e7440 Latitude / Dell Dock Fails to detect extra Display ports
Bug #1686333 reported by
Rostislav
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| xserver-xorg-video-intel (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
Bug Description
e7440 Latitude / Dell Dock
Description: Ubuntu 16.04.2 LTS
Release: 16.04
xserver-
The docking station maps DP1 port of the laptop to two outputs at the back panel mirroring the picture.
Earlier (in 14.04) it used to be two separate outputs DP2 and DP3, which could not work at the same time with eDP(laptop screen) or DP1(laptop's port).
The problem is very similar to described here:
https:/
Revision history for this message
| Rostislav (rostislav-kouznetsov) wrote | #1 |
Revision history for this message
| Rostislav (rostislav-kouznetsov) wrote | #2 |
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e7440 Latitude has two CRTCs (some piece of hardware, needed one per screen), so only two screens can work at a time. Not a bug.