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ST3 Pro on a 4K monitor
#11
(2019-05-06, 03:49 PM)PMSchu Wrote: Hi Greg,

That's an excellent idea. What is the designation of this bug? EVGA makes the video card, but the GPU & video drivers come from Nvidia.

Is anyone else in SkyTools land using a 4K monitor with an Nvidia chipset video card? Do you experience this issue? I'd be happy to revert the drivers to an older version, if I knew which one would work correctly.

Since this is a recurring problem, do you recall what part of the SkyTools 3 display code is calling the buggy part of the video driver? I'd like to point the EVGA/Nvidia  folks to the appropriate problem area.

TIA, 

Phil S.

I'm using an EVGA GTX 1070, and we have another machine with an Nvidia chipset. Neither have a 4K monitor, but there aren't any problems when screen item scaling is invoked, and that's the core issue.

Tell them that the drawing of scaled metafiles is not being scaled properly when the screen item scaling is not 100%.

Thanks,
Greg
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#12
Thanks Greg,

My old monitor had 1680 x 1050 resolution & it worked fine with the new RTX 2070 video card at that resolution. The scaling factor was 100%. It's the 4K monitor that's causing the issues. At 4K the old screen just appears in the top left quadrant of the display & is too tiny to read. With the scale factor set to 100% ST3 Pro displays a nice sky simulation, but the info at the top & bottom are too small, like the screenshot that I posted earlier.

What version of the Nvidia drivers are you using? I'll contact EVGA with this issue.

Thanks again,

Phil S.
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#13
Hi Phil,

I hate to split hairs, but just for clarity, it isn't really about 4K. In my own experience and in the reports of others, it has always been about the scaling. It's just that 4K always requires scaling.
Clear skies,
Greg

SkyTools Developer
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#14
I'm using the very latest Nvidia driver via the EVGA website. The other machine used to have this problem but it was fixed a couple of years ago. We keep that driver up to date as well.
Clear skies,
Greg

SkyTools Developer
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#15
Hi Greg,

I'm clear that it's not the 4K monitor per se that causes the problem, but the scaling. However, since the 4K monitor needs some scaling to make text on the screen readable, it seems that those using a 4K monitor should experience this problem, nicht wahr? Does your GTX video card also use the 430.39 driver or do RTX & GTX video cards use different drivers? I think that the driver that I was using for my old GTX 760 video card worked with the new RTX card, but I did install a new driver soon after installing the RTX card. All was fine with the old 1680 x 1050 monitor.

I have an Nvidia app on my computer that alerts me when a new driver is available. It hasn't flagged a new driver in over a week, so I think 430.39 is the latest & greatest  Wink .

Thanks again,

Phil S.

P. S. How did T40 work for you the other night?
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#16
(2019-05-07, 04:30 PM)PMSchu Wrote: Hi Greg,

I'm clear that it's not the 4K monitor per se that causes the problem, but the scaling. However, since the 4K monitor needs some scaling to make text on the screen readable, it seems that those using a 4K monitor should experience this problem, nicht wahr? Does your GTX video card also use the 430.39 driver or do RTX & GTX video cards use different drivers? I think that the driver that I was using for my old GTX 760 video card worked with the new RTX card, but I did install a new driver soon after installing the RTX card. All was fine with the old 1680 x 1050 monitor.

I have an Nvidia app on my computer that alerts me when a new driver is available. It hasn't flagged a new driver in over a week, so I think 430.39 is the latest & greatest  Wink .

Thanks again,

Phil S.

P. S. How did T40 work for you the other night?

Anyone who needs to scale the text can see this problem (4K monitors are not the only case), but only if the driver has the bug in it. Many drivers work just fine.

I don't pretend to know what magic goes on with the Nvidia drivers... they seem to have unified drivers, but I think its really just a unified installer. And there seem to be different implementations for different manufacturers as well.

Haven't had a chance to try T40 yet. I've got a reservation late this month for calibration using a Landolt standard star field.
Clear skies,
Greg

SkyTools Developer
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