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External monitor changes my PC settings

by sauna6 / January 29, 2009 8:58 PM PST

This is weird: after I use my TV or overhead video projector as an external monitor (successfully), my regular external monitor (LG L194WS) settings go bad. Only the mid part of the picture shows, while some 15% of both sides are black, covering parts of the picture, which is also a bit narrower than before. No amount of setting the ATI video card or Windows will help. Yesterday I had to go to a previous Restore point to fix this.
My laptop is a 4 years old Presario V2000, WXP SP3, 1G RAM, Turion 64, always up-to-date and clean.

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It happens
by Willy / January 29, 2009 10:19 PM PST

Be sure you have the latest ATI drivers r setup s/w.

While the setting can be correct for your original dual or ext. monitor setting these are not always "auto setting" when yet a different monitor is used. Basically, you've confused the system and can only fall back on the original setting. Also, having a 4yr. old laptop may compound the problem as when it was released the ATI video just became less capable as time marched on even with newer s/w patches/drivers.

tada -----Willy Happy

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something changes...
by sauna6 / January 30, 2009 8:43 AM PST
In reply to: It happens

Thanks, Willy - I have regularly updated all drivers using Driver Detective. Maybe that caused the problem, because it started appearing only some 6 months ago, shortly after I installed Driver Detective. .
What threw me off was the discovery that the *monitor-out* port is able to control my laptop's settings! Nothing is sacred anymore...

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De-install option
by Willy / January 30, 2009 9:45 AM PST
In reply to: something changes...

If Driver Detective is playing an active part its another layer to be dealt with. You don't return to the proper setting once off the ext. port. What you're left with is the ext. monitor setting being used(I suspect) for your laptop LCD or what it thinks it should be. Why not simply remove the Driver Detective s/w and be done with it. If possible, can you just de-install and return to the old laptop w/o pain. You should create a restore point before doing this as a safeguard.

tada -----Willy Happy

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