[30370] in Hotline Meeting
Re: test-sgi.mit.edu hardware bug
daemon@ATHENA.MIT.EDU (John Hawkinson)
Sat Oct 14 15:49:27 1995
Date: Sat, 14 Oct 95 15:49:15 -0400
To: jjmorey@MIT.EDU
Cc: hotline@MIT.EDU, cyyang@MIT.EDU, sipb-staff@MIT.EDU
From: John Hawkinson <jhawk@MIT.EDU>
> if you plug directly into the cd the cpu internal speaker will
> still work. There are a couple connections for speaker/headphones
> on the back of the cpu, 1 will allow sound through external speakers
> and internal cpu speaker, the other will allow sound only through
> the headphones or external speakers.
Sorry for the delay in answering this.
I just went and verified the problem still exists.
When you play audio on test-sgi, and plug headphones into the
headphone jack on the machine, sometimes (it's kind of intermittentant
-- wiggling the audio plug on the headphones makes the problem come
and go) you can hear the audio through the speaker (at reduced
amplitude) as well as through the headphones.
I suggested this was a hardware bug since it sounds like the physical
mechanism which detects whether a plug is plugged in is failing
somehow.
In the original case, the headphones were indeed plugged in to the
right place. I suspect the severity of this problem varies depending
on the particular set of headphones you're using.
--jhawk
John Hawkinson
