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Article #3198

Re: new frame buffer card/monitor no sync

#3198
From: Robert Bonomi
Date: Sun, 16 Mar 1997 00:00
65 lines
3480 bytes
In article <E72A9x.6BA.0.hotlips@GTS.Net>, Bruce Becker <bdb@GTS.Net> wrote:
>In article <5g9obg$c86$1@wave.znet.com>, Jack Bailey <jjb@wave.zNET.com> wrote:
>|In article <5g7dqr$g3m@godzilla.zeta.org.au>,
>|Craig Dewick <craig@zeta.org.au> wrote:
>|>In <5g73mo$atv$1@wave.znet.com> jjb@wave.zNET.com (Jack Bailey) writes:
>|>
>|>>I put a new (different) frame buffer card in a sparc 2 and now the
>|>>monitor doesn't sync.  It's a sun card, although I can't find a model
>|>>number for it.  I've tried two 17" sun color monitors and a sun
>|>>monochrome monitor.  Any ideas on how to get it working?
>|>
>|>Another possibility is that depending on what you were using originally,
>|>and what you've installed now, the kernel you are running (if it's not a
>|>generic kernel, and you are running SunOS 4.1.x instead of SunOS 5.x.x)
>|>may not be configured to include support for the type of framebuffer you
>|>now have.
>|
>|There are no drives attached.  I'm just trying to get to firmware.
>|
>|>Another possibility which I've only seen once is that the combination of
>|>framebuffer and monitor may not be using compatible 'sense' signals, or
>|>the video cable may not include wires for the sense signals. I've found
>|>this once when trying a Sun 16" colour montior with a non-Sun (known
>|>working) video cable. As soon as I switched to a Sun-badged video lead,
>|>everything worked, and the only thing I could think of was the non-sun 
>|>lead didn't carry the sense signals through.
>|
>|All the parts are original sun parts.
>|
>|>Can you give us the Sun part numbers (501-xxxx) of the two framebuffers?
>|>These will help to identify what you have. 
>|
>|Yes, the card is 501-1481018087 -01REV.52.  Another tag has SL7733 on it.
                                   ^^
EUREKA!
This is a 'rev 1' version of the card.  It doesn't know how to cope with
'modern' monitors.

The "work around" -- unplug the cable from the card, power _up_ the system,
wait 30 seconds, plug the video cable back in.


>|The connector is labeled DBML-13W3SAG-21L9.
>
>
>	That is a standard CG6 double-width Sbus 8-bit
>	Color Framebuffer - it has only one raster size,
>	1152X900  61.8KHz horiz., 66 Hz. vert.
>
>
>	Your color monitors may be multisync such as Sony
>	GDM-1962, or they may sync at 71.7KHz, 76 Hz. if
>	they are newer models.  The Multisync monitors
>	_should_ work, but expect surprises with older
>	frambuffer revisions.  Try unplugging the monitor
>	after the system seems to be up, then plug it
>	back in again.
>
>
>-- 
>  ,u,	 Bruce Becker		Toronto, Ontario	1 416 699 1868
>a /i/	 Internet: bdb@gts.org	Uucp: ...!gts!bdb
> `\o\-e	 Matter cannot be created or destroyed, nor can it
> _< /_	 	be returned without a receipt	- physicists everywhere
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From: bonomi@ece.nwu.edu (Robert Bonomi)
Subject: Re: new frame buffer card/monitor no sync
Date: 1997/03/16
Message-ID: <5gg6cp$kdl$1@news.ece.nwu.edu>
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References: <5g73mo$atv$1@wave.znet.com> <5g7dqr$g3m@godzilla.zeta.org.au> <5g9obg$c86$1@wave.znet.com> <E72A9x.6BA.0.hotlips@GTS.Net>
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Newsgroups: comp.sys.sun.hardware,aus.computers.sun