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