Debugging a hard system wedge
Debugging a hard system wedge
- Subject: Debugging a hard system wedge
- From: Godfrey van der Linden <email@hidden>
- Date: Fri, 11 Dec 2009 14:05:51 +1100
G'day, All.
Really there is no other place to ask this. I mean if you have a hammer (some knowledge of kernel programming) everything looks like a nail.
On my brand new MacBookPro5,3 (2.66Ghz) 10.6.2 system I have been getting unexplained hard wedges. The symptoms:-
- The menu clock seconds counter keeps ticking.
- The mouse still moves
- The fans do not spin up.
- top in terminal stops reporting
- ssh into the system doesn't work.
- After a wakeup the login window works to type the password in, but it hangs around with a spinning cog and never logs me in.
- I suspect that mDNS isn't going either as the machines <name>.local doesn't seem to resolve, though I'm not sure of that.
- May be unrelated, the system never, ever goes to idle sleep. I must close the lid or it will happily sit there for hours with the screen off but otherwise running.
I haven't attempted to connect to the system with GDB yet as the symptoms feels wrong to me as a kernel hang. I'd like the groups opinion on the utility of showallstacks and other magic kgmacros to track this down.
I don't really have any interesting kernel level apps running, for instance I do not run any of the virtualisers. I do run teleport that I think may have a kext but it seems pretty harmless generally -- I have deactivated it in the hope of localising the problem.
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