[Bug 103786] Display resolution (3840x2160/60HzDP audio does not work with Thinkpad Ultra Dock and DP-to-HDMI converter

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103786

Lakshmi <lakshminarayana.vudum at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|DP audio does not work with |Display resolution
                   |Thinkpad Ultra Dock and     |(3840x2160/60HzDP audio
                   |DP-to-HDMI converter        |does not work with Thinkpad
                   |                            |Ultra Dock and DP-to-HDMI
                   |                            |converter

--- Comment #47 from Lakshmi <lakshminarayana.vudum at intel.com> ---
(In reply to Jan Hoffmann from comment #46)
> (In reply to Lakshmi from comment #43)
> > 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 comment #43)
> > 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?

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