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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>
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<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - DP 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;">Status</td>
<td>NEW
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<td>NEEDINFO
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - DP audio does not work with Thinkpad Ultra Dock and DP-to-HDMI converter"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103786#c43">Comment # 43</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - DP 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#c42">comment #42</a>)
<span class="quote">> I tested with another adapter, the CAC-1080 (which apparently uses a
> MCDP2900 converter chip). With this adapter, audio works fine.
>
> However, with the CAC-1080, 4K video at 60 Hz only works reliably on the
> laptop DP port. When connected through the MST hub in the docking station,
> the highest stable setting seems to be 3840x2160 at 23.98 Hz. Anything
> higher results in the display showing nothing or a broken picture (sound can
> sometimes be heard though).
>
> Similar to the CAC-1070, everything works without issues on Windows.
>
> So both adapters work fine on the internal DP port, but fail in different
> ways when connected via the docking station.</span >
Thanks for the feedback.
So with CAC-1080, audio works fine (which is the original issue)? At the moment
display is not working as expected via docking station. Did I understood
correctly?
Can you verify the issue with latest drmtip and attach the logs?</pre>
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