linux-kernel - Re: Lenovo Dock + Thinkpad X260 -> no HDMI audio output

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Message-ID: <20161117025050.namubp3tzsg2ipbk@burischnitzel.preining.info>
Date:   Thu, 17 Nov 2016 11:50:50 +0900
From:   Norbert Preining <preining@...ic.at>
To:     Sebastian Reichel <sre@...nel.org>
Cc:     linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: Lenovo Dock + Thinkpad X260 -> no HDMI audio output

Hi Sebastian,

> Lenovo Dock Ultra contains a DP-MST Hub to provide all those
> HDMI/DVI/DP ports. Audio over DP-MST is currently not supported
> by the i915 driver, but there are patches (developed since ~2014):
> 
> https://lists.freedesktop.org/archives/intel-gfx/2016-November/111353.html

Thanks a lot. I have tried out the patch including possible fixes for the
monitor disconnect issues mentioned in the freedesktop bug, but it does
not fix the problem of the disappearing external monitor.

Well, that means no audio-out for now, unfortunately. I will have to live
without that.

Thanks

Norbert

--
PREINING Norbert + TeX Live & Debian Developer + http://www.preining.info
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