[Bug 88124] i915: regression: after DP connected (via docking station) monitor is turned off, when turned on, it does not work anymore

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88124

--- Comment #31 from Manasi <manasi.d.navare at intel.com> ---
It looks to me that in the DP MST case, the userspace driver is not handling
the short pulses for MST sideband communication properly.
So the connector (now different id) does not get detected as Connected and
modeset doesn't happen on this.
Now, that we know it only happens in the docking station case and works fine on
a single DP connection (DP SST), Could you capture a log with DP connected
through the docking station on the latest kernel?

Regards
Manasi

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