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Windows 7: 59Hz

11 Jan 2009   #11
johngalt

 

OK, Both o you - use Guru3D - Driver Sweeper from Safe Mode to remove the alpha drivers and let Windows 7 use the WDDM drivers and *then* see if it helps. Also, don't use the nVidia control panel, use the Desktop settings (now called Screen Resolution in the Desktop context menu) to make the adjustment and see if they stick.


My System SpecsSystem Spec
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11 Jan 2009   #12
Zodduska

Windows 7 64bit Beta
 
 

Actually I first noticed it right after the vanilla Beta 7 install, before I had any third party drivers added. I always run driver sweeper in safe mode in between Nvidia drivers.

When I use the Windows CP it looks like it applied when i click apply, but after I hit OK I go back in to check and its back at 59Hz. Nvidia Control panel instantly switches back to 59Hz when I click apply. I've even tried having both control panels open side by side with the setting to see if one was interfering with the other and I tried to apply them both simultanously but this didn't work either.
My System SpecsSystem Spec
11 Jan 2009   #13
johngalt

 

Hmmm. That is weird, then.

In Device manager, everything looks fine?

If so, then lets look at the Screen resolution and see if Windows offers it as a screen resolution when we look in the advanced settings - Go to the monitor tab and uncheck Hide modes that this monitor cannot display, then reboot and see what modes are available - try one you know will not work, and let windows black out the screen - then hit escape (or wait the 15 seconds it waits for acceptance) and you'll be back at the old resolution and sync rate. Now, go back to advanced options and check the hide modes it cannot display, then reboot again. Finally, try applying 60.

If this does not help, I am not sure *why* it is doing this - unless you're using HDMI as opposed to DVI?

In fact, can you verify what type of connector you *are* using - just want to make sure it is not DVI-A....
My System SpecsSystem Spec
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11 Jan 2009   #14
Zodduska

Windows 7 64bit Beta
 
 

I just tried removing the driver like you said and dirver sweeper, Windows 7 installed the Nvidia prerelease WDDM 1.1 driver and I have the same problem.

I am using the DVI to HDMI cable that came with my monitor to connect, this screen doesn't have a DVI input.

Everything looks fine in Device Manager, I'll try your suggestion to test the "hide unsupported modes" now.
My System SpecsSystem Spec
11 Jan 2009   #15
johngalt

 

Go ahead - but I am betting even money that the adapter is the root cause of the problems.

I bet it *tries* to set the refresh rate - and never receives feedback from the monitor and thus leaves it at 59 Hz....
My System SpecsSystem Spec
11 Jan 2009   #16
Zodduska

Windows 7 64bit Beta
 
 

Ok, once I rebooted after unchecking "hide unsupported" the only options were 59 and 60Hz as usual.

You could be right that it might be something to do with the connection, I've had some other issues specific to that in the past. Kinda sucks though since it works fine in Vista.
My System SpecsSystem Spec
11 Jan 2009   #17
johngalt

 

See, I think it may be that in W7 it is actually *checking* the hardware and communicating with it better than Vista ever did - which communicated better than XP...etc., etc., ad nauseum.

It cannot be the adapter as HDMI will not work over DVI-A anyway, only DVI-I and DVI-D....check your video card specs and see if there is something special you have to do to enable HDMI output from those DVI connectors (I don't think there is, but ....)
My System SpecsSystem Spec
12 Jan 2009   #18
Zodduska

Windows 7 64bit Beta
 
 

By default with the newer Nvidia drivers the GTX 280 actually outputs a HDMI signal, and my monitor's OSD confirms this. This causes trouble setting the scaling settings in Nvidia's control panel (the options are greyed out but driver scaling is forced on, I like to be able to disable it) because the driver thinks its connected to a TV, so I use a registry tweak to force it to use my monitors EDID and output in DVI mode instead. 59Hz issue is persistent between both HDMI and DVI output modes sadly.
My System SpecsSystem Spec
12 Jan 2009   #19
johngalt

 

Wait, reg tweak? Ummm....can you post that? I wonder if the reg tweak itself is forcing the 59....
My System SpecsSystem Spec
12 Jan 2009   #20
Zodduska

Windows 7 64bit Beta
 
 

Nah, cause I remove the tweak each time before I install a new driver so I test both modes, HDMI before adding the tweak and DVI after are both stuck in 59Hz desktop.

For this tweak you need to get the right key location because it's random for each driver install and the EDID of your monitor for it to have any effect, here's mine:

Quote:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Video\{E748DE3C-59C2-4888-AB32-B283C1F6A2DB}\0000]
"OverrideEdidFlags0"=hex:22,64,0B,19,00,00,FF,FF,04,00,00,00,7E,01,00
here is some more info about it and how to come up with one:
http://forums.extremeoverclocking.co...d.php?t=310242
My System SpecsSystem Spec
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