<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - DP audio does not work with Thinkpad Ultra Dock and DP-to-HDMI converter" href="https://bugs.freedesktop.org/show_bug.cgi?id=103786#c42">Comment # 42</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - 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 <a class="email" href="mailto:jan@3e8.eu" title="Jan Hoffmann <jan@3e8.eu>"> Jan Hoffmann</a> <pre>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.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>