Re: [alsa-devel] [PATCH 0/3] Make HDMI ELD usable with hotplug

On 02/18/2013 02:35 PM, Takashi Iwai wrote:

At Mon, 18 Feb 2013 14:11:10 +0100, David Henningsson wrote:

...

I'm experimenting with using ELD information in PulseAudio and found that it didn't work very well with hotplugging. Neither the proc file nor the ELD kcontrol was cleared correctly after unplug, and there was no way (except polling) to find out when ELD has become available.

Did you try Xingchao's patch for drm/i915? It's queued in drm-intel-next:

 commit 7b9f35a6dd72f89452c58bbdbaf063027bf857ec
 Author: Wang Xingchao <xingchao.wang@intel.com>
 Date:   Tue Jan 22 23:25:25 2013 +0800

 drm/i915: HDMI/DP - ELD info refresh support for Haswell

Thanks for the hint. I'm currently developing not on a Haswell machine, but an (I think) Arrandale that I bought a few years ago. So I guess this patch does not have any effect on my hw?