Q: OS X Lion freezes at login screen + App Store is slow

Same problem here with my MacBook Pro 4,1 17'' 2.5GHz 4Gb.

System loads up until the login screen, I click on my user picture, enter my password, login screen blinks and goes back to the user selection window. I've already done clean install from 10.7.3 dmg twice, did not really help a at all

Lets hope Apple comes up with a solution soon.

@Onur - obvious question, are you sure your password is correct?  If so, have you tried any fixes?  If not, please try the simple Lion Cache Cleaner first

(http://www.macupdate.com/app/mac/9503/lion-cache-cleaner), which has fixed the spinning beach balls at login for me (mid-2010 with Nvidia GeForce GT 330M 256MB).  I downloaded LCC (free demo/shareware) and did the deep cache clean (Launch app > Demo > Caches > Choose Deep Cleaning > Check all Clean checkboxes > Clean).  Click Yes for delete each cache.  Be patient as it might take a few moments to clean.  Reboot when prompted.  Again be patient.  I've been beach ball free at login for the past week.

Well, I've used the Cache Cleaner on my iMac and it has helped but not resolved my beach ball @ login issue. I appreciate the help though. The freezing is far less frequent at the login screen and the one time it froze recently, putting it to sleep and waking it once unfroze the login screen. An irritating band-aid fix, but I'm just happy for even slight improvement. Thanks everyone.

@Onyr: It is interesting that the first MBP for which parameters are defined is MacBookPro5,1, in the /System/Library/Extensions/AppleGraphicsPowerManagement.kext/Contents/info.plis t file of my Lion 10.7.3 17" MBP. And this is not a "Spinning BeachBall" problem.

One thing I might try is SDG Consultant's suggestion (backup your Mac first, then), as s/he said:

Go to your /system/library/extensions/

Drop the AppleGraphicPowerManagent.kext to the bin. (don't empty it for the moment)

reboot in safe mode to rebuild the extension cache. Enable login session and automatic graphic switch.

Restart....

No beach ball

(But - again - this is not a "beach ball" problem).

After sometime of no beach balls, freezes and other bad things on my MBP mid-2010, with lion, today, when I opened the laptop wishing to work after a resume, bang.... beach ball unresponsive system, couldn't use my password to unblock the screen and ended up having to do a hard reset.

The AGPM.kext did work for me for sometime, it did ended the freezing stuff, but now something else came with the update to 10.7.3.

I'm sorry to say, but lion on my laptop is unreliable and slow, I also have problems with safari, that end up givin blank screen on tab change and then I have to reload the tab to get the page, I also have a problem of safari and google, returning it changes the search on google, Not to mention the unresponsive Photoshop, which doesn't work on lion if I don't turn of the nvidia card, since photoshop rely so much on opengl, this means really poor peformance, also not mentioning the fact that my usb entries are really slow (copying with 700 kbps when it should be using 7 mbps)

I think that lion needs too much work to get reliable for me. Even though we are now at 10.7.3, I'll return to 10.6.8 because, even though the lion improvements are nice, realiability is still a huge factor for me.

Also, I don't think the problem is at the AGPM indeed, because messing with AGPM, even though helped, it seemed to have something with log, so it seems something more like system is trying to log graphics information and end up having a crash.

I've had the same experience. I've followed the instructions in the earlier posts and edited the plist Kext file, done a safe reboot with the whole package I the trash followed by a normal reboot with the snow leopard settings in place.  While it seemed more stable for a while it's now started b-balling again.

Interestingly though I use an 27" external cinema display on my mid 2010 mbpro. If I unplug the power this forces the MBP to go to sleep. I can then wake it backup and I have some use before a freeze which usually allows me to log back in.  I've now set up the abili to terminal in and sleep remotely so that I can manage it this way.

I think that Lion has become a Lost Cause. I suspect that we will not see a "patch" for the multitude of problems when trying to run on officially-supported, pre-Lion hardware. As a former mainframe and minicomputer developer, I have seen this happen when it is more trouble to fix than it's worth. You simply "go back to the drawing board" and start over.

