[Bugme-new] [Bug 16591] New: iwlagn reports "MAC is in deep sleep!. CSR_GP_CNTRL = 0xFFFFFFFF", system hangs

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=16591

           Summary: iwlagn reports "MAC is in deep sleep!.  CSR_GP_CNTRL =
                    0xFFFFFFFF", system hangs
           Product: Networking
           Version: 2.5
    Kernel Version: 2.6.35
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Wireless
        AssignedTo: networking_wireless at kernel-bugs.osdl.org
        ReportedBy: josh at kernel.org
                CC: reinette.chatre at intel.com
        Regression: No


Rather frequently now, my laptop hangs, and I find these messages in
/var/log/kern.log after rebooting:

iwlagn 0000:03:00.0: queue 2 stuck 3 time. Fw reload.
iwlagn 0000:03:00.0: On demand firmware reload
iwlagn 0000:03:00.0: MAC is in deep sleep!.  CSR_GP_CNTRL = 0xFFFFFFFF
[repeated umpteen times]
iwlagn 0000:03:00.0: Could not load the INST uCode section
iwlagn 0000:03:00.0: Unable to set up bootstrap uCode: -110
iwlagn 0000:03:00.0: MAC is in deep sleep!.  CSR_GP_CNTRL = 0xFFFFFFFF
[repeated]

Not long after these messages start, my system hangs, or at least I can no
longer interact with it.  I don't know if this means that graphics and input
stopped working, or if the system actually wedged completely in some way;
either way, I have to power off and reboot.

I saw this issue mentioned in bug #16084 , but comment 15 of that bug requested
opening a new bug if encountering the issue again, and I didn't see a new bug
opened that I could comment on, so I've opened this new one.

Responding to some of the requests for information I've seen:

- This system does not have AMT.
- Normally I don't know that the bug has occurred until the system hangs,
making it hard to check lspci.  However, I can try writing a script to poll for
the errors in dmesg and log lspci output when they occur; if I get any results
from this, I'll report back.

Please let me know if I can provide any other information to help track down
this problem.  At this point, the hangs have become sufficiently frequent to
make using the system quite problematic.

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