4 Dec
2002
4 Dec
'02
8:01 p.m.
At 03:01 PM 12/4/02 -0500, you wrote:
On Wed, 4 Dec 2002, Joe wrote:
I don't think it's even exiting power save. When I turn it on the power light
comes on and there's a click from inside the monitor. After a few seconds the yellow
power save light comes on and then I hear another click from inside the monitor. When I
turn the Indigo on, it powers up and plays it's tune so I know that it's started
but nothing changes on the monitor.
I disconnected the video cable at the monitor and looked for sync on pin 3 and found
that there was no sync* unless I started the Indigo with no monitor connected. (The sync
was 63.something kHz). If I then connected the video cable to the monitor both the yellow
power save and green power lights started blinking.
*I don't think the lack of sync on pin 3 indicates a problem. This monitor is
suppossed to Sync-on-Green. In fact, the lack of sync on 3 when I boot the computer with
the monitor connected may well indicate that the computer recognizes that this monitor
doesn't use a separate sync signal.
The computer is definitely working. After trying these monitors I plugged the video
cable into my usual monitor and everything worked exactly as it's supposed to.
I was wondering, if I use a logic pulser and pulse the green input on the monitor will
it generate random garbage on the screen? Any thoughts on that?
Joe
I found two SGI "granite" monitors
for $5 in a surplus place this
morning. Does anyone know if these will work with the SGI Indigo?
(XS-24 video card.) I tried them but I'm not getting any video and
I'm not sure if these are both bad or if they're even supposed work
with the Indigo. I checked the SGI and Indigo FAQs and can't find
anything about exactly what systems the monitors are compatible with.
Yeah, those should work just fine on the Indigo.
I assume your Indigo is known operational, and that you have a suitable
cable. Do the monitors just not display a picture, or do they not even
exit power-save?
ok
r.
4 Dec
4 Dec
8:17 p.m.
Sounds like the monitor is getting confused by the other sync signals.
I had the same problem trying to connect an SGI Indigo 2 to a standard
VGA monitor. I found that by making a simple cable with only pins
1,2,3,6,7, and 8 connected (VGA red, green and blue, and associated
grounds). This stripped the extra signals, and it worked flawlessly. I
would think an actual SGI monitor would work fine without any
modifications though, but then again, it didn't work with my Sun
GDM-17E10 monitor without this sort of adapter.
Ian Primus
ian_primus(a)yahoo.com
On Wednesday, December 4, 2002, at 09:06 PM, Joe wrote:
At 03:01 PM 12/4/02 -0500, you wrote:
On Wed, 4 Dec 2002, Joe wrote:
I don't think it's even exiting power save. When I turn it on the
power light comes on and there's a click from inside the monitor.
After a few seconds the yellow power save light comes on and then I
hear another click from inside the monitor. When I turn the Indigo on,
it powers up and plays it's tune so I know that it's started but
nothing changes on the monitor.
I disconnected the video cable at the monitor and looked for sync
on pin 3 and found that there was no sync* unless I started the Indigo
with no monitor connected. (The sync was 63.something kHz). If I then
connected the video cable to the monitor both the yellow power save
and green power lights started blinking.
*I don't think the lack of sync on pin 3 indicates a problem. This
monitor is suppossed to Sync-on-Green. In fact, the lack of sync on 3
when I boot the computer with the monitor connected may well indicate
that the computer recognizes that this monitor doesn't use a separate
sync signal.
The computer is definitely working. After trying these monitors I
plugged the video cable into my usual monitor and everything worked
exactly as it's supposed to.
I was wondering, if I use a logic pulser and pulse the green input
on the monitor will it generate random garbage on the screen? Any
thoughts on that?
Joe
I found two SGI "granite" monitors
for $5 in a surplus place this
morning. Does anyone know if these will work with the SGI Indigo?
(XS-24 video card.) I tried them but I'm not getting any video
and
I'm not sure if these are both bad or if they're even supposed
work
with the Indigo. I checked the SGI and Indigo FAQs and can't find
anything about exactly what systems the monitors are compatible
with.
Yeah, those should work just fine on the Indigo.
I assume your Indigo is known operational, and that you have a
suitable
cable. Do the monitors just not display a picture, or do they not even
exit power-save?
ok
r.
5 Dec
5 Dec
12:51 a.m.
On Wed, 4 Dec 2002, Joe wrote:
*I don't think the lack of sync on pin 3
indicates a problem. This
monitor is suppossed to Sync-on-Green. In fact, the lack of sync on 3
when I boot the computer with the monitor connected may well indicate
that the computer recognizes that this monitor doesn't use a separate
sync signal.
It does not indicate a problem. The Indigo outputs composite sync on
green. Later SGI workstations use the 10 non-coaxial pins for monitor type
sense---off the top of my head I don't remember whether the Indigo uses
them or not. If you are not using an SGI cable, it is possible that some
of the data pins are wrapped in an inappropriate way that is confusing the
graphics card.
If you power up the Indigo with no cable attached it should default to
outputting some sane mode (either 1024x768 @ 60Hz or 1280x1024 @ 70 Hz,
not sure) that you could then try connecting the monitor after the boot
completes, and see what happens.
The computer is definitely working. After trying
these monitors I
plugged the video cable into my usual monitor and everything worked
exactly as it's supposed to.
The video sense logic lies dormant after the X server (graphical login)
starts. From reading your description of the problem, though, I really
doubt this is the problem. It sure sounds like there's something
pear-shaped with the monitor.
I was wondering, if I use a logic pulser and pulse
the green input on
the monitor will it generate random garbage on the screen? Any
thoughts on that?
I doubt it will work, as the monitor will not exit power-save until it
receives a valid sync signal.
ok
r.
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