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<body><span class="vcard"><a class="email" href="mailto:lakshminarayana.vudum@intel.com" title="Lakshmi <lakshminarayana.vudum@intel.com>"> <span class="fn">Lakshmi</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - Display resolution (3840x2160/60HzDP audio does not work with Thinkpad Ultra Dock and DP-to-HDMI converter"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103786">bug 103786</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Summary</td>
<td>DP audio does not work with Thinkpad Ultra Dock and DP-to-HDMI converter
</td>
<td>Display resolution (3840x2160/60HzDP audio does not work with Thinkpad Ultra Dock and DP-to-HDMI converter
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Display resolution (3840x2160/60HzDP audio does not work with Thinkpad Ultra Dock and DP-to-HDMI converter"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103786#c47">Comment # 47</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Display resolution (3840x2160/60HzDP audio does not work with Thinkpad Ultra Dock and DP-to-HDMI converter"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103786">bug 103786</a>
from <span class="vcard"><a class="email" href="mailto:lakshminarayana.vudum@intel.com" title="Lakshmi <lakshminarayana.vudum@intel.com>"> <span class="fn">Lakshmi</span></a>
</span></b>
<pre>(In reply to Jan Hoffmann from <a href="show_bug.cgi?id=103786#c46">comment #46</a>)
<span class="quote">> (In reply to Lakshmi from <a href="show_bug.cgi?id=103786#c43">comment #43</a>)
> > So with CAC-1080, audio works fine (which is the original issue)?
>
> Yes. Logs are attached (for CAC-1080 connected to docking station, at
> 1920x1080/60Hz resolution).
>
>
> (In reply to Lakshmi from <a href="show_bug.cgi?id=103786#c43">comment #43</a>)
> > At the moment display is not working as expected via docking station.
> > Did I understood correctly?
>
> With the CAC-1080, high resolutions (3840x2160/60Hz) do not work via docking
> station. The symptoms seem to me like there is some problem with signal
> quality. (The display switches between "no signal" and a black screen with
> strange detected resolution like 3840x2159 or 1920x2160. Sometimes a broken
> picture shows briefly, sound can often be heard shortly.)
>
> I am not sure if it is possible these issues are related (i.e. weak signal
> causing different problems), or if should I open a separate bug for the
> video issue?</span ></pre>
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