I have a Thinkpad Helix 2 (2nd. gen) with Ultrabook Pro Keyboard. There is a mini-DisplayPort output on the keyboard part, but I don't get any output from it. (The keyboard can be detached from the Helix/tablet part.) I tested it with two different miniDP-to-HDMI converter. (The converters worked with a W540 notebook.)
I don't get any changes in xrandr output, or in dmesg when I connect or disconnect the cables. I don't see any DisplayPort in xrandr output. The eDP1 is the internal screen.
I read here that, the miniDP output shows as HDMI2, but if I connect the miniDP-HDMI converter, the HDMI2 is in "disconnected" state also.
- cpu: Intel(R) Processor 5Y10 CPU @ 0.80GHz (Core M-5Y10, Intel® HD Graphics 5300)
- os: Debian GNU/Linux 8.8 (jessie) with jessie-backport
- kernel: 4.9.30-2~bpo8+1 x86_64
- xserver-xorg-video-intel: 2:2.99.917+git20161206-1~bpo8+1
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 260mm x 140mm
1360x768 59.80 59.96
800x600 60.32 56.25
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
$ ls -l /sys/class/drm/
card0 -> ../../devices/pci0000:00/0000:00:02.0/drm/card0
card0-eDP-1 -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1
card0-HDMI-A-1 -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-1
card0-HDMI-A-2 -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-2
controlD64 -> ../../devices/pci0000:00/0000:00:02.0/drm/controlD64
renderD128 -> ../../devices/pci0000:00/0000:00:02.0/drm/renderD128
Do you have any idea why it is not working or what can I do?
Thank you, for your help.