Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Refresh rate limited when 2 monitors are running?

08 Dec 2011   #1
ytrebil

Win 7 Pro 64bit
 
 
Refresh rate limited when 2 monitors are running?

I have HDMI (plasma) and DVI (monitor) out on my Radeon HD graphics card. I also run duplicate monitor mode in Windows.

However, for whatever reason, Windows 7 limits my refresh rate at 29hz. If I disable the plasma (only show desktop on monitor 1) I can run at 60hz. Also in CCC I can force the Plasma to run at 60hz.

How comes Windows when in my desktop on my monitor limits the refresh rate at 29hz?

This is used as a HTPC so both outputs need to be active so I have to run duplicate monitors.

Is this a Windows 7 fault?


My System SpecsSystem Spec
.
08 Dec 2011   #2
Dave Atkin

Windows 7 Ultimate x64
 
 

I think its more likely to be a limitation of your Graphics Card. If you have two monitors with high resolution then it may have trouble refreshing them both at the normal 75/60hz.


Dave
My System SpecsSystem Spec
08 Dec 2011   #3
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

Quote:
However, for whatever reason, Windows 7 limits my refresh rate at 29hz.
No, your TV is limiting the refresh rate to 29 Hz. That would be because you are running in duplicate/clone mode, which will run both displays at the highest supported resolution/refresh rate of whichever display has the lowest numbers. It also isn't a card limitation as the card is seeing it as a TV and running it at the resolution/refresh rate that the TV says it supports. Check your TV's settings and see if it can be set to computer when connected to the computer via HDMI.

You want to be able to configure each display independently you need to run them in extended mode.

Quote:
I have to run duplicate monitors.
Unless you have to or need to mirror what is on both displays, run them in extended mode and just open your media player on the TV (or open it on the monitor and drag it to the TV.
My System SpecsSystem Spec
.

08 Dec 2011   #4
ytrebil

Win 7 Pro 64bit
 
 

Okay thanks, it does have Computer Mode so I will check that out – I’ll also try Extended Desktop although I have a feeling that it will be a bit of a pain having WMC opening up on just the TV without having to drag it across.


Is there a way to set it so that when WMC opens it ALWAYS opens on my HDTV as a maximised window?
My System SpecsSystem Spec
08 Dec 2011   #5
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

After dragging it to the TV, it should open there on its own the next time you open it.
My System SpecsSystem Spec
08 Dec 2011   #6
ytrebil

Win 7 Pro 64bit
 
 

Thanks man - I'll have a play tonight.... and then I might try and do this ha ha. Sorry, poor joke. Anyway, yeah I'll give it a go tonight and make this as solved when/if it works.
My System SpecsSystem Spec
08 Dec 2011   #7
Dave Atkin

Windows 7 Ultimate x64
 
 

LOL! Good luck.
My System SpecsSystem Spec
08 Dec 2011   #8
ytrebil

Win 7 Pro 64bit
 
 

Thanks a lot - this works.

However, is it possible to lock to mouse to the different displays? When I'm using this (surfing etc) I am not using my HDTV and the mouse often goes off the side when I'm closing windows down ha. I know it's a little trivial but is there such a feature?

Thank you again.
My System SpecsSystem Spec
08 Dec 2011   #9
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

Only way I know of is to use something like Ultramon,

UltraMon Features - Other features

which does have that feature in it. Not free but has quite a few options/features for a multi monitor set up.

One thing you can do is to open the Windows display settings (right click the deaktop and select Screen Resolution), and assuming that the TV is the one on the right, drag it so that it is on the left side of the monitor (or left to right). That will stop the mouse from drifting off the right side of the monitor, just makes it that you have to remember that if you want to do anything on the TV you will have to move the mouse left off of the monitor.
My System SpecsSystem Spec
08 Dec 2011   #10
ytrebil

Win 7 Pro 64bit
 
 

Thanks!!
My System SpecsSystem Spec
Reply

 Refresh rate limited when 2 monitors are running?




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
High Refresh Rate LCD/LED Monitors For Gaming
Ever since I retired my huge CRT monitor, I have been very unsatisfied with the performance of my 75Hz maximum LED monitor. Don't get me wrong, it's great for movies and everyday use, but for gaming it has done nothing but leave me yearning for something with a higher refresh rate. I see that...
Graphic Cards
Higher refresh rate?
Is there a way for me to get a higher refresh rate on my monitor other than the 60 hz I now have? I've attached a screenshot, showing that there's no other option (in the pulldown menu) other than 60 hz. But, is there somehow a way for me to CONFIGURE a higher refresh rate other than 60? ...
Graphic Cards
Changing My Refresh Rate. Can anyone help please!
Hey guys! I am brand new and this is my first post on the site. I am also not extremely knowlwdgable about computers. I have a OS of Windows 7 Home Premium 64 bit with 3GB of memory. I hope this is sufficent. When I am on a web page reading an article, after a certain amount of time the...
Browsers & Mail
Refresh rate won't go above 59hz
I have a 8800 GTS running with an HP LP2275w monitor. I just installed win7 and for some reason it won't let the refresh rate go above 59hz. My monitor is capable of running 60hz. This may not seem like a big deal to some, but I actually find it quite disorienting. When I change the video settings...
Graphic Cards
What is refresh rate?
Hi there, I noticed that there was an option to create a new custom resolution on which had 60 Refresh rate , and i could make it higher. What is it? and also, what is Allocation size? When i format , the default is 4096. Thanks, Alex.
General Discussion
How can I force my refresh rate ?
Hi there, I'm using a Samsung Syncmaster 550v, with a resolution of 1024x768 60hz, fact is, that refresh rate is killing my eyes, I have read several times that this monitor supports 75hz at that resolution (even this is undocumented). problems is, i can't force refresh rate to 75hz, as that...
Graphic Cards


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 18:08.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App