Q: Mac Pro "GPU Debug Info Start" with ATI Radeon HD 5770
Hello,
I own a Mac Pro (mid-2010) for about 10 months now. Everything was working great from the start, but recently the Mac display froze twice.
First freeze occured on 2011/09/01, the second freeze occured on 2011/10/21.
Symptoms are well known, I guess: screen freezes, only the mouse cursor can move (even the clock stops). Nothing can be done about that:
- you can connect to the Mac via ssh but even the `sudo reboot` won't reboot the box
- osascript won't work (as a soft "appleish" way to close applications and reboot).
The only way to reboot is to push the power button of the Mac Pro.
Kernel log seem to put the blame on the GPU:
Sep 1 23:39:49 cassandre kernel[0]: ** Device in slot: SLOT-1 **
Sep 1 23:39:49 cassandre kernel[0]: ** GPU Debug Info Start **
Sep 1 23:39:49 cassandre kernel[0]: 0x000068b8
Sep 1 23:39:49 cassandre kernel[0]: 0x0000008f
...
Sep 1 23:40:06 cassandre kernel[0]: 0x00000000
Sep 1 23:40:15: --- last message repeated 16 times ---
Sep 1 23:40:06 cassandre kernel[0]: ** GPU Debug Info End **
and:
Oct 21 22:47:16 cassandre kernel[0]: ** Device in slot: SLOT-1 **
Oct 21 22:47:16 cassandre kernel[0]: ** GPU Debug Info Start **
Oct 21 22:47:16 cassandre kernel[0]: 0x000068b8
Oct 21 22:47:16 cassandre kernel[0]: 0x0000008f
...
Oct 21 22:47:43: --- last message repeated 383 times ---
Oct 21 22:47:33 cassandre kernel[0]: 0x00000000
Oct 21 22:47:43: --- last message repeated 15 times ---
Oct 21 22:47:33 cassandre kernel[0]: ** GPU Debug Info End **
Oct 21 22:47:43 cassandre kernel[0]: ** Device in slot: SLOT-1 **
Oct 21 22:47:43 cassandre kernel[0]: ** GPU Debug Info Start **
Oct 21 22:47:43 cassandre kernel[0]: 0x000068b8
Oct 21 22:47:43 cassandre kernel[0]: 0x0000008f
...
Oct 21 22:48:11: --- last message repeated 383 times ---
Oct 21 22:48:00 cassandre kernel[0]: 0x00000000
Oct 21 22:48:11: --- last message repeated 15 times ---
Oct 21 22:48:00 cassandre kernel[0]: ** GPU Debug Info End **
Oct 21 22:48:11 cassandre kernel[0]: ** Device in slot: SLOT-1 **
Oct 21 22:48:11 cassandre kernel[0]: ** GPU Debug Info Start **
Oct 21 22:48:11 cassandre kernel[0]: 0x000068b8
...
Oct 21 22:48:24 cassandre kernel[0]: 0xffffffff
Oct 21 22:48:28: --- last message repeated 383 times ---
Oct 21 22:48:28 cassandre kernel[0]: 0x00000000
Oct 21 22:48:28: --- last message repeated 15 times ---
Oct 21 22:48:28 cassandre kernel[0]: ** GPU Debug Info End **
Oct 21 23:07:59 cassandre kernel[0]: Kext loading now disabled.
Oct 21 23:07:59 cassandre kernel[0]: Kext unloading now disabled.
Oct 21 23:07:59 cassandre kernel[0]: Kext autounloading now disabled.
Oct 21 23:07:59 cassandre kernel[0]: Kernel requests now disabled.
Oct 21 23:08:09 cassandre kernel[0]: ** Device in slot: SLOT-1 **
Oct 21 23:08:09 cassandre kernel[0]: ** GPU Debug Info Start **
Oct 21 23:08:09 cassandre kernel[0]: 0x000068b8
...
This Mac Pro has a pretty good uptime (max 50 days, average ~16.5 days, stats collected from mid feb 2011 to now). I reboot only because of software updates and GPU bugs. I'm running 10.6 with every updates.
The warranty covers this Mac Pro until mid-january. Do I need to ask for a replacement of the GPU (ATI Radeon HD 5770)?
Mac Pro, Mac OS X (10.6.8), 12 GB RAM / ATI Radeon HD 5770
Posted on Oct 22, 2011 4:25 AM
