServer                            0x000000010d0adf41 main + 9

50  libdyld.dylib                           0x00007fff94e617e1 start + 1

In Lion (or maybe before you have installed it. Maybe there are still remnants in this installation: read your earlier post, last section commencing with "thread 0 crashed" line (7). Search for anything (with Easyfind or FindAnyFile) for MagicMenu...

Having the same issue on Late 2009 iMac 27. May e related to Messages app. When I login after a period of sleep I get the notification sound that Messages is online, I hear the same sound just before I get the login screen appearing.

Add me to the same list.

Early 2009 Mac Pro

Dual video cards

2x2.26 GHz Quad-Core Intel Xeon

I tried the safe mode start and looked for incompatible login items. None were designated as such.

I'm back on Lion, but will have another go tomorrow and will try safe mode and http://support.apple.com/kb/TS4348

The Apple remedy does nothing. I have no Log-In items running, and the computer will randomly do it at various times. It's usually due to me doing something - dragging a file, clicking a link, Time Machine starting up.

My system goes to perform a task, and poof - logged out. Completely random, rarely the same thing twice.

So, it could be either a GPU or CPU issue, because when the action is taken, and it hits a processor, the OS has a panic attack of sorts and just logs you out.

Apple - you guys gotta fix this. Out of all the issues I've read about regarding Mountain Lion, this one is by far the most destructive.

Interesting. Well, that's what I'm going to try tomorrow: zero migration and vanilla Mountain Lion.

And just see what happens.

I'm having the same issues too on a 2009 MacPro 4,1

I keep seeing vage flashing things on my left-hand screen that I've not seen before either. Doesn't last long enough to see what it is, but I see something pop onto the screen and then disappear.

Not a pleasant upgrade so far on this particular machine.

I have Found the Solution.

The problem is with Rowmote Helper.

I believe it interferes with the gate keeper security function of mountain lion.

What you should do is go to System preferences---> user and groups--->login items and remove ROWMOTE HELPER from there.

restart the mac and the problem should be fixed!

Having the same issue seems to only happen after sitting at the screen saver for some time.

MBP late 2011

Process:         killall [42752]

Path:            /usr/bin/killall

Identifier:      killall

Version:         170

Code Type:       X86-64 (Native)

Parent Process:  launchd [1]

User ID:         501

Date/Time:       2012-07-27 09:01:03.654 -0500

OS Version:      Mac OS X 10.8 (12A269)

Report Version:  10

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_BAD_INSTRUCTION (SIGILL)

Exception Codes: 0x0000000000000001, 0x0000000000000000

Application Specific Information:

Data corruption: Could not retain bootstrap port!

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread

0   libxpc.dylib                            0x00007fff8c5435d3 _xpc_domain_create + 222

1   libxpc.dylib                            0x00007fff8c542e72 _libxpc_initializer + 400

2   libSystem.B.dylib                       0x00007fff92abdb2d libSystem_initializer + 172

3   dyld                                    0x00007fff679ef378 ImageLoaderMachO::doModInitFunctions(ImageLoader::LinkContext const&) + 236

4   dyld                                    0x00007fff679ef762 ImageLoaderMachO::doInitialization(ImageLoader::LinkContext const&) + 46

5   dyld                                    0x00007fff679ec06e ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&) + 380

6   dyld                                    0x00007fff679ebfc4 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&) + 210

7   dyld                                    0x00007fff679ebeba ImageLoader::runInitializers(ImageLoader::LinkContext const&, ImageLoader::InitializerTimingList&) + 54

8   dyld                                    0x00007fff679ddfc0 dyld::initializeMainExecutable() + 207

9   dyld                                    0x00007fff679e1b04 dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) + 3060

10  dyld                                    0x00007fff679dd397 dyldbootstrap::start(macho_header const*, int, char const**, long, macho_header const*, unsigned long*) + 761

11  dyld                                    0x00007fff679dd05e _dyld_start + 54

Thread 0 crashed with X86 Thread State (64-bit):

  rax: 0x00007fff8c557af1  rbx: 0x00007fdf99c034a0  rcx: 0x00007fff888be61a  rdx: 0x0000000000000000

  rdi: 0x0000000000000907  rsi: 0x0000000000000507  rbp: 0x00007fff57e23030  rsp: 0x00007fff57e23020

   r8: 0x0000000000000107   r9: 0x0000000000000000  r10: 0x0000000000000001  r11: 0x0000000000000246

  r12: 0x00007fdf99c02ff0  r13: 0x0000000000000001  r14: 0x00007fff57e23d20  r15: 0x00007fff57e230e0

  rip: 0x00007fff8c5435d3  rfl: 0x0000000000010206  cr2: 0x00007fdf99c03000

Logical CPU: 2

Binary Images:

