I just got a Princeton VL1917 Monitor and hooked it up to the DVI on
the ATI 9600 card and the computer would not power up. Removed the DVI
cable hooked the monitor up with the analog cord and all worked fine.
Hooked the dvi cable back up after removing the analog cable and
looked fine. Powered down the computer and tried to restart it and was
dead. Again removed the DVI cord. Hooked up the monitor analog and
the computer fired up fine. So has anyone else run into this . I
don't know if it the monitor or the ATI card or the Princeton monitor.
Is there much difference between DVI and Analog. Any ideas would be
nice as what to check.





Even tired with the monitor shut off same difference. Seems as soon
as the DVI cable hooked up it stops the computer from powering up
after windows shut down. Noticed one time the green power led on the
front of the computer was flashing on and off. Only way then to reset
it is to pull the ac plug on the computer for a few minutes. Then go
back to the analog cable. Even after power up analog then carefull
switching over to DVI checked the voltages on the power supply using
ASUS probe and can see no difference between when hooked up analog or
DVI once the computer is running. . It is so funny because one you
power up and switch the cable over to DVI it works ok ?????

In article <(E-Mail Removed)>, David Wells
<(E-Mail Removed)> wrote:

> I just got a Princeton VL1917 Monitor and hooked it up to the DVI on
> the ATI 9600 card and the computer would not power up. Removed the DVI
> cable hooked the monitor up with the analog cord and all worked fine.
> Hooked the dvi cable back up after removing the analog cable and
> looked fine. Powered down the computer and tried to restart it and was
> dead. Again removed the DVI cord. Hooked up the monitor analog and
> the computer fired up fine. So has anyone else run into this . I
> don't know if it the monitor or the ATI card or the Princeton monitor.
> Is there much difference between DVI and Analog. Any ideas would be
> nice as what to check.
>
> Even tired with the monitor shut off same difference. Seems as soon
> as the DVI cable hooked up it stops the computer from powering up
> after windows shut down. Noticed one time the green power led on the
> front of the computer was flashing on and off. Only way then to reset
> it is to pull the ac plug on the computer for a few minutes. Then go
> back to the analog cable. Even after power up analog then carefull
> switching over to DVI checked the voltages on the power supply using
> ASUS probe and can see no difference between when hooked up analog or
> DVI once the computer is running. . It is so funny because one you
> power up and switch the cable over to DVI it works ok ?????

Looking at the pinout of DVI-D, it does have a +5V connection.
Perhaps this is overloading your +5VSB ? Take the side panel
off the computer, and observe the green +5VSB powered motherboard
LED, and see if it stays lit when the DVI-D is plugged in and the
computer is sleeping/off. I doubt that +5 on the monitor cable
carries significant power, so maybe there is a short somewhere.

http://web.archive.org/web/200402150...sfordvi-d.html

Pin Function Pin Function

1 T.M.D.S. Data2- 13 T.M.D.S. Data3+
2 T.M.D.S. Data2+ 14 +5V Power
3 T.M.D.S. Data2/4 Shield 15 Ground (for +5V)
4 T.M.D.S. Data4- 16 Hot Plug Detect
5 T.M.D.S. Data4+ 17 T.M.D.S. Data0-
6 DDC Clock 18 T.M.D.S. Data0+
7 DDC Data 19 T.M.D.S. Data0/5 Shield
8 Not Connected 20 T.M.D.S. Data5-
9 T.M.D.S. Data1- 21 T.M.D.S. Data5+
10 T.M.D.S. Data1+ 22 T.M.D.S. Clock Shield
11 T.M.D.S Data1/3 Shield 23 T.M.D.S. Clock+
12 T.M.D.S. Data3- 24 T.M.D.S. Clock-

Looking into the 3x8 connector pins, something like this:

D2- D2+ GND D4- D4+ DDC_CLK DDC_DATA N/C
D1- D1+ GND D3- D3+ +5V GND5 Detect
D0- D0+ GND D5- D5+ GND CLK+ CLK-

VGA connector pinouts:
http://web.archive.org/web/200403211...utsforvga.html

Pin Function

1 Red
2 Green
3 Blue
4 Not Connected
5 Ground (Analog)/Self Test
6 Red Return (Ground)
7 Green Return (Ground)
8 Blue Return (Ground)
9 +5V
10 Digital Ground/Sync Return
11 Digital Ground
12 SDA (DDC Data)
13 Horizontal Sync
14 Vertical Sync
15 SCL (DDC Clock)

So, it has a connection to +5V as well ? Both
connectors have DDC_CLK and DDC_DATA, which is how
the computer can read out the model number of the
display. (DDC is a serial Philips I2C bus.)

Any bent pins ?

