T460 minidisplay port not working Ubuntu 16.04, same cable / same projector it works with Windows

[pippo]

DistroRelease: Ubuntu 16.04.3 LTS
Kernel 4.10.0-40-generic #44~16.04.1-Ubuntu
xserver-xorg-core-hwe-16.04 2:1.19.3-1ubuntu1~16.04.4 amd64 Xorg X server - core server

lspci -k | grep -iA2 "VGA"
00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 07)
    Subsystem: Lenovo Skylake Integrated Graphics
    Kernel driver in use: i915

sudo lshw -C video
  *-display
       description: VGA compatible controller
       product: Sky Lake Integrated Graphics
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 07
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:124 memory:e0000000-e0ffffff memory:c0000000-dfffffff ioport:e000(size=64)

with HDMI port works same projector:

xrandr -q
Screen 0: minimum 320 x 200, current 2944 x 1080, maximum 8192 x 8192
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
   1920x1080 60.02*+ 59.93 48.00
   1680x1050 59.95 59.88
   1600x1024 60.17
   1400x1050 59.98
   1280x1024 60.02
   1440x900 59.89
   1280x960 60.00
   1360x768 59.80 59.96
   1152x864 60.00
   1024x768 60.04 60.00
   960x720 60.00
   928x696 60.05
   896x672 60.01
   960x600 60.00
   960x540 59.99
   800x600 60.00 60.32 56.25
   840x525 60.01 59.88
   800x512 60.17
   700x525 59.98
   640x512 60.02
   720x450 59.89
   640x480 60.00 59.94
   680x384 59.80 59.96
   576x432 60.06
   512x384 60.00
   400x300 60.32 56.34
   320x240 60.05
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-2 connected 1024x768+1920+0 (normal left inverted right x axis y axis) 1218mm x 914mm
   1024x768 60.00*+
   1920x1080 60.00 50.00 59.94
   1920x1080i 60.00 50.00 59.94
   1400x1050 59.95
   1280x1024 60.02
   1280x960 60.00
   1280x800 59.81
   1280x768 59.87
   1280x720 60.00 50.00 59.94
   800x600 60.32
   720x576 50.00
   720x480 60.00 59.94
   640x480 60.00 59.94

It doesn't look that it has Nvidia card, on Windows it doesn't show Nvidia anywhere.

the minidisplay port works on Ubuntu with a normal screen but not with Projector.
the minidisplay port works on Windows with a normal screen and with Projector.
the HDMI port works on Ubuntu with a normal screen and with Projector.
the HDMI port works on Windows with a normal screen and with Projector.

[penalvch (penalvch)]

Claudio, thank you for reporting this and helping make Ubuntu better.

Could you please run the following command once from a terminal by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information:
apport-collect 1733982

When reporting xorg related bugs in the future, please do so via the above method. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Launchpad Janitor (janitor)]

[Expired for xorg (Ubuntu) because there has been no activity for 60 days.]