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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Intel HD 520 failed to train DP when connected with a external monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93578#c20">Comment # 20</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Intel HD 520 failed to train DP when connected with a external monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93578">bug 93578</a>
from <span class="vcard"><a class="email" href="mailto:lesiehnie@web.de" title="lesiehnie@web.de">lesiehnie@web.de</a>
</span></b>
<pre>I can confirm this issue using the same hardware (Dell XPS 13 9350, Dell DA200)
as already mentioned here.
Similar issues occur using the Dell WD15 Thunderbolt dock. While other
interfaces (e.g. ethernet) are working, xrandr gives the unreliable output and
the HDMI port is not working having the same issues as discussed here.</pre>
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