The purpose of this exercise is to drive a monitor that is mounted above the bed
Ah, ok. How long is the cable you're using?
There is nothing wrong with the monitor or cable, as we can plug our ancient laptop directly into it without any faffing whatsoever.
What res do you drive the monitor at with the old laptop?
I'm assuming this HAS to be a Windows XP problem, as the picture only disappears when XP starts.
The fact you're seeing the login screen briefly, at full res, suggests to me that it's not a software or driver issue. I actually think that you might be pushing the tolerance of the monitor by sending a high resolution over a long cable, possibly from a laptop using less power to drive the VGA in the first place. Lots of factors, y'see.
As a test, would it be possible to connect the laptop temporarily with a much shorter cable and see how it fairs driving the monitor? Alternativly, since you're cloning, drive both screens at a lower res and see if you see the same problem.
My reasoning is, since you *can* run in safe mode with a cloned screen, it's the resolution you're trying to achieve which is causing you problems. Due to the wonderful vagueries of analog video signalling over VGA cables your new laptop and the new resolution might just be too much for the monitor to cope with, taking into account the impedance over the long cable run to get to the ceiling.
This is all guesswork, but then troubleshooting remotely is tricky for this kind of thing. Let me know how it goes. :)
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timeasmymeasure
no subject
Date: 2005-08-25 07:24 am (UTC)Ah, ok. How long is the cable you're using?
What res do you drive the monitor at with the old laptop?
The fact you're seeing the login screen briefly, at full res, suggests to me that it's not a software or driver issue. I actually think that you might be pushing the tolerance of the monitor by sending a high resolution over a long cable, possibly from a laptop using less power to drive the VGA in the first place. Lots of factors, y'see.
As a test, would it be possible to connect the laptop temporarily with a much shorter cable and see how it fairs driving the monitor? Alternativly, since you're cloning, drive both screens at a lower res and see if you see the same problem.
My reasoning is, since you *can* run in safe mode with a cloned screen, it's the resolution you're trying to achieve which is causing you problems. Due to the wonderful vagueries of analog video signalling over VGA cables your new laptop and the new resolution might just be too much for the monitor to cope with, taking into account the impedance over the long cable run to get to the ceiling.
This is all guesswork, but then troubleshooting remotely is tricky for this kind of thing. Let me know how it goes. :)