Paul

On Fri, 25 Mar 2005 15:12:24 -0500, (E-Mail Removed) (Paul) wrote:

>In article <(E-Mail Removed)>, David Wells
><(E-Mail Removed)> wrote:
>
>> I just got a Princeton VL1917 Monitor and hooked it up to the DVI on
>> the ATI 9600 card and the computer would not power up. Removed the DVI
>> cable hooked the monitor up with the analog cord and all worked fine.
>> Hooked the dvi cable back up after removing the analog cable and
>> looked fine. Powered down the computer and tried to restart it and was
>> dead. Again removed the DVI cord. Hooked up the monitor analog and
>> the computer fired up fine. So has anyone else run into this . I
>> don't know if it the monitor or the ATI card or the Princeton monitor.
>> Is there much difference between DVI and Analog. Any ideas would be
>> nice as what to check.
>>
>> Even tired with the monitor shut off same difference. Seems as soon
>> as the DVI cable hooked up it stops the computer from powering up
>> after windows shut down. Noticed one time the green power led on the
>> front of the computer was flashing on and off. Only way then to reset
>> it is to pull the ac plug on the computer for a few minutes. Then go
>> back to the analog cable. Even after power up analog then carefull
>> switching over to DVI checked the voltages on the power supply using
>> ASUS probe and can see no difference between when hooked up analog or
>> DVI once the computer is running. . It is so funny because one you
>> power up and switch the cable over to DVI it works ok ?????
>
>Looking at the pinout of DVI-D, it does have a +5V connection.
>Perhaps this is overloading your +5VSB ? Take the side panel
>off the computer, and observe the green +5VSB powered motherboard
>LED, and see if it stays lit when the DVI-D is plugged in and the
>computer is sleeping/off. I doubt that +5 on the monitor cable
>carries significant power, so maybe there is a short somewhere.
>
>http://web.archive.org/web/200402150...sfordvi-d.html
>
>Pin Function Pin Function
>
> 1 T.M.D.S. Data2- 13 T.M.D.S. Data3+
> 2 T.M.D.S. Data2+ 14 +5V Power
> 3 T.M.D.S. Data2/4 Shield 15 Ground (for +5V)
> 4 T.M.D.S. Data4- 16 Hot Plug Detect
> 5 T.M.D.S. Data4+ 17 T.M.D.S. Data0-
> 6 DDC Clock 18 T.M.D.S. Data0+
> 7 DDC Data 19 T.M.D.S. Data0/5 Shield
> 8 Not Connected 20 T.M.D.S. Data5-
> 9 T.M.D.S. Data1- 21 T.M.D.S. Data5+
>10 T.M.D.S. Data1+ 22 T.M.D.S. Clock Shield
>11 T.M.D.S Data1/3 Shield 23 T.M.D.S. Clock+
>12 T.M.D.S. Data3- 24 T.M.D.S. Clock-
>
>Looking into the 3x8 connector pins, something like this:
>
> D2- D2+ GND D4- D4+ DDC_CLK DDC_DATA N/C
> D1- D1+ GND D3- D3+ +5V GND5 Detect
> D0- D0+ GND D5- D5+ GND CLK+ CLK-
>
>VGA connector pinouts:
>http://web.archive.org/web/200403211...utsforvga.html
>
>Pin Function
>
>1 Red
>2 Green
>3 Blue
>4 Not Connected
>5 Ground (Analog)/Self Test
>6 Red Return (Ground)
>7 Green Return (Ground)
>8 Blue Return (Ground)
>9 +5V
>10 Digital Ground/Sync Return
>11 Digital Ground
>12 SDA (DDC Data)
>13 Horizontal Sync
>14 Vertical Sync
>15 SCL (DDC Clock)
>
>So, it has a connection to +5V as well ? Both
>connectors have DDC_CLK and DDC_DATA, which is how
>the computer can read out the model number of the
>display. (DDC is a serial Philips I2C bus.)
>
>Any bent pins ?
>
> Paul


Opened the case and the green led on the mother board is on fine.
Plugged the DVI cord on and the led still on fine. Pushed the power
switch on the front of the case and just nothing. No fan just dead.
Removed the DVI cord reinstalled the analog cord set up. Had to pull
the ac plug for a few seconds to get what ever is getting upset by
trying to use the DVI output and the computer powered up just fine.
Even reset the ATI 9600 card no help. Soon as the DVI cable hooked up
it is game over. It is so funny as I say if I power up using the
analog connection then carefully switch over to the DVI connection it
is fine till after I shut down Windows then the computer just refuses
to start no fan nothing.

