[1502] in Hotline Meeting
bad megapel adapter and RT SCSI cable
daemon@ATHENA.MIT.EDU (John Carr)
Wed Aug 22 05:35:05 1990
To: hotline@ATHENA.MIT.EDU
Date: Wed, 22 Aug 90 05:34:51 EDT
From: John Carr <jfc@ATHENA.MIT.EDU>
The megapel display adapater in my RT failed today. It was displaying
some colors wrong; when I rebooted hoping that would reset the board,
the machine hung after loading the kernel. It also hung when I tried
to run diagnostics (showing "66" on the LEDs). The machine is now up,
minus the megapel board. The board is currently on the chair next to
the hotline desk, with a label "jfc" on it.
Under the megapel board is an RT SCSI cable. When the system came up
after I removed the megapel board, the kernel did not recognize the
Athens drives. I can think of 3 possibile reasons: (1) while failing,
the megapel adapter damaged the SCSI adapter (2) as I was moving the
system to remove the megapel, I damaged the cable (3) the cable failed
for other reasons (I had to turn off the drives; I have seen this cause
drive failures in the past). The cable is labeled "bad?".
