Re: [Intel-gfx] DP link training and performance issues with HDMI USB-C dongle and Skylake

On Thu, 23 Jun 2016, Andy Lutomirski luto@amacapital.net wrote:

I have a Dell XPS 13 9350 (Skylake) and a Dell DA200 adapter. The latter is a Thunderbolt device that includes an HDMI port and connects over USB Type C. I believe that it's internally using DP Alternate Mode.

I don't know whether this is a hardware issue, an Alpine Ridge firmware issue (mine is out of date because it appears to be impossible to update it on Linux for now), or an i915 driver issue.

At least a driver issue. The support is not there yet. Bug at [1].

BR, Jani.

[1] https://bugs.freedesktop.org/show_bug.cgi?id=93578