[ltp] T20 occasionally locking up

[Bradley W. Langhorst]

Thorsten Ohl wrote:
> 
> My T20 (2647-44: 700MHz, 128MB, 12 GB, DVD, Intel PRO/100+)
> occasionally locks up.  The symptons are that X will suddenly freeze,
> followed by a final disk access.  Then the machine is completely
> locked and responds neither to the network nor to any key on the
> keyboard (the power/reset, thinklight and backlight buttons still
> work).  After rebooting the machine, I can find no error message or
> OOPSes in the log files.
> 
> This happens randomly a couple of times per week (with about 10 hours
> of activity per day) and there _seems_ to be no correlation with the
> number of suspend/hibernate/resume cycles or the PM settings. I have
> the impression that the freeze is most likely to happen if there is
> fast scrolling (e.g. in emacs, netscape or xterm), but this can be
> just a reflection of my usage pattern.  On the other hand, it has not
> happened yet when the machine was idle, playing MP3s, performing
> numerical calculations or excessive network I/O.
> 
> The kernels are 2.2.16s: either vanilla or recently the 2.2.16+ that
> comes with SuSE-7.0.  Everything else works fine (at the beginning I
> had some trouble with the ALSA drivers but these were cause to bugs in
> an obsolete set of modutils and my stupidity and have been overcome).
> Using IO instead of MMAP in the eepro100 driver doesn't make a
> difference.
> 
> I have run the included diagnostics on three DOS disks, but couldn't
> find a hardware problem.  I know that the common wisdom for random
> locks is `faulty hardware', but I know from my own experience (on my
> Desktop machine) that buggy interrupt handling in a driver will
> produce the same symptoms.
> 
> Has anybody seen something similar?  Are there some printk()s that I
> should enable to track the problem down?
> 
> Thanks,
> -Thorsten
> --
> Thorsten Ohl, Physics Department, TU Darmstadt -- ohl@hep.tu-darmstadt.de
> http://heplix.ikp.physik.tu-darmstadt.de/~ohl/ [<=== PGP public key here]
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are you running X 4?
I had some random lock ups under 4 but never under 3.6

brad
-- 
Bradley W. Langhorst
email: brad@langhorst.com
tel:   603-773-0252
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