Comment 29 for bug 1104230

Hi Dariusz,

I think I have this part:
Manufacturer Part# : XX6F0 | Dell Part# : 331-6307
I am not sure if that is a DP hub, it is beyond my knowledge.
I used your kernel and the xserver-xorg-video intel driver from URI was:
http://ppa.launchpad.net/pool/main/x/xserver-xorg-video-intel/xserver-xorg-video-intel_2.99.916+git20141016.6b98f162-0ubuntu0sarvatt~trusty_amd64.changelog
How does the xorg-edgers repo provide a driver?
I don't see it, while the repo is enabled.
When I had a fully working situation the last time, I did not see any
xserver-xorg-video-intel driver installed.
Is it another driver or package you are referring to?

Kind regards,
Vincent

On Mon, Oct 20, 2014 at 4:48 PM, Dariusz Gadomski <
<email address hidden>> wrote:

> Hi Vincent,
>
> If I understand correctly your docking station performs the role of a dp
> mst hub (can you please confirm this with the documentation of your
> docking station or provide its model to verify this online?), so it
> should be a good setup to test.
>
> Ideally to make this working you would need 2 things:
> 1. Patched kernel (I am hoping the one from my ppa is sufficient)
> 2. MST-aware intel driver (available from the xorg-edgers repository).
>
> Can you please confirm that both conditions are satisfied in your test
> case?
>
> Thanks,
> Dariusz
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1104230
>
> Title:
> DisplayPort 1.2 MST support is missing in the Intel driver
>
> Status in X.org xf86-video-intel:
> Unknown
> Status in “xserver-xorg-video-intel” package in Ubuntu:
> Confirmed
>
> Bug description:
> I have two recent DisplayPort monitors, both supporting the 1.2
> version of the standard and one containing an MST hub (DELL 2913WM).
>
> I have an Intel Haswell based NUC connected over mini-displayport to
> the display containing the hub, then the second display is plugged in
> that one over DisplayPort.
>
> DisplayPort 1.2 is enabled on the display containing the hub and the
> second display lights up fine but just works as a clone of the first
> display, without ever showing up in xrandr, dmesg or any other useful
> logs I could find.
>
> My understanding of MST is that the second display should show up as
> DP2 on my laptop so I can configure it as I would any other display.
>
> UPDATE: Updated the bug report after it was pointed out that the
> original test hardware, a Lenovo x230 isn't DP 1.2 capable. The same
> test on hardware also fails, due to missing support for MST in the
> driver.
>
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>
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>