On Fri, 25 Mar 2005 15:12:24 -0500, (E-Mail Removed) (Paul) wrote:

>In article <(E-Mail Removed)>, David Wells
><(E-Mail Removed)> wrote:
>
>> I just got a Princeton VL1917 Monitor and hooked it up to the DVI on
>> the ATI 9600 card and the computer would not power up. Removed the DVI
>> cable hooked the monitor up with the analog cord and all worked fine.
>> Hooked the dvi cable back up after removing the analog cable and
>> looked fine. Powered down the computer and tried to restart it and was
>> dead. Again removed the DVI cord. Hooked up the monitor analog and
>> the computer fired up fine. So has anyone else run into this . I
>> don't know if it the monitor or the ATI card or the Princeton monitor.
>> Is there much difference between DVI and Analog. Any ideas would be
>> nice as what to check.
>>
>> Even tired with the monitor shut off same difference. Seems as soon
>> as the DVI cable hooked up it stops the computer from powering up
>> after windows shut down. Noticed one time the green power led on the
>> front of the computer was flashing on and off. Only way then to reset
>> it is to pull the ac plug on the computer for a few minutes. Then go
>> back to the analog cable. Even after power up analog then carefull
>> switching over to DVI checked the voltages on the power supply using
>> ASUS probe and can see no difference between when hooked up analog or
>> DVI once the computer is running. . It is so funny because one you
>> power up and switch the cable over to DVI it works ok ?????
>
>Looking at the pinout of DVI-D, it does have a +5V connection.
>Perhaps this is overloading your +5VSB ? Take the side panel
>off the computer, and observe the green +5VSB powered motherboard
>LED, and see if it stays lit when the DVI-D is plugged in and the
>computer is sleeping/off. I doubt that +5 on the monitor cable
>carries significant power, so maybe there is a short somewhere.
>
>http://web.archive.org/web/200402150...sfordvi-d.html
>
>Pin Function Pin Function
>
> 1 T.M.D.S. Data2- 13 T.M.D.S. Data3+
> 2 T.M.D.S. Data2+ 14 +5V Power
> 3 T.M.D.S. Data2/4 Shield 15 Ground (for +5V)
> 4 T.M.D.S. Data4- 16 Hot Plug Detect
> 5 T.M.D.S. Data4+ 17 T.M.D.S. Data0-
> 6 DDC Clock 18 T.M.D.S. Data0+
> 7 DDC Data 19 T.M.D.S. Data0/5 Shield
> 8 Not Connected 20 T.M.D.S. Data5-
> 9 T.M.D.S. Data1- 21 T.M.D.S. Data5+
>10 T.M.D.S. Data1+ 22 T.M.D.S. Clock Shield
>11 T.M.D.S Data1/3 Shield 23 T.M.D.S. Clock+
>12 T.M.D.S. Data3- 24 T.M.D.S. Clock-
>
>Looking into the 3x8 connector pins, something like this:
>
> D2- D2+ GND D4- D4+ DDC_CLK DDC_DATA N/C
> D1- D1+ GND D3- D3+ +5V GND5 Detect
> D0- D0+ GND D5- D5+ GND CLK+ CLK-
>
>VGA connector pinouts:
>http://web.archive.org/web/200403211...utsforvga.html
>
>Pin Function
>
>1 Red
>2 Green
>3 Blue
>4 Not Connected
>5 Ground (Analog)/Self Test
>6 Red Return (Ground)
>7 Green Return (Ground)
>8 Blue Return (Ground)
>9 +5V
>10 Digital Ground/Sync Return
>11 Digital Ground
>12 SDA (DDC Data)
>13 Horizontal Sync
>14 Vertical Sync
>15 SCL (DDC Clock)
>
>So, it has a connection to +5V as well ? Both
>connectors have DDC_CLK and DDC_DATA, which is how
>the computer can read out the model number of the
>display. (DDC is a serial Philips I2C bus.)
>
>Any bent pins ?
>
> Paul
Looked at the cable see no bentr pins either end. Thanks again for
your answer. Mine you I hooked up the monitor to the DVI after
powering it up and then put back on the analog and to my eyes can't
see any difference. Mind you I started with a Commodore 64 so at 63
my eyes may not notice a little difference.

Paul


Just a bit more info after reading your post. I hooked up the
Princeton Monitor to the DVI cable then shut down but before I tried
to boot up again I shut the Princeton monitor off by pulling the AC
cord on the Monitor power back. The computer then start fine with dvi
cord on etc and then I just power up the monitor. So when the monitor
must be putting out some voltage that up sets my system if you power
up the monitor before starting up the computer.



So for now till someone can tell me what pin to open in the dvi cable
so that what ever my monitor is outputting that upsetting my computer
will use the analog setting.

David, what power supply do you have?

