MDM Trouble Report for 2002 Aug 31

Telescope: 1.3m
Observer(s): Erik Brogt (Columbia)
Instrument: 8k

Problem(s) Encountered:
At first, the filter wheel could not be initialised. The error
it gave was something with a dig_in bit being wrong. I could
not take exposures because the computer was not sure where the
wheel was. I rebooted etna and powercycled the telescope (the
big switch that also controls the guider). After I booted it
gave me an error in the ACE:

Unable to verify master/slave ID bits from ACE
mlock(shm) failed: Cannot allocate memory
Readouts may fail because shared memory isn't locked down.
mlockall failed: Cannot allocate memory
couldn't lock down memory, please free memory on CCD host 
(etna) and retry

This was similar to what we had yesterday, so I reset the pci
boards. Now the computer would at least try to move the filter
wheel again, although the error above remained and the filter
wheel did not move at all, causing a filter motion time out.

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Submitted on 2002 Sep 1 [4:30:28]