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Windows 7: Dell l502x (NVIDIA 540M) HDMI Audio issues (multiple devices)

12 Nov 2014   #1

Windows 7 Ultimate 64bit
Dell l502x (NVIDIA 540M) HDMI Audio issues (multiple devices)

I have been trying to use my (win7.x64) Dell l502x laptop with my folk's new samsung lcd tv.

I finally got the sound bit working (opening nvidia control panel refreshes the audio playback devices list), but I have several erroneous devices that appear (and disappear) when connecting the TV.

I tried the same device (TV) with the same cable, with my brother's new toshiba laptop, and there were two playback devices (as expected) - speakers, and TV.

Mine looks like this

Can any l502x owners confirm (re driver install) if they did follow these instructions


R300420 Video: (Do "Custom Install", Uncheck HD Audio) nVidia GeForce GT 435M, GeForce GT 420M, GeForce GT 445M, Stereoscopic 3D, GeForce GT 525M, N12E-GE-B(LP)-GT 550M, N12E-GE-B ( GT555M), GeForce GT 540M, v., A07 (155 MB)

willing to try anything to attempt to get this configured "properly".

also having issues with nvidia display driver crashing when external is connected, despite underclocking gpu as advised

My System SpecsSystem Spec
12 Nov 2014   #2

Windows 10 64 bit

I have multiple HDMI audio entries listed in the Sound Panel/Playback section. Mine are AMD HDMI audio as I have an AMD Radeon video card.

You have an NVIDIA video card so the reason for the NVIDA listings. The Toshiba may only have the basic Intel Video, for example, and the reason for only one entry.
My System SpecsSystem Spec
07 Jan 2015   #3

Windows 7 Ultimate 64bit

thanks for your contribution. With the AMD devices, are they all unplugged?

(These appear when Samsung TV is connected.
Ususally they disappear after disconnecting HDMI, lately they've been sticking a bit. Disappear about a minute after unplugging HDMI)

How can they be made use of if they're "not plugged in"?
I only have one HDMI port on my l502x
My System SpecsSystem Spec

07 Jan 2015   #4

Windows 10 64 bit

That is normal, unless you have an HDMI cable plugged into the PC.
My System SpecsSystem Spec

 Dell l502x (NVIDIA 540M) HDMI Audio issues (multiple devices)

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