On Fri, 25 Mar 2005 21:49:31 GMT, David Wells wrote:

> Paul
>
>
> Just a bit more info after reading your post. I hooked up the
> Princeton Monitor to the DVI cable then shut down but before I tried
> to boot up again I shut the Princeton monitor off by pulling the AC
> cord on the Monitor power back. The computer then start fine with dvi
> cord on etc and then I just power up the monitor. So when the monitor
> must be putting out some voltage that up sets my system if you power
> up the monitor before starting up the computer.
>
>
>
> So for now till someone can tell me what pin to open in the dvi cable
> so that what ever my monitor is outputting that upsetting my computer
> will use the analog setting.

In article <(E-Mail Removed)>, David Wells
<(E-Mail Removed)> wrote:

> Paul
>
>
> Just a bit more info after reading your post. I hooked up the
> Princeton Monitor to the DVI cable then shut down but before I tried
> to boot up again I shut the Princeton monitor off by pulling the AC
> cord on the Monitor power back. The computer then start fine with dvi
> cord on etc and then I just power up the monitor. So when the monitor
> must be putting out some voltage that up sets my system if you power
> up the monitor before starting up the computer.
>
>
>
> So for now till someone can tell me what pin to open in the dvi cable
> so that what ever my monitor is outputting that upsetting my computer
> will use the analog setting.

OK, that is the "monitor leakage problem". I do not recollect a
solution to the problem, but it has happened with other Asus
boards.

It could be related to the DDC I2C bus, or to that +5V signal.
It is unlikely to be the other high speed data signals.

A theory at the time was, that whatever "leaks" down the monitor
cable, prevents the motherboard from detecting it is completely
powered down. When you press the button, _something_ thinks
no event should be generated to the motherboard, and hence it
won't post.

Now, since the DDC stuff should be the same on both the DVI-D
and the VGA connectors, it is hard to understand why the symptoms
are different.

Another of life's mysteries...

Paul

On Fri, 25 Mar 2005 20:05:10 -0500, (E-Mail Removed) (Paul) wrote:

>In article <(E-Mail Removed)>, David Wells
><(E-Mail Removed)> wrote:
>
>> Paul
>>
>>
>> Just a bit more info after reading your post. I hooked up the
>> Princeton Monitor to the DVI cable then shut down but before I tried
>> to boot up again I shut the Princeton monitor off by pulling the AC
>> cord on the Monitor power back. The computer then start fine with dvi
>> cord on etc and then I just power up the monitor. So when the monitor
>> must be putting out some voltage that up sets my system if you power
>> up the monitor before starting up the computer.
>>
>>
>>
>> So for now till someone can tell me what pin to open in the dvi cable
>> so that what ever my monitor is outputting that upsetting my computer
>> will use the analog setting.
>
>OK, that is the "monitor leakage problem". I do not recollect a
>solution to the problem, but it has happened with other Asus
>boards.
>
>It could be related to the DDC I2C bus, or to that +5V signal.
>It is unlikely to be the other high speed data signals.
>
>A theory at the time was, that whatever "leaks" down the monitor
>cable, prevents the motherboard from detecting it is completely
>powered down. When you press the button, _something_ thinks
>no event should be generated to the motherboard, and hence it
>won't post.
>
>Now, since the DDC stuff should be the same on both the DVI-D
>and the VGA connectors, it is hard to understand why the symptoms
>are different.
>
>Another of life's mysteries...
>
> Paul
So I can take it that if I want to use the DVI connection to the
monitor just remember to power the monitor up after starting the
computer and it should no cause any damage to the Asus Board.

Again thank you for the help.

David Wells

On Sat, 26 Mar 2005 00:00:33 GMT, signmeuptoo
<(E-Mail Removed)> wrote:

>David, what power supply do you have?
>
>On Fri, 25 Mar 2005 21:49:31 GMT, David Wells wrote:
>
>> Paul
>>
>>
>> Just a bit more info after reading your post. I hooked up the
>> Princeton Monitor to the DVI cable then shut down but before I tried
>> to boot up again I shut the Princeton monitor off by pulling the AC
>> cord on the Monitor power back. The computer then start fine with dvi
>> cord on etc and then I just power up the monitor. So when the monitor
>> must be putting out some voltage that up sets my system if you power
>> up the monitor before starting up the computer.
>>
>>
>>
>> So for now till someone can tell me what pin to open in the dvi cable
>> so that what ever my monitor is outputting that upsetting my computer
>> will use the analog setting.


The power supply is a Sparkle power int ltd Switching Power Supply 400
watt.

In article <(E-Mail Removed)>, David Wells
<(E-Mail Removed)> wrote:

> So I can take it that if I want to use the DVI connection to the
> monitor just remember to power the monitor up after starting the
> computer and it should no cause any damage to the Asus Board.
>
> Again thank you for the help.
>
> David Wells

I don't remember any mention of the motherboard being
damaged by the leakage problem. Since your VGA cable works,
stick with that - that sounds like the best workaround.

Paul