Nanofunk Blog Main Site

Geek blog for all things hackintosh, dslr video plus tweaking, hacking and modding your gear and gadgets.

29Apr/111

MacBook Pro Early 2011 freezes and kernel panics: revert to 32bit to have a stable system

As we already blogged some time ago, we had severe overheating issues and frequent kernel panics with our early 2011 models of the MacBook Pro Core-i7 quad. Still, after the updates there are crashes from time to time - the early 2011 models are far away from being stable machines to use for serious work.

After days of trying to figure out what is really the issue, we found that most of the times device drivers or other third party apps are mostly causing the crashes - but also CPU-intensive apps such as games sometimes bring the system down. Solution? Yes, there is one: change your system to a 32bit Kernel.

1) The bootup way (temporary solution, great for testing)

If you just want to test if changing to 32bit changes anything, you can reboot your mac and hold down the "3" and "2" keys as soon as you hit the power button. This boots up your Apple in 32bit mode temporarily. If the system

2) The Terminal Way (see the Apple Support Document for more information)

sudo systemsetup -setkernelbootarchitecture i386

if you need to change your system back to normal for any case, you can enter the following command into Terminal.app:

sudo systemsetup -setkernelbootarchitecture x86_64

Just to make it clear: your applications will still run in 64bit mode, you can make sure this is the case by hitting cmd+i on the application icon and see if "Open in 32-bit mode" is checked. See this article from simplehelp with details and images on 32-bit mode. So why should I care then, you might ask: since drivers and 3rd party apps and extensions that are loaded on startup are most of the time the issue with system freezes and hangs, changing to a 32bit kernel did the trick for us and now we have a stable 2011 MBP quad-core system.

[UPDATE] 10.6.8 seems to work with 64bit kernel much more stable than 10.6.7. Still, to be on the safe side we are using the 32bit kernel and had no freezes yet.

12Mar/1116

Apple MacBook Pro Quad Core (early 2011) i7: fast powerhorse with design flaws and hardware issues

Apple gets sloppy: too much thermal paste on the early 2011 MacBook Pro

While the new Apple MacBook Pro Machines are really fast desktop-like speed packed monsters, it seems like they also have severe hardware design faults as outlined by zdnet and ifixit. With a geekbench score over 10.000 the new MacBook Pro (early 2011) beats the Mac Pro (Early 2009) Intel Xeon W5590 3.33 GHz (4 cores). All the good talk and benchmarks cannot make up for the current problems Apple users are facing with their brand new machines:

Come on Apple, wake up and fix those machine fast, as lots of us could benefit from a stable quad-core laptop solution (talking audio plugs and realtime audio performance).

We can recommend to tell apple to send the replacements before they pick up the faulty machines, so it is easier to transfer the data already on it. (apple care even suggested it this way)

[UPDATE] Gregg Keizer from Computerworld also writes about quality concerns regarding the new Apple Notebooks and there is also a discussion about actual "Overheating" going on in the Apple Forums. Well, I can confirm the issue exists and the current MacBook Pro Models freeze a lot. If it is a hardware, software or firmware issue remains unclear.

[UPDATE] There is a macrumors forum thread discussing that there were issues with the 2010 MBPs as well when they came out. Another thread at macrumors forum tries to sort out if it is a hardware or software issue.
Some people suspect it is related to internal graphics switching, but there really seems to be something going on since also reports on the apple discussion forums are increasing.

[UPDATE] as of 2011/03/14 macrumors suggest in their forum to "go 2010 or wait for ivy bridge". The early 2011 version of the MacBook Pro das 45W TDP vs. last generation's 35w. That's a big increase which automatically makes the whole series go louder and more hot than the 2010 model.

[UPDATE] 2011/03/21: Macrumors posted a story: "2011 MacBook Pros Crashing Under Load?"

[UPDATE] 2011/03/21: Mac OSX 10.6.7 Update was just announced by Apple. Unfortunately, on the two machines we have here, the update does not fix anything related to CPU temperature. Still there are frequent freezes as well.

[UPDATE] 2011/03/22: dailytech confirms that New MacBook Pros Freezing When Stressed, Update Adds More Problems

[UPDATE] 2011/03/28: we received our two replacement MacBook Pros. They don't seem to have any issues and also still did not freeze on us! Also the fans are not spinning like crazy anymore! For all people affected by any of the issues reported above: get your Notebooks replaced! Apple is aware of the issues and replaces faulty hardware (we had to wait for two weeks though).

[UPDATE] 2011/04/23: the current Systems freeze 2-3 times a day. Not all the issues seem to be solved! You should definitely get a late 2010 model, if you need a highly stable system!

[UPDATE] 2011/11/01: Apple replaced one of our 15-inch MBP MC721LL/A machine and the freezes are not appearing anymore. Reports from other users that bought an early 2011 model are positive, so currently the advice would be to get a refurbished Apple MacBook Pro MC721LL/A 15.4-Inch Laptop even before getting a MD318LL/A 15.4-Inch (late 2011) version, not only because of saving some bucks, but also since the Apple MacBook Pro early 2011 performs better in most of the situations compared to the late 2011 version.

Besides the heating issues, there are also reported "intermittent flickering, brief blackouts and other periodic but noticeable flaws" reported in the Apple Discussion Forums. We are getting replacement Machines - let's see if there is any improvement after the first round of shipping!

   
..