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Author Topic: How to keep monitor as primary OR how to ignore "attached" status in Windows XP?  (Read 12860 times)
Protonus

Posts: 4


« on: April 07, 2010, 07:32:08 PM »

I have a Nvidia GT220 video card in a Dell Optiplex GX620 SFF PC, as an HTPC. I have it connected via HDMI, to my HK AVR254 receiver, which is then connected to my projector via HDMI as well. This has been working great, turn off my AVR and my PJ and turn them back on, switch to the right inputs, and I get video off the HTPC every time.

I have now added a SECONDARY display to the HTPC - a small LCD hooked up to the VGA port of the same GT220 video card. I have it setup as the secondary monitor in Windows, with the PJ on HDMI as Primary, like it was before. And this also works great.

UNTIL I turn off my PJ and AVR (I tend to leave the HTPC on at all times). Pretty much right after, Windows flags my AVR via HDMI as no longer "attached" in the display properties, and automatically makes the secondary display, the small LCD on VGA, the primary monitor. This moves all the icons over, task bar, any programs on the primary to secondary, etc. To get the primary via HDMI working again, I gotta go into display properties, mark it as "attached", set resolution, set it primary, etc... a huge PITA!

I want to avoid having to do that... figure that means either making Windows ignore, the "attached" status of the HDMI connection, OR telling it no matter what, to keep the HDMI connection the primary one. Or something else, I'm not sure, but that's why I'm here... I've lost a lot of hair and time trying to find a solution. If it takes buying software to allow this i'm ok with that, but I would definitely prefer NOT to change OS, or add or change any hardware.... Seems so simple, but I guess not!

Thanks very much in advance!  Huh
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Ashley Saldanha
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Posts: 1806


« Reply #1 on: April 08, 2010, 05:17:10 AM »

This is perfectly normal behavior - you don't say what the OS is, and you probably can't stop it, but you may be able to work around it in fewer steps.
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Protonus

Posts: 4


« Reply #2 on: April 08, 2010, 10:06:08 AM »

This is perfectly normal behavior - you don't say what the OS is, and you probably can't stop it, but you may be able to work around it in fewer steps.

OS is noted in the subject (Windows XP)  Wink
It might be normal but it's undesired, I don't have any reason to need Windows to decide for me what monitor should be primary or care whether a monitor is attached or not. 
If I keep my AV receiver on, windows keeps it attached but as soon as it's power off it disables the output and changes the primary to my secondary... 
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Ashley Saldanha
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Posts: 1806


« Reply #3 on: April 08, 2010, 12:40:58 PM »

I understand, and I didn't mean it was normal for me personally, but rather normal as to industry standards - specifically Plug-and-Play, and its corollary UnPlug-and-PlayIsDisabled.

There are little device from companies like Geffen that insert a EEPROM between your PC and your receiver or monitor, keeping the PnP connection alive even when the latter is offer or removed.
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Protonus

Posts: 4


« Reply #4 on: April 08, 2010, 01:10:37 PM »

I understand, and I didn't mean it was normal for me personally, but rather normal as to industry standards - specifically Plug-and-Play, and its corollary UnPlug-and-PlayIsDisabled.

There are little device from companies like Geffen that insert a EEPROM between your PC and your receiver or monitor, keeping the PnP connection alive even when the latter is offer or removed.

Lookin around their website, not finding anything specifically like you mentioned, would you mind providing a link? Thanks in advance
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Ashley Saldanha
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Posts: 1806


« Reply #5 on: April 09, 2010, 05:38:06 AM »

I think this is what you want.
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Protonus

Posts: 4


« Reply #6 on: April 27, 2010, 01:03:47 PM »

I think this is what you want.

Thank you for pointing out this product. Indeed, it seemed like exactly what I needed.  Unfortunatly the cheapest I could find it was $100+shipping... far too much for what it is IMHO and for the problem. 

However, I found a much cheaper way to fix this.  I had a mini HDMI switch box from here:
http://www.meritline.com/hdmi-v1-3-hdcp-3-ports-mini-switch-with-3-pcs-of-hdmi-cable---p-33053.aspx
that is normally powered by HDMI. However it does have an optional 5 volt DC connector - that I got a power supply for (off eBay).  I put the switch box with power between my receiver and the HTPC and... it's fixed.  The constant power from the switch box seems to satisfy Windows that there is a monitor connected and it "solves" this problem. 

If I had to point fingers... I'd say H/K for not making my receiver keep the HDMI ports energized when turned off, or Windows for not having a "ignore EDID polling" option or Nvidia for not having an option in their drivers for "ignore EDID polling" or "over ride EDID" or something to that effect.  For now this works well enough other then adding more clutter behind my A/V rack and an extra cable and power cord. 
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Ashley Saldanha
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Posts: 1806


« Reply #7 on: April 27, 2010, 06:44:48 PM »

Good info... tks.
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