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Changing Monitor's Refresh Rate Produces Anomaly


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8 replies to this topic

#1 Damaru

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Posted 11 January 2008 - 08:06 AM

Changing my CRT monitor's refresh rate from 60Hz to 70Hz produces a shifted desktop image (i.e., the desktop image is no longer centered on the screen), and changing it from 60Hz to 75Hz produces a `postcard-sized' image of my desktop with a plain blue border. Because the options for the higher refresh rates are available under Advanced Display Properties, I'm guessing my system can handle them...in theory. Any helpful hints?

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#2 nigglesnush85

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Posted 11 January 2008 - 08:20 AM

Hello,

There should be an option there that says hide modes my device can't display. select this and the ones that are left you should be able to use,
Try setting the desktop background to stretch and try altering the resolution settings, note the settings first so you can revert back if you need to.
Regards,

Alan.

#3 Damaru

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Posted 11 January 2008 - 09:17 AM

Hi nigglesnush85,

Thanks a lot for your response...

Yep, that option is ticked and I still have 70Hz and 75Hz available as options in the drop-down list...

I'm pretty sure that the plain blue border isn't due to my wallpaper settings as the taskbar, desktop icons, visible windows, and sidebars are all in perfect scale with the wallpaper image.

When the `postcard' version of my desktop first popped up I thought about using the manual controls on my monitor to zoom it up to full size but decided against it as I'd never heard of this being necessary.

I'm used to having `weird' problems that are peculiar to me and my system...guess this is another one to add to the list.

Thanks for trying! :thumbsup:

Damaru

Edited by Damaru, 11 January 2008 - 09:27 AM.


#4 hamluis

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Posted 11 January 2008 - 09:50 AM

Did you try rebooting after the change ?

Louis

#5 nigglesnush85

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Posted 11 January 2008 - 02:08 PM

Also it could be down to the drivers, what graphics chip does the system have?
Regards,

Alan.

#6 Damaru

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Posted 12 January 2008 - 02:06 AM

Hi Louis,

No I didn't...I see the note there on the General tab saying some programs will not work properly without a restart, but (as is often the case), the phraseology was a little too ambiguous for me to feel confident in my interpretation... E.g., it wasn't clear to me whether the note applied to changes made from ANY tab of the Advanced Display Properties dialogue, or only to changes made from the tab where the note occurs. Also, I wasn't sure if changing the refresh rate of my monitor really qualified as a "program" or not... When I can't puzzle something out, I tend to err on the side of caution. :thumbsup:

If you think it would be safe to try rebooting after I get the display anomaly, I will give it a go.

Nigglesnush85,

Hmm, would this be `S3 Graphics ProSavageDDR'? This is listed as a `Display Adapter' in Belarc Advisor's system readout and is the name of the only component listed under System Information > Components > Display on my computer.

Thanks for the tips, guys!

Edited by Damaru, 12 January 2008 - 02:07 AM.


#7 hamluis

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Posted 12 January 2008 - 07:42 PM

It can never hurt to reboot after making system changes of any sort (which are completed).

...and the video drivers could be corrupt. The projected cure would be to uninstall those (using Device Manager) and then install the same drivers or an updated version.

Update Those Drivers - http://www.cyberwalker.net/columns/aug00/310800.html

Louis

#8 Damaru

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Posted 16 January 2008 - 08:11 AM

Hi Louis,

Thanks for that excellent link! :thumbsup:

A reboot after changing my monitor's refresh rate and getting the display anomaly didn't solve the problem, so I'm guessing (based on the advice offered in this thread) that it's the drivers.

Should be a snap to get them updated once I have a few spare minutes to spend on a minor computer project.

Best regards,

Damaru

Edited by Damaru, 16 January 2008 - 08:25 PM.


#9 hamluis

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Posted 16 January 2008 - 11:23 AM

Give us some feedback after you try the drivers...

Louis




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