       0x107ddc000 -        0x107dddfff  killall (170) <7609C509-2A5C-3DFD-A307-EEDF7551566B> /usr/bin/killall

    0x7fff679dc000 -     0x7fff67a1093f  dyld (210.2.3) <A40597AA-5529-3337-8C09-D8A014EB1578> /usr/lib/dyld

    0x7fff86cd9000 -     0x7fff86cdaff7  libremovefile.dylib (23.1) <DBBFAF35-AC78-3856-92F6-6E4FD9DF14A2> /usr/lib/system/libremovefile.dylib

    0x7fff871f4000 -     0x7fff87218ff7  libc++abi.dylib (24.2) <340E7C7B-DC93-3AA2-B015-B1C9541EC255> /usr/lib/libc++abi.dylib

    0x7fff87282000 -     0x7fff87287fff  libcompiler_rt.dylib (30) <08F8731D-5961-39F1-AD00-4590321D24A9> /usr/lib/system/libcompiler_rt.dylib

    0x7fff874f1000 -     0x7fff8753dff7  libauto.dylib (185.1) <73CDC482-16E3-3FC7-9BB4-FBA2DA44DBC2> /usr/lib/libauto.dylib

    0x7fff87772000 -     0x7fff87773ff7  libdnsinfo.dylib (453.16) <38A3E0F4-E34C-3D45-A2C9-4CDE2DF007BD> /usr/lib/system/libdnsinfo.dylib

    0x7fff87774000 -     0x7fff87774fff  libkeymgr.dylib (25) <CC9E3394-BE16-397F-926B-E579B60EE429> /usr/lib/system/libkeymgr.dylib

    0x7fff888ae000 -     0x7fff888c9ff7  libsystem_kernel.dylib (2050.7.9) <E0447BF5-E104-35B0-B28B-4156887D58F1> /usr/lib/system/libsystem_kernel.dylib

    0x7fff8a959000 -     0x7fff8a96eff7  libdispatch.dylib (228.18) <0B6B6E7F-4D8A-3F3B-A4BF-6CF34638DBBB> /usr/lib/system/libdispatch.dylib

    0x7fff8bc1c000 -     0x7fff8bc4aff7  libsystem_m.dylib (3022.6) <B434BE5C-25AB-3EBD-BAA7-5304B34E3441> /usr/lib/system/libsystem_m.dylib

    0x7fff8c53e000 -     0x7fff8c560ff7  libxpc.dylib (140.37) <C552985C-2171-3136-A1B9-3AB21CBF7C4A> /usr/lib/system/libxpc.dylib

    0x7fff8d140000 -     0x7fff8d147fff  libcopyfile.dylib (89) <876573D0-E907-3566-A108-577EAD1B6182> /usr/lib/system/libcopyfile.dylib

    0x7fff8d1c5000 -     0x7fff8d291fef  libsystem_c.dylib (825.24) <16B6B86C-53EE-36E8-AC2B-4AADC1008098> /usr/lib/system/libsystem_c.dylib

    0x7fff8d7fd000 -     0x7fff8d803fff  libmacho.dylib (829) <BF332AD9-E89F-387E-92A4-6E1AB74BD4D9> /usr/lib/system/libmacho.dylib

    0x7fff8e74a000 -     0x7fff8e752ff7  libsystem_dnssd.dylib (379.27) <057906EA-206E-3C35-B43F-5D936FD0A84F> /usr/lib/system/libsystem_dnssd.dylib

    0x7fff8ebe2000 -     0x7fff8ebf0ff7  libsystem_network.dylib (77.10) <0D99F24E-56FE-380F-B81B-4A4C630EE587> /usr/lib/system/libsystem_network.dylib

    0x7fff8faa6000 -     0x7fff8fab1fff  libsystem_notify.dylib (98.5) <C49275CC-835A-3207-AFBA-8C01374927B6> /usr/lib/system/libsystem_notify.dylib

    0x7fff9002b000 -     0x7fff90039fff  libcommonCrypto.dylib (60026) <2D6537F5-1B5E-305C-A1CF-D1FA80CA3939> /usr/lib/system/libcommonCrypto.dylib

