Hello everyone! I’m a developer for EarTrumpet, a well-known audio mixer application for Windows. We’ve been notified that our app seems to be interfering with NVIDIA Optimus’ display mode switching. You can find more details on this GitHub issue . When NVIDIA switches from integrated to discrete gr…

@MarkusHoHo Is this something you can help with or route to the appropriate team?

Hi @withinrafael and welcome to the NVIDIA developer forums. I cannot help right away beside asking what kind of Graphics interaction you do to render your app. Essentially what is blocking here is the WDM telling the graphics driver there is an app that uses resources that it cannot re-allocate to…

Hello @withinrafael , is it possible that you are using Direct3D 9 in your app? I am told that that can cause the displaymode switch to be blocked since then it is interpreted as an offending app.

Hey @MarkusHoHo , I’ll double check but I’m pretty sure we explicitly put the app into software rendering to pull the app away from the GPU. It doesn’t show in the NVIDIA GPU monitoring app at least. But one user had an idea–could this also perhaps happen if we’re somehow still attached to the HDMI …

Hi again, [image] withinrafael: But one user had an idea–could this also perhaps happen if we’re somehow still attached to the HDMI audio device(s) exposed by the GPU? This could very well be one reason, yes. I checked the internal tracking bug for this and there were some changes in flight…

Hi @withinrafael , it has been a while, but as per my latest information your app should not cause any issue anymore with the latest v555 drivers. Cheers!

Why is our app showing in the NVIDIA Optimus "Applications blocking display mode change" dialog?

Gaming and Visualization Technologies General Topics & Other SDKs Drivers - Linux, Windows, MacOS

withinrafael March 2, 2024, 7:52pm 6

Hey @MarkusHoHo, just checking in on this.

Topic		Replies	Views
Advanced Optimus Not Working With Nvidia App General Topics & Other SDKs	4	3390	December 14, 2024
Intermittent Nvidia failures using Optimus Manager+bbswitch (Manjaro) Linux	1	747	January 30, 2022
Quadro 1000M Optimus Linux: in Optimus mode, LVDS is disconnected Linux	7	1431	September 28, 2019
Blank video with NVIDA Optimus enabled machines when using DirectShow with VMR9 DirectX, DXR, DirectCompute	0	501	March 11, 2019
NvOptimusEnablement is not working in our OpenGL application General Topics & Other SDKs	5	6009	July 29, 2016
Nvidia Optimus and Windows Desktop Duplication General Topics & Other SDKs	0	1595	November 27, 2015
The first call to IDXGIOutput::GetDisplayModeList after monitor hotplug freezes the system Drivers - Linux, Windows, MacOS	0	106	June 29, 2024
External monitor not working Nvidia Optimus Linux	9	2515	June 16, 2022
Problems with hybrid NVidia RTX 3070 in Linux Linux	19	3058	October 1, 2022
How to make Nvidia overlay not to hook on my DirectX application which is not a game? General Topics & Other SDKs	0	941	April 4, 2018

Why is our app showing in the NVIDIA Optimus "Applications blocking display mode change" dialog?

Related topics