[agl-discussions] UP2 board DP connection?

Takashi Matsuzawa tmatsuzawa at xevo.com
Fri Feb 16 00:40:21 UTC 2018


By the way, the following method of knowing output display names works?

>$ journalctl |grep Output

I Tried this on my UP2 board with master snapshot and ee 5.0.1 but could not get HDMI-A-1 from it.

Looking into weston.log in /run/..., I can see HDMI-A-1 name.
Will I see two Output names if I connect two displays to this board and everything works well?

________________________________________
From: Takashi Matsuzawa
Sent: Thursday, February 15, 2018 2:48 PM
To: automotive-discussions at lists.linuxfoundation.org
Subject: UP2 board DP connection?

Hello.

I am playing with my UP2 board, connecting two displays to the board, one to HDMI port and another to DP (not eDP) port.
(The board has HDMI/DP stacked socket).

I can see only HDMI port is working, and DP is not.
(After power-on, BIOS screen and after are only displayed on the display attached to HDMI port).

Is there how-to information of the either or both of below?

- Use DP as my display (connect my display to DP, boot my board and see BIOS and after are displayed on the display).

- Enable both HDMI and DP displays (connect two displayes to HDMI port and DP port, and let the system recognize that I have two displayes attached to the board).

I looked into the BIOS setting menus, but I am not sure if I have options for this there.

Any comment or suggestion is appreciated.


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