Here's my findings on the login freezing issues:

Everytime I reboot back from Windows7 (installed on a seperate partition of the same drive), i encounter the freezing problem. Single-User Boot etc isnt helping at all. I boot with Cmd-R for Lion Recovery and use Disk Utility and "Repair Disk". At the end of Repair Disk details, it mentions sthing about "Repairing boot sequence, etc..", i believe thats whats doing the magic. Somehow, booting my MacBook Pro on Windows7 damages the OSX boot..

I think you're right. It is a lost cause.

"Lion cache cleaner" worked good in the begin but then same problems.

I even reformatted the HD and reinstalled OS X Lion clean from a thumb drive.

Again, it worked well for a day and then the Login Screen Freeze again.

At this point I think that we should call this OS "Frozen Lion".

Apple when are you going to come out with a fix?

food2prep: The word on the street is that "a fix" exists. But not for Lion.

I have given up trying different things to work-around the SBBoD problem. After spending dozens of hours, and seeing all the different "fixes" that everybody (including me) has reported trying - some of which work but only for a limited time - my last guess is that the real problem (but who knows?) is caused by cache-corruption - possibly resulting from memory leaks at the kernel-level. If it's happening in a kernel-level process then only the OS-guys can properly fix it.

Every time you do a clean-install, you will need to repeat the "kext-fix" -  because the clean install will reintroduce the code and/or kernel-extensions errors. This is a hassle: you need to have a full backup; then clean install; then re-edit the kext file(s) - safe reboot, cache clean, etc. And repeat whenever necessary! Pass!

I am not buying any more Mac OS X (or simply OS X) hardware until these issues have demonstrably been fixed. Adios!

Please read my solution here:

https://discussions.apple.com/thread/3810249

Please read my solution here:

https://discussions.apple.com/thread/3810249

diogoenoque wrote:

 

After sometime of no beach balls, freezes and other bad things on my MBP mid-2010, with lion, today, when I opened the laptop wishing to work after a resume, bang.... beach ball unresponsive system, couldn't use my password to unblock the screen and ended up having to do a hard reset.

 

The AGPM.kext did work for me for sometime, it did ended the freezing stuff, but now something else came with the update to 10.7.3.

 

I'm sorry to say, but lion on my laptop is unreliable and slow, I also have problems with safari, that end up givin blank screen on tab change and then I have to reload the tab to get the page, I also have a problem of safari and google, returning it changes the search on google, Not to mention the unresponsive Photoshop, which doesn't work on lion if I don't turn of the nvidia card, since photoshop rely so much on opengl, this means really poor peformance, also not mentioning the fact that my usb entries are really slow (copying with 700 kbps when it should be using 7 mbps)

 

I think that lion needs too much work to get reliable for me. Even though we are now at 10.7.3, I'll return to 10.6.8 because, even though the lion improvements are nice, realiability is still a huge factor for me.

 

Also, I don't think the problem is at the AGPM indeed, because messing with AGPM, even though helped, it seemed to have something with log, so it seems something more like system is trying to log graphics information and end up having a crash.

You are not alone... I too had to return to SL due to the spinning beach ball freezes, even after 7 clean reinstalls and extensive testing Apple and I could never find the reason of why this was happening. My theory is that these freezes have to do with the mid-2010 MacBook Pro Automatic Graphics Switching function for the nvidia 330m GPUs. I have a bug report in Apple for it and still there's no solution as the problem is hard to replicate. the only indicator of the problem is a mysterious DumpGPURestart message in Console.

Would you mind if I ask you if you have the same DumpGPURestar strings in Console?

Hope the downgrade goes well, and so far my Mac has not given me any hiccups since coming back to SL.

Well, since my comeback to SL, nothing wrong happens, the battery works as expected (longer battery life), the applications opens faster and a lot of other things, there is really a problem with mid-2010 and lion.

My crashes always came with a NVDA: OpenGL Channel Exception log message. Showing as if the problem was unreachable OpenGL from NVidia card, even though opengl did work very well on the applications.

Nothing seemed to help, the kext worked but then didn't anymore, and the LCC had the same effect, temporary fix.

I can say that it is not hardware because if it were, SL wouldn't be just fine.

The question is how do we go from Time Machine backup of 10.7.3 back to 10.6.8?.. Wouldnt you encounter any problems regarding old version incompatibility??