Intel Linux DRM HDMI / DisplayPort Audio

[XabiX]

Sorry XabiX, my command was a little wrong.

Here, try this one:

# speaker-test -t sine -c 5

speaker-test 1.0.22

Playback device is default
Stream parameters are 48000Hz, S16_LE, 5 channels
Sine wave rate is 440.0000Hz
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 39 to 419430
Period size range from 12 to 139810
Using max buffer size 419428
Periods = 4
was set period_size = 104857
was set buffer_size = 419428
 0 - Front Left
 1 - Front Right
 2 - Rear Left
 3 - Rear Right
 4 - Centre
Time per period = 12.850245

I was running as root, but I'm not sure you have to. Change '-c X' to 5, 6, 7, channels, etc.

Thanks it works great. So I should be able to test True-HD file just to see if this is also working.

[JulianW]

I suppose maybe the article does refer to older, non-i3/i5 graphics. It's not clear from Michael's article. Michael, can you confirm why this is news?

Afaik:
currently, the intel driver _always_ sends audio to a connected HDMI device, even if it's not supported by that device. Some TVs/monitors don't like that.
With these patches, the driver first checks the EDID for audio support.