{ "numMessagesInTopic": 23, "nextInTime": 2273, "senderId": "QXA5t3QiZpchBYwR_-T-R_cXY4hUGgdUtQJ--httFMeV__YShaH_X-9992vZjwM4Q_SdyeHQSbOOKbcfU1-yKu2P8vT0uxwWDdKQ5vKx", "systemMessage": false, "subject": "Re: Resistor replaces DVI Detective", "from": ""educationk12" <educationk12@...>", "authorName": "educationk12", "msgSnippet": "What is a totem-pole and ... Would you mind elaborating on these two terms? Totem-pole and open collector ... I m not sure what you mean here. What adapter box", "msgId": 2272, "profile": "educationk12", "topicId": 2264, "spamInfo": { "reason": "6", "isSpam": false }, "replyTo": "LIST", "userId": 247597564, "messageBody": "
> I suspect that Nvidia may be driving these pins with a totem-poleWould you mind elaborating on these two terms? Totem-pole and open
\n> output rather than traditional open-collector.
\n
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> Other things discovered during this session:I'm not sure what you mean here. What adapter box are you referring
\n>
\n> 1) The G5's "dual link" adapter box does nothing to these
\n> signals - they pass straight through the box to corresponding
\n> pins on the monitor.
\n
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> 2) The monitor puts out the same EDID on all of its cables,I hate to say this, but I don't understand what you mean here. I
\n> so in the case of using one adaptor box for dual-link
\n> and one standard cable (for the traditional 2/3:1/3 stripes)
\n> then the EDID on the single-link cable is bogus
\n> (since it offers a mode whose timing needs dual-link,
\n> it implicitly states that the monitor supports dual-link,
\n> [per the rules in the DVI spec], but the single cable
\n> offering this same EDID does not support dual-link.
\n
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> 3) Again due to the bogus EDID, software relying on theAre you saying your modification to the card causes this problem and
\n> EDID to calculate display resolution will get it wrong
\n> (mine told me that the monitor was 700mm wide and had
\n> 139DPI horizontal, 200 DPI vertical).
\n> Since I'm using X, this is fairly easily overridden,
\n> but was initially causing (for example) acrobat to
\n> show my documents tall-and-thin.
\n
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