I use TV 32" with 1920x1080 and cintiq 13" with 1920x1080

when I boot my PC the resolution is fine but DPI is wrong.

In smaller monitor It's look like DPI is higher than the bigger one.

I already set dpi to be the same (smallest 100%) but it's not work until I do something to change display setting.

It's really annoy me. This problem is not happen when I use windows 8

Only solution I found is turn off "Turn on fast start-up".

When I do that It's boot like what I want. every monitor is the same DPI.

But it'll make my boot time longer.

It should be just start up windows and use the same dpi from the start.

So I think this problem is a bug in windows 8.1

Best regards

• Moved by Marvin_Guo Tuesday, March 10, 2015 1:57 AM Win8.1 related

Thank you for reply.

I've already used the latest graphic card driver. But It's won't help this issue.

In registry editor. I check those variables then value of them is already set like that blog suggest.

So , it look like when windows start-up(with fast start-up) It use something like suggest value for different monitor size instead of what I set in control panel. But when I turn off fast start-up windows use my setting value.

And I think there are a lot of people who got the same problem as me.

Here is an example.

http://answers.microsoft.com/en-us/windows/forum/windows8_1-desktop/windows-81-forgets-dpi-display-size-settings-for/385cb615-d699-47f8-8c12-717e3364c866