SUMMARY: Uncorrectable system bus (UE) Event causes Kernel Panic and system lockup

From: Stanley Laufer <>
Date: Sat Mar 05 2005 - 12:31:22 EST
Thanks to all those who responded.

One respondant suggested that if the system is in a cooled
environment (which it is), then this might be indicative
that one of the CPUs is going bad.

I checked the CPU temps, and both are staying around 42C - 46C
in a room that is kept between 65F - 69F year round.

Another respondant also suggested that if Solaris is fully
patched, then it is indeed most likely a flaky CPU.

Finally, another respondant suggested that CPU/Bus errors
could originate in the CPU, memory, motherboard, or the
system bus.

Thanks again to all those who responded.  I also located a
sunmanagers thread dealing with a similar issue:

In our case, since this is a high availability production system,
I decided to proactively open a case with Sun, since the machine
is still under hardware warranty.

Their conclusion is that CPU0 is the issue and needs to be
replaced.  So, they're shipping a replacement CPU out to us.

Stanley E. Laufer
Network Administrator
School of Library and Information Science
San Jose State University
sunmanagers mailing list
Received on Sat Mar 5 12:32:28 2005

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