My MacBoook Pro freezes at log in screen...
Hi,
Recently, I disabled automatic login in OSX Lion. However, I have noticed that in doing so my MacBook sometimes will freeze at the log in screen (with a spinning beach ball) forcing me to force restart. Checking in console, it seems that the issue is somehow related to the GPU. Here are the console messages.
1/13/12 12:06:33.246 AM sandboxd: ([108]) DumpGPURestart(108) deny file-write-create /Library/Application Support/SubmitDiagInfo
1/13/12 12:06:33.288 AM sandboxd: ([108]) DumpGPURestart(108) deny ipc-posix-shm apple.shm.notification_center
1/13/12 12:06:33.289 AM sandboxd: ([108]) DumpGPURestart(108) deny ipc-posix-shm apple.shm.notification_center
1/13/12 12:06:33.290 AM sandboxd: ([108]) DumpGPURestart(108) deny ipc-posix-shm apple.shm.notification_center
1/13/12 12:06:33.291 AM sandboxd: ([108]) DumpGPURestart(108) deny ipc-posix-shm apple.shm.notification_center
1/13/12 12:06:33.304 AM sandboxd: ([108]) DumpGPURestart(108) deny ipc-posix-shm apple.shm.notification_center
1/13/12 12:06:33.322 AM sandboxd: ([108]) DumpGPURestart(108) deny ipc-posix-shm apple.shm.notification_center
1/13/12 12:06:33.323 AM sandboxd: ([108]) DumpGPURestart(108) deny network-outbound /private/var/run/mDNSResponder
1/13/12 12:06:33.324 AM sandboxd: ([108]) DumpGPURestart(108) deny file-read-data /private/etc/hosts
1/13/12 12:06:33.325 AM sandboxd: ([108]) DumpGPURestart(108) deny file-read-data /private/etc/hosts
1/13/12 12:06:33.343 AM sandboxd: ([108]) DumpGPURestart(108) deny ipc-posix-shm apple.shm.notification_center
1/13/12 12:06:33.345 AM sandboxd: ([108]) DumpGPURestart(108) deny ipc-posix-shm apple.shm.notification_center
1/15/12 8:34:16.596 PM sandboxd: ([128]) DumpGPURestart(128) deny file-write-create /Library/Application Support/SubmitDiagInfo
1/15/12 8:34:16.638 PM sandboxd: ([128]) DumpGPURestart(128) deny ipc-posix-shm apple.shm.notification_center
1/15/12 8:34:16.645 PM sandboxd: ([128]) DumpGPURestart(128) deny ipc-posix-shm apple.shm.notification_center
1/15/12 8:34:16.647 PM sandboxd: ([128]) DumpGPURestart(128) deny ipc-posix-shm apple.shm.notification_center
1/15/12 8:34:16.648 PM sandboxd: ([128]) DumpGPURestart(128) deny ipc-posix-shm apple.shm.notification_center
1/15/12 8:34:16.649 PM sandboxd: ([128]) DumpGPURestart(128) deny ipc-posix-shm apple.shm.notification_center
1/15/12 8:34:16.665 PM sandboxd: ([128]) DumpGPURestart(128) deny ipc-posix-shm apple.shm.notification_center
1/15/12 8:34:16.667 PM sandboxd: ([128]) DumpGPURestart(128) deny network-outbound /private/var/run/mDNSResponder
1/15/12 8:34:16.667 PM sandboxd: ([128]) DumpGPURestart(128) deny file-read-data /private/etc/hosts
1/15/12 8:34:16.668 PM sandboxd: ([128]) DumpGPURestart(128) deny file-read-data /private/etc/hosts
1/15/12 8:34:16.685 PM sandboxd: ([128]) DumpGPURestart(128) deny ipc-posix-shm apple.shm.notification_center
1/15/12 8:34:16.686 PM sandboxd: ([128]) DumpGPURestart(128) deny ipc-posix-shm apple.shm.notification_center
1/15/12 9:09:26.511 PM sandboxd: ([333]) DumpGPURestart(333) deny file-write-create /Library/Application Support/SubmitDiagInfo
1/15/12 9:09:26.534 PM sandboxd: ([333]) DumpGPURestart(333) deny ipc-posix-shm apple.shm.notification_center
1/15/12 9:09:26.536 PM sandboxd: ([333]) DumpGPURestart(333) deny ipc-posix-shm apple.shm.notification_center
1/15/12 9:09:26.537 PM sandboxd: ([333]) DumpGPURestart(333) deny ipc-posix-shm apple.shm.notification_center
1/15/12 9:09:26.539 PM sandboxd: ([333]) DumpGPURestart(333) deny ipc-posix-shm apple.shm.notification_center
1/15/12 9:09:26.541 PM sandboxd: ([333]) DumpGPURestart(333) deny ipc-posix-shm apple.shm.notification_center
1/15/12 9:11:30.625 PM com.apple.stackshot: Running fs_usage, spindump and top
The thing is that I do not know what could be causing this issue with the GPU. It has happened 3 times already since disabling auto log in, and at the same place. I know that my MacBook Pro model is under an Apple service program due to some being shipped with faulty logic boards (see here). But, before going through the hurdle of visiting my Apple Store and get my computer tested for a possible failure, I would like to know what other possibilities can cause my issue.
Thanks for any assistance that can be provided on this matter. I honestly need some assistance with this issue...😕
2.53GHz Core i5 MacBook Pro 15, Mac OS X (10.7.2), 500GB HD @7200, 4GB 1067MHz DDR3 RAM, Intel HD + Nvidia 330m 256