MBP & Lion with external monitor crashes!

Here's how you do a full uninstall of insomniat:

https://answers.launchpad.net/insomniat/+faq/1707

That solved some external monitor issues for me. Still can't get my MBP to use an external monitor properly in clamshell mode.

I think this problem has been solved for a lot of people now, the common link between everything is definitely InsomniaT. Thanks everyone for the console checks! 🙂

Sorry, I don't have InsomniaT and I'm not getting those console messages.

The problem caused by InsomniaT (and the console logs as consequence) is high CPU usage and lock up of the system when external monitor is connected, while on power supply. It is a bug in InsomniaT that is been fixed.

The clamshell issue has nothing to do with CPU usage and/or InsomniaT (:

Solved for me removing insomiat

Big thanks for all!! Saved my week haha

Removing InsomniaT fixed this for me as well! Finally, I can enjoy my 22" HP dual screen setup again!

And by enjoy, I mean use it for work =P

I don't use InsomniaT and I have this problem...

This seems like a Lion bug (going to file a bug report after a few more tests on my end).

I have a 2007 Core 2 Duo MBP (A1226) and I'm getting the same problem - system freezes whenever an external external monitors is plugged in (I've tried a number of different monitors - VGA, DVI, LCD, CRT - in the last few days. Interestingly, it doesn't freeze on a VGA projector I tried!)

After plugging in an external monitor, kernal_task jumps to ~100% CPU usage and loginwindow, powerd, configd, syslogd, and Console.app use up the other core. (I have kept Console and Activity Monitor open while testing this, of course...).

Within a few minutes, system becomes completely unresponsive and needs a hard-reboot. Unplugging the monitor cable has no effect - the system does not re-stabilize.

Same kernel message numerous times in the logs -

kernel: /SourceCache/xnu/xnu-1699.24.8/iokit/Kernel/IOUserClient.cpp:

mach_msg_send_from_kernel_proper {1000000d}

as well as

kernel: /SourceCache/xnu/xnu-1699.24.8/iokit/Kernel/IOUserClient.cpp: mach_msg_send_/iokit/Kernel/IOUserClient.cpp: mach_msg_send_from_kernel_proper {1000000d}

a few times, and

kernel: /SourceCache/xnu/xnu-1699.24.8/per {1000000d}

kernel: /SourceCache/xnu/xnu-1699.24.8/iokit/Kernel/IOUserClient.cpp: mach_msg_send_froserClient.cpp: mach_msg_send_from_kernel_proper {1000000d}

etc.

There was also a refcount error that might be relevant -

com.apple.systempreferences[186]: System Preferences(186,0x7fff7de83960) malloc: reference count underflow for 0x4001a6460, break on auto_refcount_underflow_error to debug.

I didn't have InsomniaT. (Uninstalling SmartSleep, which seemed similar, didn't help either.)

Here is my story ..hope will be useful for some ppl :

First Lion crashed when connected to a Samsung Tv 22 inch. I don't know if someone experienced the same but my MBP kept crashing even after disconnecting the external display.

What i did:

-back up all important data

-clean install SL over Lion - no result

-clean instal Lion - no result

-format drive via firewire in target disk mode and clean install SL - problem solved(no crashes anymore)

-connected external display Samsung 55 inch AFTER installing all updates and BEFORE installing any other software OR restore any data from backup - MBP crashed again and continued to crash . (startup crashes , crash when wake from sleep mode , crash when move the mouse , crash when do nothing and i was in toilet , etc)

-formatted the drive again via firewire in target disk mode and clean install Lion - problem solved ( no crashes )

I am shore that my MBP will crash if i will connect again the external display but for the sake of experimenting , i will do more tests( connect another display-Thompson , connect before updates , after updates.

Boot Rom version is : MBP71.0039.BOB

The victim is a Mid 2010 MBP 13'' , 4 gb ram , 2,66 intel core 2 duo , 320 hdd , Nvidia GeForce 320 m - wich i suspect to be the cause of all the problems.

Same here.

After fixing the problem with the MBP Graphic Update 1.0 (and waiting few MONTHS for that update from Apple), I've bought an external Asus 24 inches display and connected to the MBP.

When the MBP is connected to the display crashes on wake up two times on three.

Very, very disappointing.

You have the latest firmware? Does it crash after disconnecting external display? Lion or leopard?

Lion 10.7.2, yes latest, and only, firmware: 1.0

Usually crashes on wake up with plugged monitor.

With external monitor unplugged everithing works fine.

Thanks

Try instaling latest firmware if there is one. I don't know exactly your model..but my advice is to avoid connecting the monitor untl next update. Not doing so it may lead to more problems(as happened to me). Or maybe you can stop the computer to go in sleep mode from settings if that's ok with you...(if no sleep mode = no wake up = no crash) try like this until the update comes..

Try disabling Automatic Graphics Switching in System Preferences > Energy Saver.