[Bug 71267] sna: (Haswell) X-server freezes when enabling DP at docking station

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71267

Jan Henning <herr.jth at googlemail.com> changed:

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                 CC|                            |herr.jth at googlemail.com

--- Comment #107 from Jan Henning <herr.jth at googlemail.com> ---
I have exactly the same issue on Ubuntu 14.04 with an T440s which makes its
display connection via the docking stations Display Port.

After I patched the Kernel with Stefan Agners link-train-delay.patch and now it
works reasonably well, the time it takes to make the display connection for me
is about 10 seconds at max, which is acceptable for me.

However, I don't think this solution is perfect, so I added a few dollars to
the bounty and hope some working patch makes it upstream.

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