HD Graphics 2500 does not recognize the speakers of the TV

[Hsait7]

Hi everybody

I want to receive the advice to the problem

I have a DELL Optiplex 9010 Intel(R) HD Graphics 2500 and Windows 7 64bit SP1.

Via a Displayport to HDMI adapter from the PC, and are connected to the TV with speakers.

in this state, Windows7 does not detect speakers

Control Panel - Hardware and Sound - Manage audio devices - Sound Playback

TV's speaker does not appear.Therefore, I have not been able to output sound from the TV

However, when I started in Ubuntu 12.10 Live DVD this PC, I'm be able to output the sound.

And I have a another PC, DELL Latitude E5520 Intel (R) HD Graphics 3000 and Windows7 64bit SP1. This PC has an HDMI terminal, I have been able to output sound to the TV in this PC

Optiplex 9010 and Latitude E5520, Raw EDID data is visible the same value in Intel(R) Graphics / Media Control Panel.

In fact, HDMI cable length is long.....

HDMI cables are (1)10m + (2)5m + (3)3m, using HDMI to HDMI adapter

When I replace the 3m to 10m cable (1), Optiplex 9010 Windows7 64bit SP1 recognize speakers and I'm be able to output the sound.

- cable may be too long ?

- Intel driver problem ? -- Difference of Intel drivers for Windows and Ubuntu ?- Problem of Windows 7 ?- PC is reading EDID that supports audio, Windows 7 does not recognize Why ?

Thanks everyone

[Allan_J_Intel1]

I understand you have been experiencing issues with audio through TV speakers.

Based on the description, it does not appear to be an issue with graphics controller or the graphics driver because you mentioned this is working when you replaced the cable.

When you load the latest video drivers (Intel) it loads HDMI codec, in fact, the configuration for audio output is set through different ways, and this is through Windows Sound control panel or using the software that comes with your integrated sound card.

Allan.

[Hsait7]

Thank you for your reply

I have applied the latest driver (Win64_15338)However, there was no changeI think cable is too long. but, I have a layout constraints, I must in this way...If I shorten the cable(1: 10m->3m), the problem does not occur.So, I think also that there is no problem with the Intel driver.

However, the cable is long(1: 10m), the problem does not occur in Ubuntu

Therefore, I do not think also that there is a problem with the cable length.because under the same conditions (PC, Cables, Adapters, TV), there is a difference in the Ubuntu and Windows.As a minimum requirement, which appears as a Sound Playback Device, I think that the audio support is shown in the EDID.is there any other conditions ?

thanks

[Allan_J_Intel1]

Graphics driver engine cannot be compared with linux drivers. They are not the same and it may be that there is a limitation about cable length when using Windows drivers.

Allan.

[Hsait7]

In this cable layout, it seems there is only the following method, as a way I can take

- change the PC

- add a graphics board Because, other PC is working

thank you for your support