    0x7fff9039c000 -     0x7fff903a2ff7  libunwind.dylib (35.1) <21703D36-2DAB-3D8B-8442-EAAB23C060D3> /usr/lib/system/libunwind.dylib

    0x7fff90f79000 -     0x7fff90f7efff  libcache.dylib (57) <65187C6E-3FBF-3EB8-A1AA-389445E2984D> /usr/lib/system/libcache.dylib

    0x7fff90f7f000 -     0x7fff91097a27  libobjc.A.dylib (532) <9FA80CDA-97F4-3801-8879-0C1B976BC5CA> /usr/lib/libobjc.A.dylib

    0x7fff91548000 -     0x7fff91597ff7  libcorecrypto.dylib (106) <57BC99C6-3C3F-344C-BDD6-25E845D956F2> /usr/lib/system/libcorecrypto.dylib

    0x7fff91ac1000 -     0x7fff91ac4ff7  libdyld.dylib (210.2.3) <F59367C9-C110-382B-A695-9035A6DD387E> /usr/lib/system/libdyld.dylib

    0x7fff91e2d000 -     0x7fff91e95ff7  libc++.1.dylib (65.1) <20E31B90-19B9-3C2A-A9EB-474E08F9FE05> /usr/lib/libc++.1.dylib

    0x7fff92a83000 -     0x7fff92a84fff  libsystem_blocks.dylib (59) <D92DCBC3-541C-37BD-AADE-ACC75A0C59C8> /usr/lib/system/libsystem_blocks.dylib

    0x7fff92a85000 -     0x7fff92abbfff  libsystem_info.dylib (406.17) <4FFCA242-7F04-365F-87A6-D4EFB89503C1> /usr/lib/system/libsystem_info.dylib

    0x7fff92abc000 -     0x7fff92abdff7  libSystem.B.dylib (169.3) <365477AB-D641-389D-B8F4-A1FAE9657EEE> /usr/lib/libSystem.B.dylib

    0x7fff92b17000 -     0x7fff92b19fff  libquarantine.dylib (52) <4BE2E642-A14F-340A-B482-5BD2AEFD9C24> /usr/lib/system/libquarantine.dylib

    0x7fff92d0a000 -     0x7fff92d12fff  liblaunch.dylib (442.21) <224CB010-6CF8-3FC2-885C-6F80330321EB> /usr/lib/system/liblaunch.dylib

    0x7fff92ee6000 -     0x7fff92ee7ff7  libsystem_sandbox.dylib (220) <3C3B03CF-C525-3CB3-8557-62E91B93AC95> /usr/lib/system/libsystem_sandbox.dylib

    0x7fff92ee8000 -     0x7fff92eeaff7  libunc.dylib (25) <92805328-CD36-34FF-9436-571AB0485072> /usr/lib/system/libunc.dylib

External Modification Summary:

  Calls made by other processes targeting this process:

    task_for_pid: 0

    thread_create: 0

    thread_set_state: 0

  Calls made by this process:

    task_for_pid: 0

    thread_create: 0

    thread_set_state: 0

  Calls made by all processes on this machine:

    task_for_pid: 46371

    thread_create: 0

    thread_set_state: 0

VM Region Summary:

ReadOnly portion of Libraries: Total=57.3M resident=36.7M(64%) swapped_out_or_unallocated=20.6M(36%)

Writable regions: Total=17.4M written=88K(0%) resident=132K(1%) swapped_out=0K(0%) unallocated=17.3M(99%)

REGION TYPE                      VIRTUAL

===========                      =======

MALLOC                             9396K

MALLOC guard page                    16K

STACK GUARD                        56.0M

Stack                              8192K

__DATA                              668K

__LINKEDIT                         52.8M

__TEXT                             4568K

shared memory                        12K

===========                      =======

TOTAL                             131.1M

I bit the bullet, did a CLEAN install, did NOT backup from my Time Machine, and while it took a few hours, the problem happened in the middle of me sliding through SPACES.

So, again, I think it's about a call to the GPU or CPU that's causing this.

And here's another unusual aspect to it...

My Mac Pro has been doing this return to Logon all day ... however the last time the system just completely froze and I had to power cycle it.

After rebooting, somehow, my monitors are switched. What should be on my left monitor is now on my right one and vice versa. How the heck did this happen?